FSE

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A commission for :iconadamnemo42: and by far the longest story I've written so far! I'm really happy with the way this one turned out...

If you like my stuff, consider buying me a Ko-Fi.The more I drink, the less I sleep. The less I sleep, the more I write!

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Sitting in her room with the door locked to prevent any interruptions, Allison read, or to be more precise, re-read the book that had been the focus of her attention for the past week. Not that she expected interruptions – her dad's company had sent him to a trade-expo abroad for a few days, her mother was at her friend's next door having coffee, and her twin brother was glued to the gaming console in the living room, which meant the teen would finally have a chance to get some work done.

Well, as far as she was concerned, it was work, possibly even Work. To everyone around her it seemed to be a Goth girl's quirky hobby. Nobody considered that an eighteen-year-old would actually believe in magic. It had always been an interest for Allison, but in the past four years or so it had become the subject of intense study.

Her first tentative steps had been in Wicca and new-age shamanism, and she'd actually found an older girl in her town named Hellen who was a practicing Wiccan and willing to teach her about it. That soon proved to be a disappointment, since Hellen's idea of witchcraft seemed to be smoking pot and spouting generic hippie-spiritual rhetoric while wearing so much 'occult' silver jewelry she actually chimed. Her lack of dedication was the main reason Ally abandoned that particular path. The second reason was that she was pretty sure Hellen was trying to get into her pants.

She then turned to the study of eastern disciplines, which at first seemed more promising. The literature was more concise, and the focus seemed to be on diligent and patient work, something that appealed to Allison. She was certain that if magic was a craft, than it made sense that it would take hard work for someone to become proficient in it.

And while Yoga and various forms of meditation did help her learn how to focus, she realized all of these disciplines were a path to attaining some sort of harmony, to aligning oneself with the universe. The young girl could see some appeal in that, but what really interested her was a way to project her will onto reality, rather than learn how to better conform to it.

Which led her to late-nineteenth and early-twentieth century European esotericism and her current field of study. There was plenty of published material on the subject, but Allison was disappointed when she realized they were essentially treatises outlining the principles of the system and lacked the practical component. She surmised the idea was to awaken an interest in a potential student who would then seek out a temple to be inducted and receive instruction.

Ally's big breakthrough came when she spotted a seller on eBay who'd bought out a failed used book store somewhere in Britain and was selling off the old stock. Most of the more conventional literature was sold off in lots and priced to move, but a few volumes were auctioned separately on the chance they might catch the eye of a collector. Fortunately for her, the 'Occult Manuscript, Author Unknown' generated little interest, and she was able to get it for a song.

After an agonizing wait the book finally arrived from overseas and Alisson buried her face in it the second it was unwrapped. The tome itself was hardly a conventional grimoire – it was a sensible and sturdy leather-bound notebook, its lined pages filled with neat script and the occasional diagram. It was the contents that convinced the teen that she'd finally struck gold, or to be more precise, the Hermetic Order of the Golden Dawn.

The book was a journal kept by one of the members, possibly even Third Order, detailing their personal studies and experiments. Allisson had pored over its contents, looking up various references until she was certain she had a firm grasp of the rituals described within it. And tonight she was going to enact one!

She had chosen a specific rite, one that would allow her to alter and strengthen the attributes of both her character and her physical form. If she succeeded, it should make further study easier, and allow her to make certain self-improvements. Allison had always been a bit shy, although when she started high school she'd managed to rebrand her shyness into a certain aloof persona. Probably one of the reasons she was spending her Friday evening casting spells rather than getting ready for a night on the town. Well, one of the reasons.

Ally was generally happy about her body. She had a pretty face, long dark hair, and a slim figure. She was quite a pretty girl, but now that she was an adult she was a bit miffed that she didn't look like a pretty woman. So if this spell could help address the issue, she didn't see any harm in trying. After all, all she needed was a little filling out here and there, and it seemed only fair since most of her friends now had their here-s and dare-s out to here.

With that in mind she double-checked the lock before taking all of her clothes off, lighting a single candle and sitting down on a cushion with the book open in front of her. The ritual she had in mind was autosexual and clothes would only get in the way. Clearing her mind, she opened the book to a page that had an illustration of the Tree of Life pasted onto it, with a trail marked out along the intricate lines connecting the ten sephiroth. Taking deep breaths she pointed to the first one with one hand, while the other slid between her legs and along her smooth lips. As she touched herself she intoned the first words of power, conjuring in her mind the change she wanted to effect.

Strength. That was something she felt she needed to focus on, not wishing to become socially adept at the price of her individuality. No, a strong-willed woman who didn't crave the company of others, but felt perfectly comfortable in it. Somebody who radiated self-confidence, profound when silent and charming when not.

And as long as we're building confidence… she thought as she slipped one finger inside her slit, her mind taking a more corporeal turn. A little bit of muscle tone, the physical aspect of strength complementing the mental one. And in order to create an image of more… feminine strength, she envisioned her perky breasts getting fuller, heavier while still riding high on her chest. A little more definition in the hips, something that would sway a little and turn her plain gait into a sexy saunter. And she'll just round that area of with… well, just some extra roundness. Firm, but with a hint of bounce.

Not wanting to get to vain, Alison focused more on the intended character as she moved her finger and progressed along the path of the ritual. She was thrilled that so far it seemed to be working, the room around her seeming to fade away until she felt like nothing around the circle of candlelight existed. She did her best to keep focused, being mindful of the intonations and keeping herself stimulated.

Wild. The word popped into her head and seemed to fit perfectly into the image she was crafting. After all, what was the point of confidence if you lived by someone else's rules and were afraid to take risks? It would be a wild strength, someone who ran naked under the night sky and howled at the moon! She wasn't sure where that image came from, but it seemed to have a certain power to it so she allowed it to take root in her vision.

Allison did her best to maintain focus while at the same time vigorously marshaling her sexual energies, her fingers dancing in and out of her moist folds. The key, she knew, would be to time her release to coincide with the final stage of the ritual. Her stimulated young body seemed to supply the next component of her image of its own accord – sexuality. The new persona she was creating would be a romantic soul, but fiercely sexual, pursuing physical passion with an almost feral intensity.

The word 'feral' clicked in place nicely, bringing to mind once again the full moon in a starry sky, and the piercing howl raised up in salute to it. She amended her image with slightly elongated, pointed incisors. The small flaw complimented the feral theme she was pursuing, and added a little depth and character to the image. A slight change to the bone structure, to give the face a predatory streak. Her long, straight hair would become wavy, more tousled looking, its color now a glossy black, maybe with a streak or two of white running through it.

As the ritual progressed along the prescribed path, her vision shifted until she was looking out the eyes of the persona she had created. The candle's flame became the silvery light of a full moon, and she was no longer sitting, but running through the night on the balls of her feet, chasing it as it made its way across the night sky. No, she wasn't chasing after the Moon, she was chasing after a mate! Like a bitch in heat, she was seeking a male to climb on top of her back and quench the fire in her loins.

She forced her eyes to focus on the book she knew lay on the floor in front of her. Her vision shifted back to reality, more or less, the image of the Tree of Life once again in full view, although the candle still seemed to cast the silvery glow of a full moon. It took all of Allison's strength to focus on the final stages of the ritual, since the heat she felt in her vision hadn't left her, the fingers now pumping furiously in and out of her teen pussy only seeming to fan the flames.

Allison was aware her breathing was now labored, that she was panting as if she really had ran underneath a night sky, even though she knew for a fact she hadn't moved since she started. Her nostrils seemed to be flaring and it occurred to her she was sniffing the air, trying to catch the scent of a male. As she traced out the path of the spell with one hand, she brought the other to her face. She could smell her own arousal in a way that she never thought possible, and on instinct she slid the digits past her lips, sucking her own honey off her fingers. She moaned around the fingers, the taste of her arousal being tantalizingly close to something her body was craving.

Once she cleaned it, her hand flew back to between her legs, even those few seconds without stimulation feeling more frustrating than the teen could take. As she reached the last sephiroth she intoned the final words of power through gritted teeth, ending in a high-pitched whine as her pussy clenched around her fingers, her concentration finally dissolving under the force of her climax. The sensation was more powerful than anything Allison had ever felt, like a massive wave that swept her from her room and back into that world she'd glimpsed briefly, the one filled with wild scents and silvery moonlight.

The place seemed even more surreal now, her brain still afloat in a sea of orgasmic bliss. But despite her ecstasy, that heat was still there, the one thing her mind could still clearly focus on. She became aware that she was no longer looking through the eyes of a conjured vision, but that she had become that entity – strong, wild and passionate. But frustratingly empty! Her nostrils flared as she swept her head from side to side, some instinct telling her to rely on smell rather than vision.

And just like that she caught it – the scent of a male, of her mate! Muscles bunched without a thought to guide them and a second later she was streaking through the grass, crouched low as she moved faster than she ever thought possible. Her hearing that seemed so sharp a second ago now conveyed only the thudding of her heart and the sound of panting as she took in as much air as she could, her entire body seeming invested in the run, instead of just her legs. The rush of the wind against her felt strange, almost like every hair on her body was standing on end. Fatigue started to mix in with the need coming from her loins and the still lingering sensation of her climax, but she kept running, putting every ounce of strength she had to work. She was going so fast now that the wind was stinging her eyes, and she closed them tightly for a second to let them moisten.

And once she opened them she was looking at the candle again, this time from the floor. She'd never left her room, but she had collapsed and was panting like a dog as her mind slowly started to clear. The phantom-run had drained her strength more than a real one would have, and Allison found herself clumsily struggling just to get up. And once she did, she didn't seem to get very far. She felt the floor under her hands and feet, and figured she'd only managed to get on all fours, since the candle seemed to be only about three feet beneath her.

She tried to get her body to straighten out and stand up but it seemed to refuse, her feet and hands still pressed against the carpet. It was then that it occurred to her that of she was on all fours she should be feeling the carpet against her knees rather than her feet. It was then that she looked down. She'd just gotten her breath back, but that one glance took it away, and she was once again panting, only this time it was panic rather than exhaustion.

She'd seen slim, muscular limbs covered in black and white fur supporting her, wide paws planted firmly on the floor. She saw very little of her body looking down, but once she looked back, she got quite an eyeful. The black fur gleamed under the candlelight, while the white almost shined, all of it covering a long, muscled body ending with a tail that was currently tucked between her legs.

A shaky whine filled the room, and Allison was still surprised once she realized it had come out of her mouth. She ran what was now quite a sizable tongue around inside her mouth, noting the significant change in topography, especially when it came to her teeth! The panic rattling around in her brain had turned to disbelief and shock as she realized what had happened to her.

No, what I had done!

That thought, strangely enough, calmed her down like a splash of cold water on her face. She wasn't a victim of an accident, she'd managed to do the seemingly impossible and change her physical form! She had found a true path to power so fantastic most people doubted its existence! True, it hadn't gone quite the way she planned. She was strong, wild and, now that the panic was dying down, definitely sexual. It's just that her concentration must have wavered a bit and she overshot the figurative 'wild' and went closer to feral.

The point was, if she could do this, she could turn herself back the way she was, or, better yet the way she was trying to be. It just might take a little extra effort. She looked down at the book, and the image that had been pretty clear before was now slightly blurry. Deciding she might need more light, Alison made her way towards the switch. She found that walking wasn't as difficult now that she knew what sort of body she was in. She padded around the room, giving the candle a wide berth now that she was covered in fur. Burning hair smelled bad enough when she had a human nose, she certainly didn't want to find out how much it stinks with a canine one.

She hunched down in front of the switch, and after a little wriggling hopped up, landing with her paws against the wall. She seemed to be pretty big considering how high she managed to stretch, and after one smack with a paw she managed to turn the lights on. She went back to the book, but to her dismay it was still very hard to focus on the illustration. Deciding it was time to see what her effort had gotten her, she made her way to the closet. After a little bit of fiddling, she managed to get the door open and stood in front of the full-length mirror on the other side.

Jack London eat your heart out! she thought as she caught sight of her new body. As canines go, she was quite a big one, her head standing about three feet from the ground. She looked kinda like a malamute, although her fur seemed sleeker and thinner, no doubt the reason she wasn't a panting, overheated mess right about now. It was mostly starkly contrasting black and white, although in this light she could see bits of grey here and there.

Her body looked lean and powerful, her tail bushy and raised now that she'd calmed down. And surveying it from various angles she couldn't get over how cute her face looked, white furred and framed in black, with a long, delicate muzzle and big expressive eyes she couldn't help but notice were still the same shade of brown they were when she was human. The sight canine body reminded her of Bailey, the family German shepherd, who'd passed away two years ago. She noted that the thought of her old dog and the bitter-sweet memories of him had made her tail lower slightly and the tips of her ears flop down.

Turning her mind back to the problem at hand, she realized she wouldn't be able to perform the ritual again if these eyes couldn't focus enough. That, and the spell had required the use of two hands. While she supposed a claw could replace a finger to trace the path of power, provided she could see it, she doubted claws would do the trick down… no, back there. She'd need help, and there was only one person available. One look at the door knob told her it would have been hard enough to open even if she hadn't locked it. So she took a deep breath and called out her brother's name, not surprised in the least when it came out as a bark…

*******

The bark was loud enough that Shawn heard it over the sounds of the game he was playing. His first thought was that somebody's dog had wondered into their yard. The next two, however, made it clear it was coming from upstairs. Putting the game on pause he made his way up the stairs, checking each room for a furry intruder. When he got near his sister's room he heard another bark, clearly coming from inside.

“Ally, do you have a dog in there?" he asked, knocking on the door.

After Bailey passed on, they had a family talk about getting another dog, but decided not to since the two of them would likely be moving out to college soon, anyway. Allison had been fine with that, but if she had a change of heart, Shawn wouldn't put it past her to go to a shelter and just pick a dog up. It certainly sounded like that's what she did. Since there was no response aside from some more enthusiastic barking, Shawn tried the door, only to find it was locked.

“Ally, I don't know what you're up to, but I'm getting the emergency key!" he shouted, giving her fair warning. He ran down stairs, and after a quick rummage in the nightstand drawer, retrieved the key that would open all the interior locks in the house.

Allison liked her brother, but she also liked her privacy, so she'd been pretty specific about the sorts of scenarios which would justify him using The Key on her lock. And while she'd never stipulated a 'shape-shifted myself and am unable to work the lock' scenario, she was glad he was taking the initiative.

“Ally, don't get pissed, but this sounds like an emergency so I'm coming in!" he announced, knowing he'd be in trouble from his sister if it wasn't. Like, if she was just listening to music on her headphones and didn't hear the barking or him, he'd better have a story about a mad dash to save her from a rabid wolf ready. “Best of intentions and all tha-“ he stopped in mid-sentence when he realized the wolf in his scenario was fairly close to the mark. Fortunately, the huge canine seemed happy to see him, wagging its tail as it let out a satisfied murring sound now that it had someone's attention.

“Whoa! Easy there, boy!" he said, confronted by one of the biggest dogs he'd ever seen. The black and white canine's ears dropped slightly as it let out a sound that was somewhere between a mewl and a growl.

Oh come on! I'm totally feminine!

“Sorry, girl!" Shawn corrected himself after noticing a lack of boy parts hanging between the canine's rear legs. He extended his hand to let her sniff it, hoping it would improve her disposition.

Seriously? Ally thought as she looked at the offered appendage. It brought to mind unpleasant childhood memories of her brother when he'd first learned the 'pull my finger' bit. The friction between the two had kept escalating until Allison had had enough and grabbed her twin's finger, agreeing to let it go only once he'd sworn in front of both their parent's never to ask for it to be pulled again.

So I'm supposed to just sniff your hand and conclude that you're a well-meaning and trustworthy individual? She thought sarcastically, but nevertheless found herself taking a few tentative sniffs. The scent seemed to click in her brain, and she realized she could always tell her brother from his smell in a way, but never really paid attention to it. And he smelled nice, too. Ally realized she might have gotten a bit carried away when she gave her brother's hand a brief lick, and was thankful for the fur that was covering what she was certain was a blushing face.

“Aww, you're a good girl, ain't ya?" Shawn said, ruffling the fur on the strange dog's head.

Don't push it! Ally thought, bristling a little from the patronizing tone coming from her twin. But that was before he started to scratch behind her ear. It was like having a spot on your back scratched after an hour of itching. God, no wonder dogs are pushovers for this stuff! She thought as she tried to best to stop her hind leg from twitching.

“What the hell, Allison, you locked a dog up in your room without any water and a lit candle on the floor?" Shawn said as he blew the aforementioned flame out, hearing what sounded uncannily like a disapproving murr from the malamute behind him.

“I know, right?" he said, misinterpreting the sound as the canine's disbelief that somebody could be so irresponsible.

It then occurred to him that his sister would have needed the emergency key to lock her door from the outside. The key that was in the nightstand next to the couch he'd been sitting on, and that she couldn't have gotten without him knowing.

“OK, so I guess she could have opened a window, gone downstairs, into the garage, gotten a ladder, climbed back through the window, locked the door from the inside, climbed back out, somehow closing the window behind her and put the ladder back, leaving you locked in her room. But why?" Shawn wondered. It was only then that he noticed the book, still lying open on the floor. He picked it up, and Allison's hopes rose along with it. This was going to be easier than I thought! Shawn mumbled as he read, turning back a few pages until he caught the description of the ritual's effects.

“Son of a… Ha-ha, very funny, Allison! Now I'm supposed to believe that you turned yourself into a dog? Where did you hide the camera, I know you're watching this!"

While her brother scanned the room for some sort of camera, Allison managed, with considerable effort, to face-paw herself. C'mon Shawn, do you really think I'd abduct a dog just to play a prank on you? Use your brain, for God's sake! She knew for a fact her brother wasn't an idiot, although he certainly looked like one as he began examining various nooks and corners of her room for a tell-tale lens. He wasn't a nerd, but he always did well in school, especially in… Math! Not one of Ally's favorite classes, but a lot of the disciplines she'd studied had dipped into numerology, so she'd paid attention in math class when they had covered various numeric sequences such as… prime numbers! She grabbed the leg of her brother's sweatpants in her teeth and gave it a tug, trying to get him to come down from her bed and stop trying to find a non-existent camera on the top of her wardrobe.

“Sorry, girl, I'm not mad at you…"

Yes, you are, and you're wrong, but that's beside the point… she thought, hoping that what she had in mind would work. Once she had his attention, she dragged her right front paw twice across the carpet, letting out a little bark once she was done. She then did the same thing, only she gave the carpet an extra scratch.

“Hey, somebody taught you how to count! I didn't even know you could teach a dog to do that!" Shawn said.

OK, now pay really close attention. she thought as she moved her paw five times across the floor. By the slightly confused expression on Shawn's face, she could tell he was counting along and noticed she'd skipped four. She gave another little bark to signal the next number, and scratched the carpet seven times.

“Two, three, five, seven… eleven?" Shaw asked, feeling silly for even doing so. He was shocked when the dog gave another little bark and started bobbing her head up and down vigorously. If I didn't know better, I'd think she was nodding he thought. “Th-thirteen?" he asked in disbelief, only to be met with another bark and more nodding. “Fourteen?" he asked, and was barely surprised when the dog shook her head from side to side.

The way he saw it, there were two possibilities. Either someone had trained this dog not only to tap out the first prime numbers, but to also recognize them when asked in English and respond to the question with a 'yes' or 'no', or…

“Ally?" he asked in a shaky voice, only to have the huge dog launch herself at him. Before he could move away, her paws were resting on his shoulders and hooking around his back as her head came to rest beside his, that black and white tail wagging furiously. Still a little overwhelmed by what his brain was forced to process, Shawn nevertheless wrapped his arms around the canine and hugged his sister back.

Ally felt tension she didn't realize she was carrying melt away as her brother wrapped his arms around her. She knew the hug wouldn't really solve anything, but being in her brother's arms filled her with a profound sense of comfort and safety. Things were going to work out, they just needed to sort out the details. They held each other for a while, until Shawn let his sister go so he could ask her the questions that were rattling around in his head.

“So, you actually turned yourself into a dog?" he asked, still struggling to comprehend what his eyes were telling him. Ally gave a nod.

“Why?"

She looked him and blew a long stream of air out her nose in a canine sigh.

“OK, yes or no questions… Did you turn yourself into a dog on purpose?"

Allison shook her head empathically.

“Can you turn yourself back to normal?"

Ally looked away bashfully and eventually gave a little nod.

“OK, that didn't look very confident. Is there anything I can do to help?"

Ally gave a more energetic nod this time before turning to her bed. She picked up the journal her brother had dropped, and being careful not to bite too hard or drool on the pages brought it to him. Shawn picked the book up and opened it back to the page detailing the ritual that had apparently turned his sister into a b… female dog.

“Look, I'll do my best, but I can't make heads or tails of half the stuff in here!" Shawn said after reading a few paragraphs. Ally turned her head, and Shawn realized she was pointing to the shelf above her desk, and over a dozen volumes stacked along its length.

“Ugh! This isn't going to be easy, is it?" he said, looking at his sister once again, just in time to see her shake her head. He was about to ask her where he should start when he heard the sound of a car pulling up.

“Crap, mom's back! What am I going to tell her?" Shawn asked in a panicky voice, getting only a frustrated whine in reply. Truth is, even if Ally did have a brilliant ruse in mind, there was no way for her to communicate it. “OK, don't worry, I'll think of something to tell her…" he said, rushing downstairs.

“Hi, honey! Sorry I'm late, I lost track of time a little. I figure since it's too late to start on dinner we could order something out. Could you go and ask your sister what she'd like?" his mother said as she hung up her coat.

“Uh, Ally already went out…" Shawn lied. So far so good.

“Oh, well I hope she remembered to grab a bite before she left. Did she say when she'll be back?"

“Well, she went over to Bethany's and mentioned she'd be staying there for a night or two…"

“Hmm, and with Beth's mother out of town on business, what a coincidence. Shawn, they're not throwing a party, are they?"

“No! She's… well, you didn't hear this from me, but the two of them have some big school project they've been putting off and its due Monday. Its worth like half a grade, so they really need to get it done on time, and they figured with Beth home alone, they could work without any distractions."

“*Sigh* Well, let's hope they get it done in time. I swear, if school textbooks had more pentagrams in them she'd be a straight-A student. Instead she just wastes her time with that nonsense…"

Shawn allowed himself a sigh of relief. He wasn't a very good liar, but it looked like he just bought himself a few days to get Ally back to normal. It was looking like they'd get away with the whole thing without anyone knowing. And then he heard the sounds of claws against hardwood as his sister made her way downstairs.

For Ally it had been an instinct, albeit a human one. She'd had this discussion with her mom dozens of times and thought they'd come to an understanding. Mom had insisted that her work was a waste of time, and the term 'boy repellant' had popped up more than once. Her dad had a more relaxed attitude, reminding her mom that when they got together he'd still been pretty seriously into dungeons and dragons and it didn't drive her away. She was just about to launch into another argument when the bark coming from her mouth snapped her back to reality. Oh, right…

“Shawn, whose dog is that?"

“Oh, a friend of mine was going out of town for the weekend with his folks and his dog-sitter fell through. I hope you don't mind, but I told him I'd look after him. It's only for a couple of days!" I hope…

“I swear, every time your father goes on a trip you two do whatever you feel like… Well, she is a cutie. What's her name?" she asked, petting her daughter's head.

“Uhh… Pharah!" Shawn said, adlibbing the name from the game he'd been playing what seemed like ages ago.

“Well, OK, but she's your responsibility. Make sure she has food and water, you can let her out into the yard to do her business but you better pick up after her!" she said as she went to her room to change, leaving her children who couldn't meet each other's gaze as the reality behind the little plastic bags sunk in…

*******

Fortunately for Shawn, his mom had decided to shower before diner, which allowed him to make a few arrangements. First, he got on the phone with Bethany and managed to talk her into covering for Ally if their mom decided to phone her. She was Allison's best friend, another goth but of a more perky variety, and so wouldn't let Shawn off the line without knowing what was going on. He managed to sell her a story about Ally spending the weekend at a new boyfriend's place, but having to keep it secret because he's older and she thought her mom would freak. Beth finally relented when he assured her that a grateful Allison would tell her all about it once she got back.

The next call was less dramatic, and involved ordering some Chinese food, sneaking an extra portion in since he was pretty sure his sister wouldn't be thrilled with actual dog food. After he finished dinner with his mom, Shawn managed to smuggle two boxes and a plate upstairs, and quickly found Ally waiting for him in her room.

“Uhm, I'm not sure how to… I mean, do you want me to put it on the flo-“ he stopped when Allison hopped up and planted her front paws on her desk, looking back with a strangely smug expression on her canine face as she waited to be served.

“Alright, miss Smarty-pants, I assume you won't be needing the chopsticks…" he said as set the plate down in front of her and spooned out rice and spicy beef stir-fry.

Ally had originally intended to prove a point by taking dainty little bites, but once her new nose was hit with the full brunt of the dish she found herself literally wolfing it down. She didn't even slow down when her tail started wagging as her brain swam in the sensations supplied by her newly enhanced senses of taste and smell. Well, at least there's some perks to this she thought as she licked her chops clean…

“OK, now tell me which of these books I need and let's go to my room. It will look suspicious if I'm rummaging around in here…"

Fortunately, Ally found that if she squinted she could make out the large-print titles on the spines of the books, and pointed out three hefty volumes to her brother. To his credit, he set right to work, reading up on the journal while looking up various references as he sat on the edge of his bed. Although she loved him for such diligence, Ally started feeling a little bored.

Without anything better to do, she jumped on the bed and lay down with her paws resting on Shawn's thigh and her head nestled between them. As he dropped his hand and began to pet her, Ally closed her eyes and tried to remember the last time the two of them had just spent some quiet time together like this.

“Oh God… does 'autosexual' mean what I think it means?" he asked after about fifteen minutes. Ally just nodded her head sheepishly as she looked up at his face.

“And did you…?" Shawn trailed off, a guilty little whine from Allison his only answer as his sister suddenly turned her eyes away.

Now why did he have to bring that up? She thought as the question brought her mind back to the one hunger she hadn't sated. She fidgeted her hind legs a bit, feeling a little tingle from somewhere beneath her tail. She realized she hadn't really inspected herself back there, and wondered what her girl-dog parts were like. Her next intake of breath, however, brought her attention back front and center. Her nostrils flared as the little black pad on the tip of her muzzle started to sniff of its own accord, catching the scent of something wonderful in the air. As her muzzle lowered, she caught the sight of a tent forming in her brother's sweatpants and realized what she was smelling.

Is that… is he thinking about me? Ally wondered. He'd just asked her about touching herself, more or less, and now he was getting a hard-on before her very eyes. Or more to the point, her nose. And I thought the spicy beef had smelled good! The idea that her brother might be attracted to her was suddenly all she could think about. And now that she was thinking about it, she realized she'd always considered him attractive – he was handsome enough, with the same dark hair and eyes she had, and although he wasn't really athletic, he kept himself in shape.

And he was warm, and he was petting her, he was doing his best to help turn her back… And he smelled so nice! The scent of his bulge brought her mind back to her vision. She realized this was the scent she'd been chasing, her unseen mate that her body had ached for. Well, was still aching, now that she thought about it. And it was getting harder to think about anything else! Her mind conjured up lurid images of her presenting herself before her brother, his hands roaming the smooth fur of her sleek canine body, running along its length until they came to rest on her hips, holding her still as he positioned himself behind her… Before she knew it she'd buried her nose in her brother's crotch and started nuzzling his hardening shaft through the fabric.

“Uh, Ally, what are you doing?" Shawn asked, looking down to notice a pair of big, brown puppy-dog eyes staring up at him as his sister rubbed her nose against his crotch. It was hard to tell with the muzzle, but he could have sworn she was smiling at him. “C'mon, quit foolin' around, I'm having a hard enough time understanding all this stuff…"

Ally took her nose out of her brother's crotch, but didn't wipe the coy expression from her canine visage. He's excited! Her nose wasn't the only sense that got souped-up, and her new ears picked up the slight quiver in her brother's voice, the uncertainty in his tone, and she was pretty sure she could hear his heartbeat speed up. Not to mention that his tent didn't seem to be going anywhere. Her own heart started thudding a bit harder as she realized she might yet make her vision a reality. The rational part of piped up, reminding her she was, at least for the time being, a dog, and permanently his sister, but she wasn't feeling rational.

Still, she wanted to make sure she wasn't imagining things. She slowly got out of bed and started to pad around the room in front of him, doing her best to make every movement graceful and eye-catching. She was suddenly aware that she was essentially naked despite the fur covering her, but rather than feeling bashful, some part of that confident sexual creature she'd conjured up during the ritual snuck into her consciousness. The grace became effortless, the sensuality of her body language second nature, and once her brother looked up and her eyes met his, she knew it was only a matter of time before she had him.

She spent the rest of the evening subtly posing for him, brushing up against him, letting him run his hands across her fur, his touch becoming more confident and relaxed as he got accustomed to her new body. Every stroke sent a tingle down her spine, making her back arch and her tail raise in a less than subtle invitation. But through it all her brother did his best to concentrate on her work. She supposed she was being counterproductive, but the fact that he was doing all this to help just made her want him on a deeper level.

“Alright, I think this is far as I can make it tonight." Shawn said a few hours later, rubbing his eyes. “Let me just get a few things ready and we can hit the hey. Uhm, you've got your room, obviously, but if you want you can bunk with me for the night…" he trailed off as he got up.

Ally rubbed her muzzle up and down his thigh by way of saying 'thank you', and jumped up on the bed the moment he was gone. When Shawn got back about fifteen minutes later, he was greeted by the sight of her lying on her back on his bed. She was a streak of fluffy white fur, her rear legs stretched out while her front paws were folded on top of her chest, her face peering mischievously from between them. Draw me like one of your French poodles! Ally thought, wagging her tail a little.

The movement served to draw her brother's eyes between her legs, and she noted with satisfaction that they seemed to be lingering there. It seemed that having a pretty, naked, eager looking girl in your bed flashing you her privates was something that worked regardless of shape.

“Comfy?" Shawn asked, and Allison wriggled a little to confirm that yes, indeed she was.

“I left the screen door in the kitchen unlocked and greased the track. I figure you should be able to open and close it if you, uh, need to use the 'bathroom'." He said, taking of his sweatpants and getting into bed in his t-shirt and boxers. He turned off the light and made his way to the bed, sliding under the blanket and next to his sister. Once he was in Ally flopped to one side facing him.

“Don't worry Ally, we'll get you changed back. Just try to get some sleep."

Touched by his concern, Ally gave his lose a quick lick as a good-night kiss before scooting a little closer to him. She hadn't realized how exhausted she really was, and now that she was snuggled up next to her brother she found her eyelids too heavy to keep open.

*******

Allison's dreams proved a little too pleasant for her to get a good night's sleep. In those dreams her brother ran his hands along her fur, nuzzling her neck as she trust her rear out at him. He would then lift her tail, making her heart flutter as she felt him touch her between her legs, first with his fingers and then…

…she'd wake up. The second time it happened she finally decided to try and work out some of her tension so she could at least try and get some shut-eye. Fortunately she seemed to have pretty good night-vision, and could see clearly enough in what little illumination from the streetlights made its way through the blinds.

So after some very careful bending and stretching, Ally finally laid eyes on her new 'equipment'. She thought it looked kinda cute – a sort of tan-pink spade nestled in an expanse of fluffy white fur, looking fairly small in proportion to the rest of her. She realized that with a little more effort she could get quite close to the little nub, and since she could…

It turned out that a slightly small pussy and a fairly large tongue were a match made in heaven, and Ally lost track of time as she eagerly lapped her canine femininity, giving it long, loving licks, and when she was certain she could handle it, slipping that big, dexterous tongue inside her. Part of her hoped her ecstatic whines would wake her brother up, but if they did Shawn had pretended to still be asleep. Ally had no idea how long she kept it up, stopping only when her back started to hurt and her tongue started going numb.

Having finally sated her needs, at least for the time being, she hopped back into bed and snuggled up against her twin. As she drifted off to sleep, she became aware that the room now positively reeked of sex and wondered if it was strong enough for her brothers nose to pick up.

*******

It's amazing what people can get used to… Allison thought as she stretched her furry body out, finishing with a little twitch of her bushy tail. Her brother had gotten up first and thoughtfully snuck into the kitchen to fix her a sandwich. As he tore bits of and handed it to her, Ally was being careful not to bite the hand that feeds her. After that, Shawn dutifully hit the books, while Ally tried to struggle to find something to occupy her mind, since all she could do was answer a question with a yes or no, or occasionally point to a book that had the answer to her brother's question.

So without anything better to do, Ally did a little math. When she was done she came to a pretty definite conclusion that she'd performed the ritual while she was ovulating. And since she was at or near her peak fertility at the time, it might explain why she now felt like a, well – bitch in heat. She supposed it might also have had something to do with the spell getting out of hand, since even though she didn't know who the author of the journal was, she'd concluded he'd definitely been male.

The day passed in furious study for Shawn, and frustrating boredom for Ally. It touched her that her brother was working so hard to help her, but by nightfall she needed to be touched in an entirely different way. She'd been teasing him a bit all day, nudging up against him, resting her head in his lap. She was pretty sure her scent that had filled the room during her nightly activities was having an effect of him, whether conscious or not. Whenever he would pet and stroke her his touch seemed more familiar, more confident, and his hand would seem to linger on her a little longer.

By the evening she'd stepped things up a little and started stretching, punctuating each languorous maneuver with a sultry murring sound as her brother sat on the edge of his bed reading book after book. When she was sure she'd caught his eye she 'innocently' turned her back to him and stretched her front out so that her chest was touching the floor and her ass was thrust out at her twin, tail raised high in a very unsubtle invitation. She craned her long neck and caught sight of her brother, the expression on his face telling her all she needed to know. This was going to happen.

Shawn had soon snapped out of his little trance and brought his eyes back on the book in his lap, moments before a large paw smacked into the middle of it, knocking it out of his hands. He looked up to see his sister's face, her ears perked up as she let out a little whine.

“Crist, is it night already?" Shawn asked in disbelief after looking out the window “Ugh! Well, at least I'm making some progress. I figure by tomorrow night I'll be ready enough for us to try and change you back. Don't worry Ally, we'll get this sorted out…" he said, putting one hand behind her ear and giving her a little scratch.

Seeing her brother work so hard to help her, hearing the deep concern in his voice, coupled with what her body was urging her to do proved to be more than Allison could take. She leapt up from her position between her brother's legs, landing with her paws on his shoulders, her weight and momentum knocking Shawn back onto the bed.

“Whoa, Ally! What are yo-“ Shawn was cut off when Allison lowered her muzzle to his lips, closing her eyes as she slipped the tip of her tongue past them. She prided herself on being a good kisser, and there was no way to confuse this tender moment with a happy dog licking your face. It took a few seconds for her twin to get over the shock, but once he did his own tongue slid into her mouth as his arms wrapped themselves around her.

Ally's body twitched with excitement under her brother's touch, as Shawn's hands slid along her back, running across her slim waist and coming to rest on her hips. He gave her a little scratch at the base of her tail and Ally whined into the kiss, raising her tail on instinct. His touches became gropes, telling her in no uncertain way that he needed this as much as she did.

Shawn wondered briefly if the work and stress of the past two days had driven him insane, since he was at the given moment passionately making out with a dog. Well, not really a dog, just his sister who'd accidentally changed her shape. Sure, that makes it perfectly normal… he thought. He knew this was, strictly speaking, wrong on many levels, but couldn't deny how right it felt. He was holding someone who cared for him deeply and who wanted him as much as he realized he wanted her. The fact that they were, at least for the time being, different species didn't seem nearly enough for him to stop this.

As much as Ally was enjoying this tender, loving moment with her twin, it was also driving her crazy, being so close to what her body ached for yet not nearly enough. She tentatively broke the kiss, and looked deep into her twin's eyes, hoping that hers were telling him what her canine voice couldn't. She'd given this some thought, about how they would eventually do it.

While she would have loved to lay on her back and have him slide between her legs, looking into her eyes as they made love, she decided on something more… practical, given her current shape. With that in mind, she slid off her brother, turned around and lifted her tail. She did her best not to pant, her heart pounding as she craned her head to look at her brother as she presented herself for him. An impatient whine left her throat as Shawn got up and locked the door before striping off his clothes.

Shawn couldn't believe what he was doing, but there was no longer a doubt in his mind that he was going to do it. His shaft was twitching in anticipation and as he stepped up behind Ally he realized she was big enough that he'd just need to bend his legs slightly to get level with her.

“Ally, you sure about this?" he asked, only to have her rub her rear against him in response. Her little spade was already wet, so putting one hand on her hip Shawn carefully guided the head of his shaft to the center of it and gave a gentle push. He watched as she slowly stretched around him, until his sister apparently decided things were going too slow and pushed back.

Ally gave out a little yelp, or at least hoped it was a little one, as she felt her new pussy wrap around her brother's shaft. Her mom might talk about 'boy repellant' but Ally was by no means a virgin. Still, the sensation of her brother's cock slowly pushing into her, the hard warmth of his shaft filling her after the desperation her heat had driven her to felt better than anything she'd felt in her entire life. Her ears picked up his groan and it sent a little shiver running down her spine, the knowledge that it felt as good for him.

With the change in her anatomy, especially beneath her tail, Ally still felt a little bit like a virgin. Her canine-cunny was built differently, and seemed to grip and cling around the cock being shoved slowly but surely into it. Last night she also worked out that her clit now seemed to be just inside her pussy, a suspicion now being confirmed as Shawn's rod rubbed against it. God, I hope I don't wind up howling when I cum! Ally thought, even now trying to keep the yips and whines coming from her mouth as quiet as she could. When she finally felt her brother bottom out, she closed her eyes and let out a contented murr, enjoying the sensation of fullness.

Shawn had stopped too, but for an entirely different reason. Ally's new pussy was warmer and tighter than anything he'd ever felt before, and considering it had been a while since he'd last gotten laid, and that he didn't have the time or the privacy to do anything about it for the past few days, he was dangerously close to cumming already. He let his hands roam across his sister's sleek form, eventually running them along her underside and rubbing his fingertips against her nipples. The fact that there were more of them apparently didn't make them any less sensitive, sending Ally's snatch into spasms as he brushed against every hard little nub.

Once he felt like he'd calmed down a little he pulled out most of the way before sliding back inside her. He watched in amazement as her pussy seemed to cling to his shaft as it slid out, as if reluctant to let it go. He knew a little about canine anatomy, including the fact that a b… female dog's vagina had special muscles around the opening meant to clench up behind a male's knot and keep the two tied together until the male was done. He didn't have a knot, but he could both feel and see those muscles as they clenched rhythmically around him. He grabbed Ally's waist and began sliding in and out of her at a steady pace, hoping this felt as good for her.

Ally's speech center was forming moans and sighs, but what got out of her throat was a series of whines and rumbles as the shaft penetrating her new puppy-pussy hit all the right places, including some she didn't even know she had! And when Shawn ran his hands over her nipples (all eight of them!) it was all she could do to keep her legs from buckling. Fortunately Shawn had slid his hands under and around her slim waist, so at least her rear end would stay up. She craned her neck to get a look at her brother-turned-lover, disappointed a little that her fluffy tail seemed to be blocking a lot of the view. Still, she'd managed to catch his gaze, and the expression of naked lust on his face only served to turn her on even more.

Allison usually liked a gentle lovemaking, but her new body seemed to crave something a little faster. Although she loved knowing that the person thrusting into her was somebody that cared for her as deeply as she cared for him, it wasn't just lovemaking that she needed now. She needed a rutting, an almost feral mating, and didn't care about any scratches or bruises that might come along with it. Still looking at her brother she gave him what she hoped was a devastating combination of bedroom and puppy-dog eyes and let out a needy whine as she pressed her rear against him.

“Oh, so that's the way it's gonna be?" Shawn asked, reading through his sister's teasing as he tightened her grip on her waist. Since Ally's canine form was pound for pound probably stronger than his human one, he decided to let go and really let her have it. He sped his thrusts up, sawing in and out of that deliciously tight snatch as Ally began to let out little yips of approval. There seemed to be something infectious about her frisky mood, and Shawn was soon grunting as he gave her the pounding that she seemed to want.

Ally was now panting, her tongue lolling out of her mouth, eyes lidded and vacant as the sensation of being rutted washed over her. Even though almost none of their fluids were getting past the tight seal her pussy had formed around Shawn's cock, her nose was nevertheless filled with the smell of their mating. Combined with the sounds of her brother's hips as they slammed into her fluffy butt and the grunts he was making as he bred her, Ally's brain was having a hard enough time just processing the avalanche of sensations.

Her brother had changed his angle a little, and now she could feel herself being bounced up slightly with every thrust, her rear paws barely touching the floor as her rear was lifted whenever her brother hilted himself. And when he'd garbed the base of her tail her eyes had shot open as a yip was torn from her throat. Well hello there, Mr. New Erogenous Zone! And a good morning to you. Mrs. Undiscovered Kink! With this new grip, Shawn was able to pull her back a little with every thrust, and Ally wasn't sure how much more she could take, her brain feeling like it was melting as she approached the crest of a massive orgasm…

Shawn found himself huffing through clenched teeth as he kept up the savage tempo, not sure where the energy was coming from. He wasn't sure how Ally would react to having her tail grabbed, but it seemed like he couldn't do anything wrong. Her pussy was still clenching like a vice around him, massaging his shaft with every stroke. He knew he'd leaked plenty of precum into her by now but not a drop had leaked out to wet the fluffy white fur surrounding her sex. As he felt his balls pull up he gave a few more hard, desperate thrusts before shoving every inch into her, holding her close as he shot his seed deep inside her.

The warm, wet sensation that spread through her body with every twitch of the maleness buried in her sent Ally into the most powerful climax she'd ever felt. The feel of her mate's hands gripping her hips, the thrill of feeling his seed fill her, claim her, it was everything this new body of hers had been crying out for. The desperate, burning need to breed finally fulfilled, her canine form shuddered as her pussy clenched tight around her brother's shaft, instinctively trying to keep the male locked inside until his seed had a chance to take. She grit her teeth, stifling what would have been a full-blown howl into a long, shaky whine, as her body accepted her brother's seed.

Shawn stayed buried inside Ally, the grip her sex was keeping on his shaft telling him in no uncertain terms that she wanted him to. After the sounds she'd made, there wasn't a doubt in his mind that this had felt as amazing for her as it did for him. There would be a lot for them to talk about, once both could talk, but after a mentally exhausting day and the physically exhausting evening, the teen could think about little else apart from crawling into bed and getting some much needed rest.

Ally just stood there, enjoying the sensation of a male inside her as long as she could, until Shawn's cock softened and slipped out of her. She felt a bit of his seed trickle out of her recently-bred spade, but knew most of it was still deep inside her, the knowledge filling her with a profound sense of contentment. Turning around she saw that Shawn was dead on his feet, so she padded past him, brushing up against his thigh as she did and hopped into bed, inviting him to join her. Once her twin slid in under the blanket, she pressed her muzzle to his lips and gave them a little lick as a good-night kiss.

“Good night, Ally…" Shawn muttered, his eyelids already half-closed.

Having said their good-nights Allison turned her back to her brother and wriggled backwards until she could feel his body against her back. Getting the hint, Shawn curled up against her and put one arm around his sister, nuzzling his face into her furry neck as they drifted off, exhausted but satisfied.

*******

While her sleep was deep and tranquil this time around, the call of nature nevertheless woke Ally up at some point in the early morning, and the teen-turned dog steeled herself for yet another ordeal. While there were some parts about her new canine lifestyle that were fun, doing her business stark naked and out in the open certainly wasn't. And why is it so freaking cold? She figured her brother might have left the window open a crack at some point during the night, a theory supported by the fact that the room no longer smelled of sex, or at least not as much as when they'd gone to bed. Still, she had her brother's body there to warm her back as they spooned, and with her fur coat covering her she should at least be…

It only then occurred to look down at her paw. Her eyes, now seeming much more focused shot open at the shock of seeing a smooth-skinned hand. Both that hand and her eyes slid across her gloriously smooth skin, her mouth splitting in an ecstatic grin. She didn't even care that the body she was exploring was the same one that she had before the ritual, rather than the voluptuous form she'd envisioned. This was like something out of a fairytale, although Prince Charming did a lot more than kiss her to make her turn back. All this excitement brought her mind back to the reason she was awake in the first place, and Ally bolted from the bed straight to the bathroom down the hall, managing to stop herself from hugging the toilet bowl.

Her morning ablutions complete, she went to her brother's room and almost woke him immediately. She stopped when she realized she was naked, and although he'd been seeing her naked for the past two days, and then some, she still thought it might make things awkward between them now that she was herself again. Deciding to play it by ear, she crawled back into bed, getting under the blanket this time, before nudging her twin's shoulder until he woke up. Shawn slowly opened his eyes, hoping that what he was seeing wasn't just a dream. Lying next to him, with her head propped up on one elbow was Ally, that is to say, the original Ally.

“Ally? Is that, I mean, are you…" he groggily tried to form a sentence as his sister just looked him in the eyes. And then barked. Shawn practically felt the blood drain from his face and panic grip him before his sister's face finally broke into a grin as she broke into laughter.

“Oh God! I'm sorry Shawn, but the look on your face…" Ally said, gathering her breath between laughing fits as she writhed on the bed, holding her sides.

“You... you bitch!" Shawn said, the euphoria of his sister's recovery still fighting the shock of the thought that her mind had gone… doggy.

“Nu-uh! I got better!" Allison teased, finally managing to get her breath back.

“How… when?" Shawn said after propping his back up on the headboard.

“I don't know. I just woke up a few minutes ago and I was… me again. I guess it must have happened during the night…" she said, and the moment she did an embarrassed silence fell on the two of them as they remembered the events of the preceding night.

“Yeah, about last night…" Shawn began, his voice suddenly anxious. “I mean, I can't even imagine what it was like for you, suddenly finding yourself in a different body and well… I'd understand it if you weren't entirely yourself these past few days…" he finished, suddenly unable to look her in the eye.

“Well… what if I was?" Ally spoke softly, also unable to meet her brother's gaze. She realized her brother was giving her an easy out, but she didn't feel like taking it. God, it's like I'm a little girl again, unable to ask a boy if he 'likes-likes' me!

“W-what do you mean?" Shawn asked, a note of cautious optimism sneaking into his voice.

“I mean, what if I was, and still am…?" Ally said, finally managing to drag her eyes up and meet her brother's gaze. Once she did, the anxiety and awkwardness seemed to melt away as she slowly took his hand in hers and he leaned closer. Their eyes closed as their lips met and the two shared their first kiss as lovers. It reminded Allison of something else she'd wanted to do last night, but couldn't.

“I love you Shawn." she husked, feeling a little out of breath after that kiss.

“I love you too, Ally." Her brother replied, running a hand along the side of her face.

“And for the record, last night was amazing but let's… let's take it slow, OK?" she said, feeling heat rise to her face as she brought up what happened last night, and how it felt. There's definitely some advantages to a furry face…

“All right." Shawn said, not sounding the least bit disappointed. He didn't want this to be just a sex thing, and was as eager as Ally to explore this new, deeper bond that had grown between them during the past two days.

“Oh, and I've been meaning to ask – how did you cover for me? Mom seemed pretty cool about the whole me-being-gone thing." Ally asked.

“Ah, about that. I sorta told her you and Beth had to work on a huge school project that you'd put off for the last moment…"

“Ugh. Well, I suppose a responsibility lecture is a small price to pay for having gotten away with this whole thing."

“Yeah, and then I called Beth to get her to cover for you in case mom called, so I had to think of something to tell her and… you now owe her a detailed story about you spending the past two days with an older guy." Shawn finished sheepishly.

*******

As Ally predicted, she got a speech from her mother about managing her time, taking schoolwork seriously (with the ever-hilarious '… and I don't mean your Hogwarts stuff, either!' line thrown in), which was bad enough when she actually did something to earn it.

Still, listening to her mother's rant was easier than making a story up for Bethany. Her friend almost jumped her and began to press her for 'juicy' details, forcing Ally to improvise a lurid tale of a passionate couple of days with an older guy whose name she couldn't possibly divulge, going so far as to hint that he's married. She wrapped the whole thing up by saying it was wonderful, but definitely a one-time thing and how grateful she was to Beth for covering her ass. She was pretty sure her friend bought most of the story, but not the part about it being just a one-off fling, claiming that Ally was acting like she's in love.

That had prompted Allison to change the subject, since Beth had pretty much hit the mark. Ally felt very much in love with a certain someone, but she was damned if she was going to tell anyone with whom! Still, she'd eventually noticed a change in herself that her best friend had spotted so keenly.

It wasn't the change she'd tried to conjure up – she wasn't the passionate, buxom creature that her mind had built while she was performing the ritual. Still, she felt like she'd found the mate that wild female had been chasing across a moonlit field, driven by a desperate heat. She was content, yet thrilled at the same time, and wondered if that vision had been a goal, or the means to an end.

Her body was still the same one she'd considered a bit… lacking in certain feminine departments, but that no longer bothered her. Having someone to look sexy for made her feel a lot sexier, and it started to show. The way she dressed, the make-up she wore, even the way she moved changed subtly, exuding the confidence of someone who knew there was at least one pair of eyes that couldn't get enough of her. So the next time she went clothes shopping she picked out some of the more eye-catching items she thought would look good on her – striped stockings, some shorter skirts, as well as some lingerie that helped her make the most of what she had.

Her boldest new accessory had been a spur-of-the-moment thing that caught her eye in a store she frequented that sold interesting leather items. She'd blushed when she'd looked at herself in the mirror wearing the studded leather collar, but that was nothing compared to the expression on her brother's face when she'd walked into his room wearing the collar and very little else.

It had been about a week since Shawn had, in a quite literal sense, made a woman out of Allison, and since then these little night-time excursions had become a regular thing for the twins. Once their parents were asleep, one of them would sneak into the other's room and they'd spend some quality time together. It would be fairly tame – slow, passionate kisses, whispered pillow talk, caresses under the sheets – until they fell asleep together. The visitor would invariably get up during the night and slunk back to their room, to avoid their parents seeing something that might scar them for life. They figured since their mom and dad had always been careful not to be caught together by their kids, they owed them the same consideration.

They found they didn't really mind keeping things slow, at least for a time. The strange thing about their relationship is that they didn't feel the need to date. The point of dating was to get to know each other better, but after a lifetime together there was very little, if anything, the two didn't know about each other. So these little nightly cuddle-sessions helped them build intimacy as lovers rather than siblings.

But after the first week elapsed, they found themselves getting friskier, and as a consequence noisier, so plans were made for a more intense interlude. When next Saturday rolled along, they told their parents they were going to a party at a friend's house together, which was not entirely a lie. They were going out together, and they intended to have fun. Their mom and dad were glad to have their kids getting along and felt reassured they'd be there to look out for one another, so they agreed readily enough.

Once they were out of sight, the two headed for the little lake that lay on the edge of town, about a mile away from their house. Shawn had already been there earlier that day, scouting out the area and setting up a tent with one sleeping bag. Even though it was quite warm for late spring, the water was still too cold for swimming, so they were glad to see they pretty much had the place to themselves.

The patience that had led them through the last week or so was now depleted, and Ally almost jumped into her brother's arms as they kissed passionately, moaning into each other's mouth now that they didn't have to be quiet. They broke their kiss, panting as they stripped each other's clothes off before popping into the tent.

Once inside Ally practically knocked her brother back on the sleeping bag, climbing on top of him and pressing her lips to his as she pressed her body against him. She didn't realize how badly she'd wanted this, her slit already slick as she felt her brother's cock stiffen against her stomach. He seemed to want it just as much, his hands roaming down her back, tickling a little as they trailed along her slim waist before coming to rest on her perky butt. Shawn gave a playful little squeeze and Ally could feel her nipples stiffen against his chest as her brother groped her cheeks. The only way this could be more perfect would be if…

“Ah! Shawn, can I ask you something?" Ally panted, trying to keep her voice steady as her brother's fingers slid a little lower, down the crack of her firm ass and towards her needy honeypot.

“Of course, Ally…" he replied, planting a little kiss on her collarbone.

“Can –ah!- can we do it outside?" Ally managed to get out despite the tickling her brother's kisses were giving her.

“You sure?" Shawn asked, a bit surprised by the question, even though one look at his sisters face as she bit her lower lip told him she was. He gave her a nod and felt her shudder with excitement before getting off him and zipping out the tent.

The moment she was outside, Ally knew she'd made the right decision. It was a balmy night with no one in sight for miles and it had been long enough since the shore was mown that the grass had time to grow just past her ankles, with occasional patches of wildflowers visible even in the moonlight. As Shawn dragged out the sleeping bag, Ally reflected on how much the scene surrounding her resembled the one in her vision, feeling giddy at the thought of 'mating' with her lover under the starry sky. After spreading the bag on the soft grass, Shawn was about to lay down so they could pick up where they left off, but a hand on his shoulder stopped him.

Nudging her brother out of the way, Allison laid down on the sleeping bag, noting how her brother's eyes followed her naked body as she got comfortable before spreading her legs, blushing as she revealed her moist young pussy to her lover. She felt a bit silly about her shyness, and wondered why she'd had no problem acting a lot more wanton when she'd been a canine. Probably 'cause I'm a lot more naked now she thought as she looked at herself, her pale skin seeming to glow in the moonlight, dispelling any notion of modesty.

Shawn moved until he was between her sister's legs, drinking in the sight of her before lowering his body over hers, supporting himself on his hands. As their eyes met they shared a kiss while one of Ally's hands snaked between them. It didn't take her long to find her brother's cock, and once the twitching shaft was in her palm, she wasted no time guiding it lower, until the tip was wedged between her slick lips.

She let out a shuddering gasp as her twin slowly entered her, his rod sending tingles running through her body as it filled her. She looked into his eyes as he pushed into her, seeing her arousal mirrored in his face. As wildly passionate as their literally doggy-style mating had been, she found the intimacy of this moment profoundly fulfilling. When she finally felt his crotch press against her, she put her hand behind his head and pulled him down into another kiss. She moaned into his mouth as she gripped the back of his head, communicating her need in a way words couldn't.

She released his head and gave his lower lip a little nibble, the look in her brown eyes telling him exactly what she wanted next. Shawn slowly pulled himself out until only his tip was still wedged between those moist folds before giving one sharp buck that sent the rest of his shaft back into Ally's love-tunnel. Those same eyes shot open along with her mouth as Ally let out a happy sounding little yip at the sudden penetration.

“Ooh, I know that sound!" Shawn teased.

“Sh-shut up –ah!- dogfucker!" Ally replied with a giggle, blushing and trying unsuccessfully to hide her face.

The insult didn't seem to have much effect on Shawn, except to motivate him to get more dog noises out of his sister. He would pull out slowly each time savoring both the sensation of Ally's lips against his shaft and the expression on her face as he slid out of her, only to drive the whole thing back into her in one thrust, watching as she bit her lip to suppress any more embarrassing yips. If he keeps this up, I'm gonna howl right in his ear she thought.

Still, right now she was sure she'd forgive Shawn anything, let alone a little teasing. The hard piece of meat sliding between her messy folds was sending her a little closer to heaven with every buck of her brother's hips. She felt her own body responding, a jolt running through her with every thrust, making her writhe and rub her body against her twin's. The slap of his sack against her cheeks, the throbbing of his cock as it leaked inside her already messy cunny, the sensation of her stiff nipples rubbing against his chest all conspired to drive Ally insane with pleasure.

She wrapped her arms around him, feeling the muscles in his back tense as he made love to her, grunting quietly with every pump of his hips. She spread her legs a little, planting her bare feet into the soft grass as she raised her hips slightly to give him better access and make sure she got every little bit of his cock inside her.

“Fuck me, Shawn…" the words left her mouth without her even knowing, a husky whisper into her brother's ear that seemed to have an immediate effect on her brother.

Shawn braced himself and sped up his thrusts, setting a fast pace as he sawed in and out of Ally's snatch. Their pants and moans were joined by the wet smacking sounds of their lovemaking, his hips now working furiously between his sister's legs. They looked into each other's eyes, although their gazes were becoming vacant, their brains too flooded with the sensations of touch to pay much attention to sight. Well, there was the smell to, the moist lake-shore air carrying the scent of the grass crushed beneath them, the sweat starting to bead on their bodies, as well as the more intimate scents of their lovemaking.

Ally was now past caring what sort of sounds she made as she clung to her brother. She could feel her perky breasts bouncing on her chest from the glorious pumping her pussy was taking, the cock sawing in and out of it hitting all the right spots. She could hear what a mess she was down there and reflected briefly on how her canine pussy had kept all those wonderful juices sealed up inside her. And she knew for a fact that wherever her tail was now, it was wagging!

A long, shaky moan made its way out of her mouth, drowning out Shawn's grunts as he jackhammered away between her legs. She laid her head back, staring vacantly at the starry sky, and the silvery sickle of a new moon hanging in it. The seemed to spur her on a bit, and she dragged her nails along her brother's back, leaving little rosy lines as she did. She almost giggled at the thought that Shawn was going to have more claw marks after having sex with her as a human than he did when she was a dog!

“*grunt* I'm gonna…" Shawn grunted out from above, speeding up a little.

“Mmh, do it! Cum inside… c'mon… fill me up…" Ally moaned, wrapping her legs around Shawn's back to help drive the point home.

She was safe and she wanted, needed to feel him claim her, mate her under the silvery moonlight. And more to the point, she needed to come, having been achingly close to a climax for what seemed like forever. Shawn sped up, rutting his sister with everything he had, to the point that Ally had to bite her lip, worried that she would actually howl at the top of her voice! Her arms and legs wrapped around her lover, pressing her body tightly against him as his cock pistoned in and out of her. She could feel the heat of him against her, inside her, contrasting with the cool night air, could feel his heartbeat both against her chest and between her legs.

She let out a strange mewling noise as her orgasm washed over her, narrowing her entire world down to the shaft still pumping between her legs. She clung to her lover, arms and legs wrapped tightly around him as her tunnel clenched around his cock. Each time her pussy squeezed around her brother's rod its walls rubbed against it as if trying to keep it inside her. It seemed to get its wish when Shawn gave one last thrust, burying himself to the hilt before he let out a groan as his cock erupted inside her.

Ally wasn't sure if she'd had another climax when she felt her brother's cock twitch and that warm, wet feeling begin to spread through her, or if she'd just ridden out one massive orgasm. Either way, she didn't really care, clinging to her brother as he sent rope after rope of hot sticky cum spurting into her. All the while he'd kept grinding himself against her, the sensation of his crotch rubbing against her clit sending shivers up her spine.

Eventually Ally felt her strength fail her and her limbs drop to her sides. She could feel Shawn's cock inside her, still hard after having shot his load into her eager snatch. Satisfied in a way words couldn't describe, she felt like she could lie like this forever. Her brother seemed to have a slightly different idea, and Ally felt the world spin literally this time as Shawn rolled them both over so that she was now lying on top of him. She snuggled up against him and gave him a little kiss as she felt his shaft begin to soften inside her.

“Mmmh, that felt amazing!" she said as Shawn's hands trailed down her back.

“Yeah, although the sleeping bag's gonna be a mess…"

Her brother's observation gave Ally a kinky idea and she surprised Shawn by almost jumping off of him and then getting back on, this time facing the other way. Ally gave the tip of his wet, semi-hard cock a little kiss before running her tongue along it, smiling as her brother shuddered at the attention his sensitive member was getting. She let out a squeak of her own as Shawn rose to the challenge, burying his tongue into her creamy cunny, apparently unconcerned that he was cleaning up his own mess. The twins began eagerly cleaning each other up, doing such a good job that it was almost a shame that once they were done they were ready to make a mess again…

*******

As they waved their parents goodbye, Allison and Shawn tried not to look as happy as they felt. The reason for that happiness was that their mom and dad would be gone for the next seven days, leaving the twins on their own. After the two had graduated, their parents originally suggested a little family vacation, but Shawn and Ally had seen it coming and made a counter-offer.

They reasoned that they can always do family stuff together, but since they were both adults now, this would be a good opportunity for their parents to have a nice romantic vacation alone. Unbeknownst to them, their mom and dad had been thinking along those lines for some time now, but felt guilty about just flat-out telling the kids they wanted some time away from them. And since they seemed to be getting along so well recently, they decided they could go away for a week without worrying about their house being turned into a Mad Max-style compound.

So as their parents' cab disappeared around the corner, the two tried to focus more on what they would be doing, rather on what their mom and dad would be doing, since they were pretty sure they'd all be doing the same thing. They'd made a decision – their parents' bedroom would be off limits, but everywhere else in the house was fair game. So after drawing the curtains, double-locking the doors and unplugging the phone, they started with the living-room.

Having a particular thing in mind to kick off their week together, Allison plopped down on the couch, lying on her back with her butt propped-up on the armrest and her legs spread as they dangled past it. The sight of his sister lying there with her crotch in the air as she nibbled on one finger had Shawn practically tearing off his clothes. The moment they were off he got between Ally's legs, grabbing her by the waist and pulling her closer until her butt was hanging off the couch a bit. He then put a hand under each cheek, for support as well as for the sheer delight of cupping his sister's perky ass.

He was already hard, but just as he was about to maneuver his tip to Ally's inviting slit, her hand quite literally cock-blocked him.

“Nu-uh, I got this one covered…" she said, grinning as she dangled a small, clear tube in one hand. She raised her legs and hooked them around her brother's waist, seeing a light bulb switch on in her twin's head as he realized where she wanted him.

“You sure?" Shawn asked, his voice leaving no doubt he was clearly hoping for a 'yes'.

“U-huh. I wanna start of our special week with something extra special…" she said, biting her lower lip in anticipation.

Her crotch and tummy were blocking her view but she could hear slurping as Shawn lubed up his cock just before she felt a cool, slick sensation as a hefty dollop of lube was pressed against her pucker. In truth, she'd prepared herself back there earlier, but it was nice to see how considerate Shawn was with his twin sister. She gave him some very encouraging moans as he slipped his finger in past her little pucker.

“I'm ready, you can put it in…" she said after about of minute of Shawn's diligent fingering.

She felt him pry her cheek open with one thumb while his other hand presumably guided his shaft to her lube-slicked opening. Ally relaxed, taking deep breaths as she felt her twin's head first nudge against, and then slide past her pucker. Her contented sigh was drowned out by a long, low groan coming from her brother.

“Mmh, first time?" Ally asked coyly, although she although she already suspected what the answer would be.

“Aahhh, yeah. You?"

“Ah-ah! A lady never tells…" Ally teased, clenching up on her brother and grinning at the way his eyes lost focus as his shaft was squeezed. In truth she'd never had a guy back there, but some time ago she started experimenting with a few of her toys and found she really liked having her ass stuffed while she played with herself. And this position gave her great access to her needy little pussy, something she was already taking advantage of as she rubbed her clit, incidentally giving her brother quite a show.

Once she'd relaxed, Shawn made slow but steady progress, burying inch after hard inch past her slick little pucker. Once she'd gotten her other hole nice and wet, Ally slipped a finger in, delighting in the way her pussy felt tighter and more sensitive with her twin lodged in her ass. Once Shawn had bottomed out, she could tell he was resting more for his sake than for hers, having been brought close to the edge after sheeting himself in her tight little tush. Feeling impish, Ally gave him her best bedroom eyes before slipping another finger in, moaning and whimpering as she pumped the two digits in and out of her honey-pot. Figuring that if he couldn't last long, he could at least go out with a bang, Shawn drew himself out until only his head remained in Ally's ass before plunging the whole length back in.

“OoooOOooh!" the strange undulating cry surprised even Allison as her brother started to actually fuck her rear, something that her toys hadn't really prepared her for.

“Oh, does little miss porn-star want me to slow down?" Shawn teased.

“N-ah!- No, keep going!" Ally said, too turned on to keep up her little act. Her fingers worked frantically, dipping in and out of her slit as her brother picked up the pace, his thrusts shallower but faster.

Unlike their gentle moonlight lovemaking, this was fast, sloppy, but nevertheless immensely satisfying. Allison had wrapped her legs around her brother's waist, panting and moaning as Shawn's hips smacked into her pert tush, her brain bubbling over from the sensations coming from her rear end. In a fit of perverted inspiration, she grabbed one of her perky tits with her free hand, kneading the sensitive breast and every now and then pinching her stiff little nipple. That had sent them both over the edge and she could feel the novel sensation of hot cum gushing into her, not a single gooey drop getting past her tight pucker. They stood like that for a little while, until Shawn's shaft started to soften and he pulled out, Ally's newly deflowered ass seeming reluctant to let its new toy go.

“Mmmh, I'm gonna be walking funny after that one… “ Ally purred as she reached for a roll of paper towels. She'd had the foresight to put them in various places around the house, so there wouldn't be any inconvenient stains to explain once her mother got back. However, since she was on display at this angle she made a show of sticking a few fingers in and out of her cream-pie before wiping it clean.

“Don't tell me you're tagging out already?"

“No way! But I think I'm gonna go upstairs for a little power-nap. We've got a loooong night ahead, after all…" she replied, putting a lot of unsubtle emphasis on the 'long'.

“OK. I'll fix some lunch while you get your beauty sleep."

Ally gave him a little thank-you kiss before heading upstairs, putting a little slink into her step just in case Shawn was watching. Her bed was looking really good, and as she crawled under her blanket, Ally let out a long suggestive moan as she squirmed into a comfy position. The rutting Shawn had just given her had really taken a lot out of her, but she knew that after an hour or two of shut-eye she'd be fresh as a daisy and ready to jump his bones.

“Mmmmh… gunna fug his brainz out…" she mumbled sleepily and went out like a light.

*******

The dream that played behind her closed eyelids had been a familiar one, although one she hadn't dreamt it in a while. Once again she'd found herself under a full moon, with a familiar heat stirring in her loins. Like the last time it had that strange, life-like intensity, as if she'd been whisked away to that moonlit field, or was looking through the eyes of someone who lived there. Well, she certainly knew what to do. She let out a long howl, saluting the Moon in its sky before launching into a run, her bare feet beating against the soft, dewy grass while the cool night air whipped across her equally bare body.

One thing was different this time – she wasn't on the prowl for some unknown male. Her nose had picked up a familiar scent and her legs carried her tirelessly toward it, sometimes two of them, sometimes four. Once she caught sight of him she slowed down, and the dream took on the elements of their various romantic encounters. She felt every touch, heard every panting breath with perfect clarity, but her sense of smell seemed clearer still. She caught the heady scent of her own heat, her brother's sweat as he mated her, the smell of his seed as it leaked out of her sex…

Through it all her shape seemed to change, the only suggestion of dream-like surrealism in the whole interlude. One moment she'd be her normal, human self, and the next she would be the powerful black-and-white canine she'd turned herself into some time ago. The one thing that didn't change was Shawn's treatment of her. Her lover didn't seem to care what shape she was, and Ally found she didn't really care either. As long as she felt his body against hers, she realized she didn't give a damn if there was a fur coat between them.

*******

As pleasant as the smells in her dream were, the one that woke Ally up was at least as good. Her brother made these really good, borderline-artisanal burgers, and as she sniffed the air Ally could practically see them sizzling away in a cast-iron pan. Since there was no going back to sleep after that, she stretched herself out in preparation for getting out of bed, feeling a little shudder begin in her shoulders, travel down her back, along her tail…

Oh no… was all she could think as she looked down her body, knowing full well what she'd see. During her sleep she'd managed to kick the blanket off herself without even noticing, since her fur had kept her warm enough. But I didn't even do anything this time!

In truth, she had meant to study up and revisit the spell at some point. Even though it hadn't done what she expected, the result was still pretty amazing, and she wasn't about to give up on magic now that she found something that works. But she'd been pretty busy with graduation and… other things. Christ, how long ago was it that she'd tried the spell? Numbers and dates crawled their way through her still sleepy head until she came up with about one month. That unit of time brought to mind other things that happened monthly.

After some awkward bending, Ally was staring at what was once again a cute little tan-pink spade peeking out from a mess of fluffy white fuzz. Sure enough it looked a little wet and sensitive. Since she was already in this position, Allison figured she might as well check more thoroughly and gave her canine cunny a few licks, confirming that she was indeed quite sensitive back there. Her official position was still shock and dismay, but God damn it, this tongue and this spine were a heck of a combo!

Still, she calmed herself down by remembering that she now knew how to 'cure' her little affliction. So she gathered up her willpower and managed to pry her tongue from her little spade and made her way downstairs. No wonder the smell of those burgers woke me up she thought as her canine nose reminded her of other hungers that needed sating.

*******

“Hi there, sleepy-head! Hope you're hun-“ Shawn started talking and stopped once he'd turned around and actually saw his sister.

Hungry? Like a wolf! Ally thought to herself.

“Oh God Ally, don't tell me you did it again?" her twin asked, and Ally responded with an annoyed little growl and a shake of her head. Sometimes people turned into dogs and it wasn't anyone's fault…

“Then how?" he asked, apparently forgetting Ally was once again quite limited when it came to communication. Well, there's one way…

She came up to him and began running her paw against her tiles, glad to notice that her brother had gotten the clue and was counting. By the time she'd got to thirty, her paw was tired. She saw Shawn mumbling to himself as he tried to work out what '30' was supposed to mean. She also saw the burgers laid out on a platter on the table, and wished he'd hurry up.

“Thirty days? Has it been a month since… last time?"

Ally nodded her head, seeing her brother seemed to be thinking along the same lines she was. Her choice of birth control was an IUD, and although it had proved particularly effective it didn't actually stop her from ovulating. And 'going into heat' apparently brought out the bitch in her.

“Well, we know what made you change back last time. You wanna…?" Shawn trailed off suggestively.

Well, eventually she would, but right now there was something in the room that looked better than her brother. Shawn apparently got the picture when she went up to the table and put her front paws up around one of the plates, her tail wagging now that her sharp canine nose was mere inches from the food.

Rolling his eyes, Shawn sat down at the table, placing one burger on Ally's plate and cutting it up into bite-sized (at least by the standards of a very large malamute) pieces. He ate his burger one handed while feeding his sister with the other, grateful that Ally was being careful with those teeth.

After a good meal, neither of them felt like jumping into the sack, and since they still had the house to themselves, the two settled down on the couch to zone-out in front of the TV for a while. Shawn laid down lengthwise, back against the armrest and one leg dangling off the side, while Ally positioned herself between his legs, with one of her front paws on either side of his waist and her head resting on his stomach. The position had a hug feel to it, but more importantly it left those big, brown puppy-dog eyes pointed straight at her twin. A few seconds of that and an impressively needy whine later Ally found herself the recipient of some much needed head petting and ear scratching. This would feel patronizing if it didn't feel so amazing!

Neither of them really paid much attention to the TV, feeling content just to spend some quality time together. It was different than last time when Ally was changed. Although it had marked a turning point in their relationship, there was an underlying panic and dread to the whole affair. Allison suspected that the whole reason she didn't freak out was that the spell had really given her some of the strength and confidence she'd felt she needed. Still, it was heart-wrenching to see her brother desperately cover for the bizarre occurrence, and then study frantically to try and get her back to normal before their mother realized she was missing.

And even though they'd shared a passionate moment that had solved all of those problems over night, she didn't get a chance to truly enjoy herself with her brother while in this shape. Man's best friend with benefits she thought to herself, letting out a murring sound as her brother hit a particularly sweet spot just behind her ear and her rear leg started to shake. Shawn had kept up giving her some much needed scratchies for quite a while before deciding to slack off.

Since he was no longer interested in giving her rubs, Ally decided to help herself, murring again as she started to rub her head up and down her brother's stomach. And apparently she'd rubbed either too hard or two low, since she could now feel a bulge forming underneath her neck, her nose confirming that it was what she thought it was. Well, it seemed that even though her twin was happy to lounge about, there was someone who wanted to play! Scooting her way down the couch, and incidentally down her brother, Ally grabbed the waistband of his shorts and began to tug them off.

“Whoa Ally, what's gotten into you?" Shawn asked as his sister slid his shorts off with her teeth.

Nothing yet, but I've got my eye on something she thought as she let out a playful little growl. Shawn supposed he should have been scared… well, stiff, by the sight of a huge dog growling with her fang-filled mouth so close to his family jewels, but realized a growl doesn't work as well without bared fangs, ears folded back against the skull and a menacing, rather than impish gaze. Plus, the wagging tail kinda spoiled the illusion of a savage beast.

Ally's canine vision focused on the stiffening shaft in front of her, her nostrils flaring as she took in his scent, amazed once again by how powerful this sense became when she was in this shape. A few sniffs not only told her body that there was an aroused male in the immediate vicinity, but also brought on a flood of memories and emotions that combined with her arousal to put her in a very lovey-dovey yet frisky mood.

She briefly considered taking up the classic position – on all fours with her furry rear thrust out and her tail raised, the crystal-clear signal of her need that a month earlier had pushed her brothers past several taboos and into her needy little spade. But, she remembered, her twin had worked hard making a tasty lunch while she'd slept. He had every right to lay back and relax, and she felt she had a moral obligation to help him take care of the growing problem rising from his crotch.

Deciding to work her way up, she nudged the tip of her muzzle against Shawn's sack, smiling a bit when her cold, wet nose made him gasp before flicking her tongue out. She smiled a doggy smile as she juggled her brother's marbles, noting the way he was gripping the couch cushions. Moving up, she began to trail her long tongue along the underside of her twin's shaft, feeling him shudder underneath her as her ears picked up the groans he was trying to suppress. Curious to try something a little different, she scooted over until her muzzle was poised over Shawn's now twitching member.

“Uh, Ally, you'll be careful with those teeth, right?" Shawn asked nervously as his sister's canine mouth opened, revealing a plethora of fangs and molars, all white, shiny and very, very big. Scarier still was the look in Ally's eyes that seemed to say 'Maaaaybe…'.

Even though she enjoyed the aroused-yet-terrified expressions on her brother's face, Allison had every intention of being gentle and careful. Minding her teeth, she took the head of her twin's shaft in her mouth, closing the muzzle gently around it before lowering her head. Before she knew it she'd taken the whole thing inside her, Shawn's sizable cock apparently being no match for her new, long mouth. She could feel her brother's sparse bush against her nose, the hairs tickling her a bit, although she found herself enjoying the smell.

Not having actual lips meant she couldn't properly suck her lover off, but she decided to see what a long muzzle and a longer tongue could do. She pressed her tongue against the underside of his shaft, squeezing it against the roof of her mouth as she began to rub it along its length. The spurts of pre landing in the back of her throat told her that Shawn was enjoying her improvised fellatio, which in turn motivated her to continue. Well, that and the taste.

Once she felt she'd mastered this part, Ally stretched her nimble tongue out further, past her mouth until she could just reach Shawn's sack. She started giving it little flicks, which in turn caused the rest of her tongue to undulate against her brother's cock, making the teen buck into her muzzle. After about another minute of this Ally could tell her brother was achingly hard, and feeling an ache of her own she raised her head until Shawn's cock plopped out of her mouth.

She then got up and slowly made her way forward until she was almost eye-to eye with Shawn as she stood over him. Her twin seemed a bit confused about her intentions until she lowered herself down over him, her rear now tantalizingly close to his member. Ally gently scooted her way down, whining in delight at the sensation of her eight stiff nipples dragging across her brother's smooth skin until she felt the head of his shaft bump against her little puppy-pussy.

She put her front legs over Shawn's shoulders, telling him quite clearly who's gonna be in charge for this little encounter. She had to admit to getting a little kick out of seeing her brother pinned beneath her powerful body like this, and couldn't resist the temptation of licking his neck a few times, making him squirm as he was tickled.

Wriggling her rear, Allison managed to wedge the head of her brother's cock in her eager little spade, feeling the slick opening stretch around the blunt head. She still couldn't get over how different sex felt when she was a canine, her cunny wrapping and gripping the cock entering it with muscles she didn't even poses as a human. And this being only her second time, sex as a dog still felt quite novel, especially since Shawn's rod was entering her from a different angle this time and rubbing her in a new and wonderful way.

And although she'd felt wonderfully depraved offering herself like a bitch in heat to her brother the last time they'd done this, she had to admit there were advantages to this position, not the least of which was that the two of them were looking in each other's eyes. She let out an almost steady murring sound from deep inside her as she slid backwards, fighting against the instinct to just drive her haunches down until her rump was rubbing against her brother's crotch. The bitch inside her wanted to breed, but Ally wanted to make love, so she decided to make a bit of a compromise.

Shawn let his twin set the pace, for several reasons. One was the instinctive awareness that when she changed into this sleek, powerful canine she was significantly stronger than him. The other was that even though she was being tantalizingly slow, he was loving every moment of this. Being with her this way had felt amazing the first time they did it, even though it was a desperate sort of release, something they both needed to cope with the insane situation they'd found themselves in. Mentally exhausted and worried sick about her, he'd thrown himself into the physical act to escape the frightening reality.

This time they had the house to themselves, not a care in the world, and a growing romantic love that they wanted to express physically. So he let Ally have her fun with him, sliding down as slowly as she could, her canine pussy squeezing and gripping his shaft as it swallowed it. After what seemed like forever he felt fur against the tops of his thighs and realized Ally had finally bottomed out.

Apparently happy with herself, his sister started wagging her tail, which in turn meant her rear was wriggling slightly with him still buried to the hilt inside it. A dog's temperature was somewhat higher than a humans, which meant his entire shaft was being caressed by Ally's hot, moist love-tunnel, causing Shawn's cock leak pre and make it all the messier. Although Ally had made a point of pinning his arms beneath her paws, Shawn nevertheless defied her, bringing his hands up and running them down her back and sides, feeling her back arch as he smoothed her soft glossy fur.

Ally allowed herself a moment's respite to enjoy the hard cock even now throbbing and squirting inside her, as well as the sensation of her brother's hands running along her sleek frame. Being petted felt a bit strange, similar and yet unlike to the sensation of hands gliding along smooth naked skin. Still, it felt nice in its own way, and even better when her brother's hands reached her furry rump.

It was when his fingers found the base of her tail and started to scratch that it felt amazing, a yip escaping Ally's canine throat before she could compose herself. It was like Shawn had tapped into her spine, sending delicious little jolts up its length and straight into her frazzled brain. She could feel her entire body twitch and spasm, including her well-stuffed pussy, and the sensation of her little spade rubbing itself all over her brother's rock-hard shaft certainly wasn't helping her think straight.

“Looks like this spot is even more sensitive than the one behind your ear…" Shawn gloated.

Yes. No. Shut up! Ally thought as the doggy part of her brain luxuriated in the sensation. She then remembered that she knew where Shawn was sensitive and decided to respond in kind. In a split second she'd buried her muzzle against his neck and started to flick her tongue against it until her brother surrendered and moved his hands up to her lower back. She knew dogs showed dominance by nipping one another on the neck, and she got a particular little thrill out of straight-up dominating her brother like this. Yeah, who's the bitch now?

With her dominance reasserted, Ally began to slide back and forth along her brother's shaft. Her big brown eyes lost focus as the sensations of that turgid length moving in and out of her made thinking impossible. She wasn't sure if it was her new canine anatomy, or if it was her heat filling her with a deep, instinctive need for a male that made sex so much more intense. When Shawn's cock made its way into her, she felt every delicious poke and prod against her inner walls, every contour of his cock and every throb that send more of his juices deep inside her. And when she pulled off, her canine cunny gripped and twitched around that shaft, making her lover shudder and groan as her pussy desperately tried to grab on to a knot that she knew wasn't there. But Ally loved her for trying!

Trapped under the frisky pile of fur and muscle, Shawn felt like he was in heaven as his sister worked her spade along the length of his shaft. His mind kept focusing on little nuances of her canine form that he'd missed the first time they'd made love like this. There was the heat of her, the sweet, musky scent of her fur, not the mention the feel of the soft, fluffy coat as it rubbed against him. Hearing a plaintive little whine he lifted his head to see what Ally wanted, only for her to bump the tip of her muzzle against his lips, her tongue playfully flicking against his as she 'kissed' him.

Ally felt her ears flop down as she threw herself into the moment, kissing her brother deeply while her rear bobbed up and down on his crotch. She could feel things were getting wetter back there, in spite of the grip her snatch had on her twin's shaft. She was almost writhing against Shawn now, shuddering from the sensation of her many tiny nipples rubbing against his smooth skin, the feel and heat of his body under hers. Spreading her rear paws a little, she tried her best to get her brother's entire shaft inside her, smacking her haunches against his crotch every time she slid down. She'd broken the kiss and was now panting, as needy as an actual bitch in heat, the only difference being the intelligence shining from behind her big brown eyes, even though they were glazed with lust.

Shawn had been close to the edge since the two had started, and was now close to his peak. Deciding his sister was too far gone herself to care about her little dominance game, he put both hands on her rear. He grasped her haunches, fingers burying themselves in the thick fur until they reached the powerful muscles underneath, and held on firmly as he started to buck his hips. Ally yipped a bit at first, the sudden movement snapping her out of some trance of her own, but was quick to show her approval, letting out a long, needy whine as those bright brown eyes lidded, struggling to stay focused on his.

It seemed dominance was no longer an issue as both siblings worked frantically, throwing themselves into the mating. Ally had widened her stance and braced her hind-legs against the cushions, arching her back to give her brother as much access as she could to her rear. Bizarre noises made their way out her throat as she was driven mad by the sensation of her brother's shaft sliding wetly along her spade and his head prodding and throbbing inside her. She noticed his nostrils were flaring, some instinct making him drag in the scent of their lovemaking. Ally didn't even have to bother. With her canine nose, she could smell nothing else but her twin's sweat and her heat.

She felt so close, trapped on the edge of bliss, but knew what it would take to push her over. When Shawn made love to her as a human, she would come several times during one passionate session. But this body didn't want lovemaking, or even sex. Her canine self wanted to mate, to breed, and would only be satisfied once a male had spent himself inside her. Until he did, all Ally could do was enjoy the ride, the feeling of her brother's steely cock plunging in and out of her hot little tunnel as he worked himself toward his own climax.

Shawn kept a firm grip on Ally's fluffy butt, his fingers leaving furrows in her plush fur as his hips worked in a blur, her coat muffling what would otherwise been lewd, wet smacks as he bred her doggy-pussy with every shred of strength he had. He fucked her with a wild abandon, knowing that she wanted, needed everything he could give her.

He felt his sack tighten up and his shaft throb, gritting his teeth as he prepared to shoot his load deep into Ally's welcoming cunny. Remembering that her tail seemed to be a sensitive spot for her, he grabbed it by the base and used it to hold her down as the first pulse of his seed ran up the length of his shaft before splashing deep inside her.

Either his climax, or the grip on her tail had set her off, her spade clenching around him in time to the throbbing of his shaft, greedily milking him of every drop. His eyes shot open when Ally raised her head up and howled. Her long neck arched as her delicate muzzle pointed to the ceiling as she let out a long, steady cry that rang through the house and beyond it. Shawn had heard his sister make all sorts of sex noises by now, whether it was with her mouth or her muzzle, but none were as profound, as primal as this one. The neighborhood dogs began to bark frantically, recognizing just what that howl meant, and what they were missing out on.

The grip on her tail had stopped Ally from panting, her breath frozen in her lungs as her world narrowed down to the sensation in her loins. Her heart was pounding in her chest, and she could feel the beat of her twin's through the member now lodged as deep inside her as it would go. She felt the throb of the warm shaft as she ground her spade against her brother's crotch, felt the first pulse run along it before that hot, wet feeling spread through her insides.

The last time Shawn had bred her she'd fought to keep quiet. As she felt his seed flood her, his cock gushing as it sent rope after rope of virile cum up her twitching pussy she howled with a wild abandon, a single cry that signaled the profound elation she felt to the world. It rang in her ears as she felt her pussy squeeze around the male inside it, caressing the shaft and milking it of every pearly-white drop. She could feel Shawn's seed travel further inward and flood her womb and reveled in it. She wasn't disappointed that there would be no puppies (apart from the little girl inside her that gave a sad “Aww…" at the thought) but it nevertheless thrilled her to know she would be carrying this part of her lover inside her, the very thought filling her with a profound sense of contentment.

By the time Shawn's spurts had slowed down to a trickle, Ally had come down from her peak, noting that even though she was the only dog, they were both panting! They just lay there, staring into each other's eyes, Shawn's hands now resting on Ally's back as he held her to him, although she showed no signs of wanting to get up. Ally realized the bitch in her was enjoying this, this illusion that she was 'tied' with her mate, and she didn't feel like spoiling it.

Stretched out over her twin, feeling his warmth against her even through her fur, she felt like there was nowhere else she'd rather be, and by the way Shawn was hugging her she guessed he felt the same. And since her canine cunny seemed capable of holding him inside her even after he softened, they settled down to enjoy the blissful afterglow of their mating.

*******

Since apparently doggy-Ally needed both a mating and a good night's sleep to turn back, the two had spent the rest of that day, and part of the night satisfying Allison's heat, or to be more exact, trying to. One thing Ally realized was that this little situation really seemed to kick her healthy sexual appetite into overdrive. The other thing she learned was that a sad puppy-stare was a great way for a crafty bitch to get her bone!

She'd managed to get her brother to take her doggy-style again, which was just as good as she'd remembered it, and even learned that with some careful balancing it was possible to do it missionary in this shape. After that Shawn had collapsed on the couch, claiming exhaustion, the still frisky Ally had managed to goad him into another round by sitting herself in front of the TV and innocently licking herself clean…

Still, her twin hadn't been lying about being tired, and once he gave her greedy doggy-pussy another load after some intimate spooning, he'd fallen asleep while still inside her, his face buried in her neck-fur. The next day Ally and her libido were back to her old self, and the twins spent the day just kissing and cuddling, having learned a whole new meaning to the phrase 'dog tired'…