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Special Training Session

By Cimmaron Spirit

Commission for Drewbermeister/dash007

WARNING: This story contains: red fox, fennec fox, Clydesdale mare horse, white tail deer stag, border collie, macro growth, cock growth, muscle growth, size difference, M/M, M/F, M/M/F/F, blowjob, oral sex, masturbation, vaginal sex, cunnilingus, cum inflation, domination, submission, minor destruction, cuckolding, and more. If you aren't 18, or you really don't want to read a hot story of two foxes, a horse, a dog and a deer walking into a shower room, then you better go find something else to read. Otherwise, enjoy!

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It was almost closing time at Giant Fox Gym. The sound of iron plates and steel bars clanging together was dropping, the heavy feet running on treadmills was slowly dropping away, the grunts, shouts and rather loud discussions of the customers faded away. Lockers were slammed, showers were turned off, and the conversation of work out partners was winding down as they filtered out the door.

There was a huge variety of folks that came in every day. On one end of the scale was those seeking to lose weight, improve their health, gain some confidence and fit back into old pants. Some would do it, but many may not, unfortunately, as some necessary life habits are just too hard to change. There were those who were more casual goers: already fit and healthy, slipping in for an hour or two to keep it up when they can fit it into their schedule. Then there were those who practically lived here: every day, strutting in, working on making their bodies as big as possible, pushing the limits of their strength and dexterity.

They were all welcomed, given a hand and the help they needed, the motivation and support they required.

Rebecca waved to the last couple that walked by her desk, who politely waved back as they pushed through the glass doors and left. The short fennec fox hummed to herself as she tapped away at her computer, finishing up the day's business entries on spreadsheets and programs. But her eyes kept glancing away from the computer screen back to the main, high ceilinged workout area. Five people were still here: a tall, very curvy Clydesdale mare curling large dumbbells, a muscular stag on a step machine to work his lower body, and a small, almost scrawny male border collie on a bench press, struggling with the bar pressed against his chest and the light weights on either end. But the most notable person, the largest of all of them, was a red fox, serving as a spotter for the border collie.

"There ya go Alex," the toned fox said in a booming voice, echoing through the workout space. "One more rep!"

"I...I..." the border collie whimpered, groaning as his shaky arms struggled to push the bar up. "I... can't..."

"Yes you can!" the fox said with a caring, energetic voice. "Just one more. Push yourself. One more!"

The border collie, taking a couple deep breaths, finally grunted, and with a push and growl that turned into a strained howl, he finally managed to get the bar up, extending his arms right to the max.

"Woo! Way to go Alex!" the fox said with a cheer, before grabbing the bar and placing it on the rack so it wouldn't fall. "Good job buddy!"

The border collie went limp, panting heavily. "T-thanks Andy," he said.

"That's what I'm here for," the fox said. "Take a moment, catch your breath, then wipe down the bench and hit the showers. You did good today."

A smile crossed her lips as Andy, her best personal trainer and husband, started walking toward the main desk. Her eyes followed every step, every flexing muscle, as he walked closer, the tank top straining over his chest and his shorts almost too short. It wasn't that he was a bodybuilder: far from it. But at six and a half feet tall, it was damn near impossible to find clothes that would fit him properly.

"Good job their honey," Rebecca said, as she tapped at the keyboard and finished the last entry, then shut off her computer.

"Eh, it's nothing," Andy said. "Alex has done pretty well in his first week, but he just needs a bit more motivation and confidence. But that will come in time. Anyway, got another shake?"

Rebecca slid across the floor in her rolling chair toward the mini-fridge tucked into the main desk, and reached in and grabbed a protein shake, creamy white in the plastic container, and handed it to her husband. Andy grabbed the bottle in hands that dwarfed the fennec's own, popped the top off, and began to chug the contents down.

The fennec watched as the Adam's apple bobbed up and down, swallowing the whole bottle's contents in just a few seconds. Andy finally pulled it away with a sigh, then a belch, before setting it back on the counter.

"Have I mentioned how delicious these are?" Andy remarked.

"Every time you drink one," Rebecca said. "It's been a month since I first got it for you, and you still have to say that."

"Well it's good," Andy said with a pleasant smile, before glancing up at the clock. "Oh my, look at the time."

Rebecca looked up, to see the arms on the clock pointing at 8:10. "Yep, it's that time."

Andy's smile turned from happy and cheerful to mischievous and lustful. "I think it's time to begin the special training session."

Rebecca reached into a drawer and pulled out a remote control, before tapping a couple of buttons. The first one turned off the OPEN sign next to the door. The second one made all the tall glass panes that looked out onto the street turn dark and opaque, tinted enough that no one could see in.

After all, if anyone outside saw what happened next, they might call the cops.

Or bang the doors to try to get in.

Andy was already peeling off his tight, sweaty tank top, revealing his chiseled and toned body before the windows were fully closed off.

"Hon, can I get another shake? Still feeling a bit parched," Andy said, as he tossed the shirt behind the desk.

"Of course," Rebecca said, her own mischievous smile crossing her face. "I'll met ya in the showers, okay?"

Andy leaned over the desk and gave a peck on the cheek to his wife, before sauntering off to the showers.

Andy turned the corner into the locker room, humming to himself as he peeled off his pants, revealing that he had been going commando all day. Considering the two baseballs in his fuzzy white sac and the nearly bear bottle thick sheathe and the half hard red canine cock poking out, it was understandable why he didn't bother to even try to stuff his package into underwear.

Just a few weeks ago, he wouldn't have done that. But he also wasn't six and a half feet tall a month ago, or built like a brick wall. He had always been somewhat athletic and fit, and strong enough to bench over 200 pounds. But he'd had a sudden growth spurt, out of nowhere. It almost felt like a second puberty, as he had grown almost a full nine inches since, put on over 100 pounds of muscle, and his genitals had also expanded in every dimension. The many doctors he had seen couldn't explain it. After all, it wasn't usual for a fully grown adult male to just suddenly start growing bigger in height, and especially so quickly. But they could only shrug their shoulders. His vitals were normal, if actually better than ever. He was healthier overall, and much stronger.

It wasn't just his size and muscles that had increased though; his libido had shot through the roof. Three, four times a day he had to paw off, and even then, it would be a couple rounds in bed with Rebecca every night. But even that was barely enough to sate the urges he was getting, and the fennec, bless her heart, wasn't really able to keep up with him.

And he was still getting bigger. He had an inkling of how it was happening, as it always seemed to be after a particularly good workout session, or after a round of particularly good and heavy sex. The trigger for it, he had no idea.

But he wanted more. He wanted to get bigger.

The thought of growing bigger, taller, muscular, sexier filled Andy's mind, and he let out a low, rumbling purr. But he took a deep breath. The red fox looked down to see the full length of his cock now out of his sheathe, throbbing to life.

"Not yet, buddy," Andy said under his breath, as he stuffed his pants into his locker, then snapped the lock shut. Andy, thus prepared in his natural glory, prepared for a shower.

"Andy!" Rebecca called, running up behind and into the locker room, another container of protein shake ready for the much taller fox.

Andy spun around, grinned, and hugged his wife with one hand, lifting her up easily with his newly enhanced strength. His other hand reached around the 5'4" fennec, and grabbed the bottle with it, flipping the top with his thumb, and taking a big gulp.

He nearly choked after the first mouthful and dropped Rebecca. "Ack! Damn... that was stronger than I expected!" Andy said, trying to catch his breath.

"Oh, I must have added a bit more than I should have," Rebecca replied, acting all sweet and harmless in her husband's embrace, one of her fingers tracing along the lines of his chest and abs. "Got a bit distracted with, you know..."

Andy give a small chuckle, before setting her down again. "Well, get prepared. I think we got a long night ahead of us."

As Rebecca went to her own locker and stripped down, Andy drank the rest of the protein shake. Normally it was tasty, kinda sweet with a smooth creamy taste. This time it was all those sensations, up to ten. It tasted good, of course, but really overpowering, and it took him several tries before he could finish the whole thing.

When he did finally set the bottle on the bench, Rebecca was undressed, the tiny fennec showing off her curves for Andy to see. She wasn't super model thin, nor did she have the biggest assets in the world. But her thighs and breasts were still plenty for Andy, and the way her hips bounced back and forth was perfect for her husband.

"My, my," Andy said, with a seductive grin, stepping forward and wrapping his arms around her, pulling his smaller wife against him into a tight embrace. Rebecca's breasts smooshed against the upper row of his abs; his hardening cock sandwiched between their bodies. "How did I ever get so lucky?"

"Because you have a thing for short girls?" Rebecca smirked, nuzzling against his pecs, before licking at one of his nipples.

Andy gave a little shudder, then let go of the fennec. "So, you are sure about this, right?"

Rebecca looked up, giving a smirk. "You keep asking every time. And every time it's a yes."

"Well, you know," Andy replied. "Just want to make sure you are still alright with it."

"It was my idea, silly," Rebecca said. "You know that as much as I love you, I can't keep up. So get going, big guy."

Andy's grin grew wider, and Rebecca could feel the impressive manhood throb. "And you better be coming as well."

"Right behind you," Rebecca said with a wink.

Andy let go, and turned around, letting his eleven inches of rock hard canine cock lead the way. He walked around the other corner to the showers, where hot water run against the tile floors, where the warmth and humidity of the steam washed over him, relaxing tense and sore muscles.

In the middle of the large shower area was the three other gym patrons, all nude as well, all of them soaked and wet from showers and sweating in the heat of the impromptu sauna, chatting amongst themselves. The stag was stroking his respectable seven inches with one hand, while his other rubbed over his muscles. The Clydesdale mare was still stretching, letting her massive mammaries bounce and shake with each movement. The odd one out was Alex, the smaller border collie, standing next to his boyfriend Rick, the white-tailed deer, but with his tail curled over his groin, a red blush over his face at being around a bunch of big, sexy, naked guys and gals, feeling rather outclassed.

The gym prided itself on it's rather blasé and laissez faire attitudes: while nudity was a no-no in the main workout areas, there were more private areas where wardrobe was optional. And unlike many places where they would have two sets of showers for the two sexes, here they went with one giant one, and looked the other way when more... sensual activities took place.

Everyone turned to see Andy walk in, and to a shower head of the open shower, quickly soaking himself head to foot (though he had to bend a bit to get his head under the shower), before coming up to the crowd, towering over everyone else, and Rebecca following right behind.

"Room for two more?" Andy smirked.

"Just waiting for ya, big guy," the mare, Olivia, replied

"Nice of you all to wait," the fox said, before flopping himself down on another bench that was up against the wall. The wood and steel groaned at the sudden weight added, but it held. Everyone began to gravitate toward Andy, who splayed his legs wide to allow his balls to hang free and his cock stick out.

"Alright, since we got a newbie, I'll go over the rules quick, okay?" Andy said, glancing at Alex and giving him a seductive wink. The border collie's blush only grew brighter.

"So, one at a time, I'll have some fun with ya. Girls, both of you know I like pussy, so I hope you'd been practicing and are ready for this," he said, shaking his cock while looking up to the fennec and mare with a smirk. Olivia and Rebecca could only nod, both of whom were eying the fox's cock with hungry eyes. The mare was soon rubbing herself, and the fennec was licking her lips hungrily.

He turned to the stag and canine. "Guys, I won't be sticking my dick up your ass, as I'm not that gay. Besides, I'm pretty sure neither of you could actually take it. But you'll get the chance to do whatever else you want to help get me, and yourselves, off. Paws, frotting, BJ, don't care. So long as I'm cumming by the end, you've done good. If you really don't know what I like, just ask. Got it?"

Alex gave a nervous nod of this head, while the stag, Rick, gave a grin.

"And in between your turn, feel free to do it with yourselves, or just watch, or even join in," Andy continued, sounding more like a drill sergeant than the encouraging personal trainer he was less than an hour ago. "There is plenty of fox to go around. But I will be focusing on my partner until I'm dumping my load, then I'll move onto the next one. So no barging in. Everyone's getting a chance. Got it?"

"Yes sir!" came the chorus.

"Good," Andy said, leaning back. "Now, who's first?"

Rick and Olivia were instantly trying to get Andy's attention, shouting and begging. Rebecca was quite content to wait till the end and watch the rest. But Andy's eyes soon focused on the nervous Alex, bashfully holding back.

"Alex! Come here boy," Andy boomed, making the border collie jump. The other's, with a sigh or moan of disappointment of not going first, backed away to allow the black and white furred canine come in.

"Since this is your first time, you can go first," the fox said with a smirk. "Consider this part of your confidence building exercises."

The border collie took a couple nervous steps up toward the massive fox, glancing back to Rick, who gave a grin and a thumbs up to his boyfriend.

"Go on! It's great. I promise," Rick said, giving the border collie a smack on the butt, and making the little dog give a little whimper.

Alex finally got right up to the massive fox and his dong, and the canine swallowed nervously. He was about the same height as Rebecca, and he almost looked like a doll compared to Andy, tiny and frail to the giant that was well over a foot taller than him, and outweighed him more than double.

"That's it, little guy," Andy said, his personal trainer demeanor slipping out, but with a heavy dollop of his more dominant, aggressive side that he'd already showed as he entered the shower. "Just reach out and touch it. It's not going to bite," the fox rumbled, reaching out to place his hand against the fox's back and shoving him against the thick, nearly foot long canine cock, hot, wet, and throbbing, his muzzle pressed against the tip.

Alex took a deep breath, the smell of man and sweat and musk flooding his senses, before reaching up and touching the cock in front of him. The border collie trembled and shook as he felt the heavy heartbeats of Andy reverberate through his cock, and into Alex's hand. Veins pushing blood through the entire spire of manhood, the entire tapered tip with the bulging knot throbbing and pulsing. The first drops of pre began to leak out of the fox's urethra, and Alex watched, mesmerized, as that single drop ran from the fat tip, down the pop-bottle thick dick, over the knot, almost like two softballs stuffed into his cock, and onto the ground, mixing with the dripping water and steam of the showers.

"That's it," Andy crooned, his voice a low rumble, as he rubbed Alex's back, making the border collie shudder from the heavy, forceful petting. "Just rub it. Stroke up and down."

Alex proceeded to do so, moving his hand up and down over Andy's cock. More pre began to ooze from the tip, so the border collie assumed he was doing something right. So he went a bit faster. Then lifted his other hand to join, rubbing the footlong cock up and down. His fingers just met around the thickest part of the dick. One hand slid over the tip, smearing his hand with preseed, which he then rubbed along the length, making the fat dick even more slick.

The border collie was slowly losing himself to the giant cock, his tail dropping away from his own crotch to show off his own cock. It was, at best, maybe half the size of Andy's, and much thinner, the knot on Alex's cock maybe about the size of one of Alex's closed fists, so a measly quarter of the size of Andy.

As Alex began to focus on Andy's cock, the other three were coming around to worship the massive fox: Rebecca curled herself around her husband's free hand, and squealed when his fingers found her vagina and dove in, fingering her as she rubbed her breasts and body against his bicep and shoulders. Olivia went to the side opposite Rebecca, stroking Andy's bulging calves and kissing around his lower thigh toward the sheathe and base of his cock, one hand reaching over his leg and fondling the heavy orbs hanging low. Rick stepped closer, but he was more interested in watching his boyfriend making out with Andy's cock than participating himself.

"Good boy," Andy rumbled, his attention still focused on Alex. "You like playing with toys bigger than yours, eh? Bigger guys?"

Alex could only let out a little whimper, the blush returning to his face as he continued to stroke the giant fox cock, and watching the two women grinding themselves and making out with the rest of his body.

"Yeah, of course you do. Look at Rick."

Alex glanced over to his boyfriend. Rick was stroking himself as he watched his smaller boyfriend jacking off the much, much larger fox.

"Yeah, he's pretty big, right? Tall, muscular. Pretty good-sized dick," Andy said, critiquing the stag. "Is that why you fell for him? Being a little subby bitch for a big hunk of man?"

"Y-yes," Alex stammered, as his hands moved faster and faster over Andy's cock.

"Just a little twink, eh? A bottom for those bigger than you, right? Those that are better than you."

Alex's whimpering picked up volume as Andy teased him more and more.

"Yet, there is your boyfriend. Your better. Your world. And what is he doing?" Andy asked.

The border collie was trembling, his face red yet, whines and whimpers escaping his muzzle as he was belittled by Andy. But he couldn't stop jacking off the huge cock. The musk and power were too much.

"He's being replaced, pup. By someone bigger, stronger. Better. Superior," the fox said, his voice dropping an octave, becoming more menacing, more dominate. Alex could feel the cock pulse and throb harder. The hefty balls were sloshing, churning, getting closer to the edge. The flow of pre was building up, now a constant stream of hot, clear virile fluids, running over Andy's hands and body, marking him.

"Tell me, pup. Who's better?"

Alex let out a whimpering moan, watching his boyfriend not only rubbing himself, but clearly getting off on the fact that his significant other was being dominated by Andy. Rick was being cucked by a fox that outclassed him in all but the muscle department, but that was a close, narrow victory for the stag.

"Tell me, Alex. Tell me! Who's your superior?" He pushed the border collie against his cock harder. He could feel it. The tingle. The sensation that preceded every one of the growth spurt's he had in the past month.

Good...

"Y-you..." Alex whimpered. Was... was Andy's dick even bigger than before?

"What was that?" Andy growled, his body twitching and flexing, his paws curling, claws dragging against the water-soaked tiles of the shower, his orgasm getting closer and closer.

"You!" Alex said, louder this time even as his breath was coming in ragged gasps. His own orgasm was getting close, even though he hadn't touched his own cock. He was one hundred percent focused on the fox. His fingers couldn't reach around the girth of the cock anymore. Andy was growing bigger!

"I can't hear you!" Andy bellowed, shoving the little border collie even harder against his cock, and even rubbing his body against his dick.

"You are my superior!" Alex cried out as he came, hands free, his knees going weak as his body was rocked by the most intense climax in his entire life.

"Fuck, yeah!" Andy bellowed, before turning into an indistinct roar of pleasure as his orgasm hit, the massive pulse of his cock throwing Alex off his feet and onto the floor. The fox was soon shooting long arcs of fox seed high into the air, landing all over Alex and coating him in his sperm, while much more landed with a wet splat on the floor of the shower around him. But he was staring at his body, as his muscles grew larger, gaining more definition as if he had spent every waking hour for a week in the gym, yet it took place in seconds. He could feel the balls of his feet pushing away from him on the floor, while his back slid up the wall. The bench creaked and groaned some more.

This was the biggest growth spurt yet. Where before it may have been fractions of an inch at a time, maybe an inch max, this time it had to be in multiple inches. A foot. And more.

Andy grinned, the new feeling of power and size rushing through his body.

Olivia and Rick stared, dumbfounded, as they watched the fox, who was an already amazing 6'6", now clock in at a few inches short of ten feet, having gained close to three feet in a moment. His cock, already huge, surged even longer, now rivaling the biggest stallions or elephants in porn at 24 inches long, a full two feet of canine cock, with a knot the size of a basketball. Olivia was pushed back along the floor as the fox's thigh she was wrapped around grew larger. Rebecca let out a loud moan as the two fingers in her pussy also surged larger, stretching her wider than she had expected.

Even before the last dribbles of his cum had drizzled over the coated border collie, Andy could feel the urge, the drive, for more. More growth. More size. More sex. More everything.

He looked up, and with a hungry grin, he had reached up to pick up Olivia off his leg, and placing her on his lap, sitting her on his fat cock, before pushing his muzzle against one of her large, perky nipples, nibbling and sucking. His other hand reached and grabbed her ass, digging his claws into the supple fur and well muscled backend, then using his newly found leverage to rub Olivia's entire lower body along his cock.

The Clydesdale mare was still trying to comprehend what had just happened. She knew that Andy used to be smaller, well over a foot shorter than her, but actually seeing him grow in front of her eyes was still a shock. The added stimulation of the thick, heady musk of man and sex that seemed to pour off the fox, as well as Andy's well practiced tongue on her nipples, his massive hand groping and kneading her butt like it was dough, and the sensation of her sensitive pussy along the long, throbbing cock that she had taken several times before (though never this long or thick!) quickly overwhelmed her senses.

"Mmm, such a pretty gal," Andy remarked, pulling his muzzle from her nipple long enough to complement her. "Big, strong, independent woman."

Olivia could only let out a loud gasp and whinny as Andy continued to assault her body's pleasure centres.

"Still single too," Andy remarked, before running his long, thick tongue along her six pack abs, over her tits, pausing only to lap at her nipples, before continuing right up to her neck to the bottom of her muzzle. "I'd be surprised, considering how beautiful you are."

The mare moaned, barely able to comprehend the words that Andy said as he rubbed his thick cock against her pussy hard, and could feel her juices leaking out to lubricate the fat, nearly telephone pole thick cock grinding back and forth between her thighs.

"Maybe you're too big for any guy, huh?" Andy said. "No. Not too big. Too demanding. A woman like you would only want the best. The biggest. The most powerful."

"Big... best... yes..." Olivia moaned, biting her lip.

"I'm sure you've taken many a stallion to your bed, but were left wanting more, eh?" Andy smirked.

"F-fuck, yes..." the mare whimpered as she felt the huge cock being pulled away, the space between her thighs left empty. Begging to be filled again.

"Because even the biggest stud out there is nothing compared to me. Right?"

Olivia glanced down at the thick, massive cock jutting from Andy's groin. Maybe it was the musk, maybe it was her own lusts, her own size-queen fantasies... but she wanted that in her so bad...

"Oh fuck..." Olivia moaned. "You are like no one I've ever had before!"

"Nothing compares to me!" Andy smirked.

"Then fuck me, stud!" Olivia cried out. "Fill me with that fat dick!"

Andy needed no further instructions, before pushing her down onto his cock.

The Clydesdale let out an ear-piercing whinny as her folds was spread open, wide, wider than anything she had felt before.

She should have been nearly torn apart by that huge log, but it felt so good. She whined, she moaned, she writhed, she groaned as Andy proceeded to fuck her, using her as little more than a living fleshlight. Holding onto her already wide hips and lifting Olivia up and down his cock. The thick manhood stretched her stomach, rounding out the six pack to take the full size and shape of the canine cock, the huge tapered dong sliding in and out with apparent ease.

Andy grunted, before getting off the bench, and laying Olivia on the floor. Now in a vanilla missionary position, Andy wasted no time, driving his cock deep and hard into Olivia. Each thrust made her breasts bounce and jiggle, and each deep penetration made the mare gasp, whinny, moan, a jumble of incoherent words and sounds coming from her mouth.

"Look at you," Andy grunted as he thrust his cock in and out of her pussy, steadily picking up speed. "The very model of a strong woman: muscular, able to punch any lesser guy into the pavement. At one time, you could have broken me, destroyed me. Yet, here you are now, screaming and moaning over my fat cock."

Olivia responded by screaming and moaning over his fat cock. "Oh, fuck. Yes! Fuck me!"

"Fuck, I can't believe you let yourself turn into this," Andy said, with a melodramatic click of his tongue. "Little better than a whore. Just begging to be bred by a real man."

"Yes... fill me. Bred me!" Olivia gasped.

Andy's smirk turned even wider, especially as he felt his body surge in size again as his second climax approached. He could see his cock take up more and more of her belly. It would be next to impossible to get his knot into her now, as more and more inches of his fat cock failed to enter her already stretched and engorged vagina, the tip smashing against her walls, unable to advance any deeper into her womb.

"Oh, you will never be able to have sex with anyone again," Andy growled, as his body surged out larger and larger, his body reaching its limit.

"Because even if you aren't fucking broken by my fat dick at the end of this..."

Andy grunted, and growled, before letting out a howl of dominance and power that made even the windows of the gym outside the shower rattle and vibrate deep into the foundations of the building.

"...You'll be begging for my cock!"

The first rope of fox cum filled Olivia, and bloated her belly. The second made it stretch even more. And there was more to come. Within moments, all the years of work undertaken to get her six pack and muscles was washed away, and it looked like she was several months pregnant.

But even before Andy was finished, he had to pull out. Inch after inch of fox cock was pulled out, growing bigger and thicker by the second, along with the rest of the fox. The fat length was pulled out, and he slammed it onto the shower tiles beside Olivia. It was nearly as big as the mare's entire upper body, and still gushing gallons of virile fox seed with seemingly no limit. The boulders that hung between his legs seemed to be never ending.

Now, even on his hands and knees over Olivia, Andy could feel his back pushing up against the roof of the shower room. He panted, groaning as the tiles around him began to crack from the sheer size of the fox, his ears pushing up against the far wall while his paws crushed the bench he had been setting on, smashing into the wall, and turning the steel lockers of the adjacent changing room into scrap metal. The ceiling tiles began to break and pop out of place, and the metal beams that had held them up began to bend and snap around his mountainous back, feet upon feet, dozens upon hundreds of pounds, pouring onto his body all at once. It felt so good, to grow to stretch... though it was getting way too claustrophobic for him...

He shuffled, trying to find room. But every time he found another square foot of space to get into, he suddenly needed two more. He was growing too fast to fit.

Well then, time to fix that.

"RAAAWWWRRR!" Andy howled, as he stood up, breaking through the roof of the shower and into the second floor and the more private rooms and studios for yoga classes and the like. But now it was all demolished to make room for a 30-foot-tall, and growing, red fox. Pipes burst, the heat and humidity of the shower dissipating through the rest of the building and making a sudden chill descend into the showers. Gallons of water poured out, washing over Andy and his worshippers, cleaning away the emissions of the mammoth vulpine into clogged drains.

Andy, now free of the constraints of the first floor and the gym showers sat down, smashing the locker room under his ass, the steel lockers no match to the fox that had to be weighing over ten tons now

However, no one paid much attention to the damage that was being caused. By now Rick was at Andy's cock, growing past ten feet in length, and licking the wet head, scooping up the copious seed that still oozed out to drink down or rub against his body or the cock. Alex was clinging to one of Andy's footpaws, nearly his full size, and was licking and rubbing himself against the thick leathery pads. Rebecca had pushed herself into the space where the fox's cock met his balls, and was eagerly licking and rubbing herself against the mammoth testicles. Even Olivia, panting and exhausted from the rough fuck, her belly still bloated, her pussy gaping wide and leaking cum, had rolled over to join Rebecca to worship his kit makers.

Andy panted heavily, feeling his chest rise and fall with each breath of his newly enlarged body. Every part of him had grown larger: biceps and triceps, calves and thighs, abs and pecs. Everything was so much bigger, more defined. Veins had bulged and popped, visible even under his fur. Each movement, each twitch and shudder, felt like an earthquake to those below him.

And his cock and balls were still rock hard, throbbing, drooling pre and cum from the tip in loads that would have dwarfed any normal man. Like the stag that was still licking the tip of his sensitive manhood.

"Rick," Andy rumbled. "I think it's your turn. But I can see you're already doing what you love most, eh? Worshipping cock, huh?"

The stag, soaked in water and cum, and drunk on the fox's potent musk, was making out with the head of Andy's cock like he would a lover, responded only by pushing his tongue into the urethra, making Andy rumble in approval.

Andy gave the deer a few more minutes to kiss and worship the head of his cock. But at his size, despite the electric tingles and shocks of pleasure, the fox realized it wouldn't be enough. So he reached down, easily picking up the 6'2" tall deer like if he was a toy, and then pushing him face first against the fox cock that was almost double Rick's size.

"I'm sure Alex has never seen this side of you, eh?" Andy said, as he started rubbing the deer over his cock, so big and thick around now that even Andy couldn't get his fingers to touch each other around the girth. "At home, at the gym, in public, you are the big guy, aren't you? Always the center of attention. Always the top."

Andy could feel the border collie at his paws slow down his worshipping to look up, to see how Rick was being used, and just how blissful and lust-drunk the stag was. Andy could also feel Alex's cock throb against the paws as he watched his boyfriend being used like this.

"Yet, you know that doesn't really fit you, does it?" Andy taunted, feeling the stag's cock rub up against his own, practically begging to cum already. "You want a bigger man, a better man to lord over you."

Rick couldn't really respond even if he wanted to, so engrossed at rubbing and stroking and being used to get off the giant.

"Ever since I started growing, you've wanted to be with me. Ever since we started 'special training,' you've been little more than a slut for my cock, haven't you?"

The stag let out a moan, partially from the words of the fox, but more so as Andy was picking up speed, mashing Rick against his cock harder and harder.

"You were pretty damn good and sucking my dick too. Did you know that Alex? That your boyfriend could suck dick with the best chicks and whores in this town?" Andy smirked, looking down at the border collie, his inhibitions having been stripped away through the evening. The personal trainer in him was proud that he had helped to break past Alex's shyness and lack of confidence. The sex crazed monster was even more pleased that he had another worshipper.

"I bet he never did suck your dick before, did he? Bet he said he was too manly, or too much of a top. Or some bullshit like that."

Andy went harder and harder. Rick had already cum at least once, the white goo from his cock only giving a tiny amount of extra lube to try to counteract the friction of the fox jacking off his own cock with the exhausted and nearly limp deer in hand. The white-tailed deer's antlers dragging against his cock up and down did little more than add another point of stimulation and pleasure.

Andy rumbled. He could feel his body start to grow again. His head pushing higher, the floor under him cracking and breaking under the increased weight. Of the deer shrinking smaller and smaller in his hands and against his thickening cock.

A malevolent smile crossed his face.

"Well, next time, you'll know better." Andy's speed picked up again: the deer's hooves kept smashing against his engorged knot with each downward thrust, and the antlers tickled the tapered red tip every time it went up. "You'll know that Rick is as much of a bottom as you are." Andy growled, curling his toes, pushing Alex into his pawpads. "That he'll suck you off. That he's a cum hungry slut." He could feel Rebecca and Olivia at his balls doubling their efforts as he felt them lift, nearly ready to blow a third time. "That you'll both...urgh... readily lift your tails for someone...ahhh!... bigger and better than you!"

Andy was on the verge, he closed his eyes, and with a howl that shattered every pane of glass in the gym, and everyone in cars and buildings in the surrounding block, Andy came again.

The growth spurt was massive. He doubled in height in an instant. He fell backwards, smashing through the roof above him, then fell backwards, demolishing the far wall of the locker room and landing in the parking lot, his head crushing three cars. His expanding paws knocked Alex out of the way to land between the two legs of the fox. The border collies was left to watch in lust fueled amazement as they continued pushing the other way, crashing through the cinder block walls of the shower into the gym proper, knocking over weight racks, equipment and benches like they were little wooden figures and not iron and steel. His muscles bulged out, making Andy look like the biggest bodybuilder in the world, but wilder and more monstrous. A god amongst men.

Andy let go of his cock, now well over thirty feet long and growing even fast than Andy was, letting Rick fall to the expanding sheathe below as his already gargantuan cock surged larger and larger. Each shot of his cum arced high into the air like a water fountain, landing with a heavy _splat_over neighboring buildings and the street, massive drops coating any unfortunate passersby in his seed, soaking through any layers of clothes. Rick, sore and aching from his rough encounter with the cock, still crawled up to lick at the bulbous knot.

It never seemed to end, his ejaculate going on and on and on, painting everything in the darkened neighborhood white.

But Andy wasn't done yet. Panting heavily, he reached into the spot just under his balls, each the size of a minivan, and picked out both Olivia and Rebecca. The mare, still filled with gallons of fox seed, was set down at the base of Andy's cock next to Rick where she could resume the worship of the still throbbing cock. Moments later, Alex would climb over the rubble and the mountain that Andy had become, to join the other three to worship the fat dick.

Rebecca, however, was lifted up toward Andy's face.

"Well, I think you are responsible for this," Andy said, his voice a booming baritone.

"What? Little ol' me?" Rebecca said as sweetly as she could. "Why would you say that?"

Andy smirked. "Because I know you too well, sweety." A giant finger reached up and pressed her down against his palm until it was replaced by Andy's tongue, as long as a semi-trailer. The wet tongue rubbed all over her body; from her paws, up her thighs, over her belly, over both of her breasts and finally her face, coating her in his saliva. The tongue pulled down a bit, the massive tip spreading her legs wide so he could lick at her pussy, savoring the delicate taste of her juices on his tongue.

That alone was enough to make Rebecca orgasm, shuddering and crying out as Andy's tongue licked over her folds and her lower body, nearly the equivalent of using a pile driver to hammer in a nail. But it worked for the titanic Andy, and the ant-like Rebecca, who quickly came a second time.

Finally their orgasm's ended, and even Andy's libido was settled, his massive cock flopping down, still being licked and stroked and massaged by the other three gym patrons, worshipped by the three founding members of the Cult of Andy. Sirens were blaring, helicopters were buzzing around, and spotlights illuminated the giant fox sitting in the ruins of the appropriately named Giant Fox Gym.

"Hmm, I think we got company," Andy rumbled, looking around to see policemen, media reporters, and hazmat crews approaching.

"Must be a slow news day," Rebecca chuckled, nestling into her macro husband's hand.

"Better be some good ratings, that's for sure," Andy smirked. "Because tomorrow we're going to have to break those too."

<> <> <>

Hello, you've reached Giant Fox Gym. No one is able to get to phone right now, so if you can leave a message and your phone number, either Rebecca or Andy will get back to you. Thank you!

*BEEP!*

"Hey Rebecca, Cimmaron here. You know, the guy you talked with about testing the protein shake. Well, I can see from the news that the accelerated testing that we asked from you was a great success! Believe me, I got investors knocking down my doors like crazy right now.

"I'll be sending a team from CIMIndustries to meet with you tomorrow to go over the damage and the costs to rebuild your gym. I will also be making an offer for both of you to join our company as a part-time product testers. After all, why should Andy get all the fun, am I right? Haha.

"As I promised, we will be covering the full costs of the repair, with an extra 15% on top. Thank you very much for undertaking this product test for us!"

*BEEP!