Spreading Transformation REDUX - Part 4 - Mates

Story by poweron on SoFurry

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#4 of Spreading Transformation REDUX

Part 4! James and Claire finally have at it in the most messy way possible. Can they hang onto their humanity through the lust?

Lots of good stuff planned for future parts!

Hope you guys enjoy and as always please leave any comments/feedback below!


Part 4 - Mates

Claire was lost. Lost in her own overwhelming lust. After failing to find the release her body so desperately needed with James, her mind had all but shut down. It was overwhelmed by her bodies desire, wiping all all but her most carnal heat-driven urges. Claire was less than a faint whisper, only the wolf remained. She growled and moaned lowly, her body driven to mate, but with no suitors available to meet her needs her hands could only slowly delve into her thrumming depths. Her body trying desperately to find a satisfaction it could not achieve alone. The fires deep in her burned dim but unrelenting.

Her body laid prone at the foot of her bed, the sharp rays of moonlight filtering through the cum-splattered glass brought her curves into sharp relief. Her mountainous bosom rising and falling with her slow ministrations, their dark soft nipples only eliciting the smallest beads of creamy white milk onto her broad areola. Claire's hands were too occupied slowly massaging her wet pussies folds to pay attention to her achingly full breasts. The wolf wanted relief from this heat and it had already tried its breasts with James and his small suckling mouth. Although the feeling of relieving the pressure in her tits, the feeling of her hot liquid spurting through her nipples got her so very close, it wasn't close enough. The erogenous zones on her body were expansive, almost any touch of her skin would send a electric shock into her still weakly leaking pussy, temporarily stoking the heat inside, but it was short lived. Claire growled in frustration that couldn't find release alone. She had almost climbed the familiar peaks of orgasm many times only to have the heat die down back to a simmer again despite her best efforts.

James's nostrils flared as he took in the her musk. His massive lungs breathing the strong scent deeply. Its distinct flavor finding its way onto his thick tongue as he read the pheromones. He could sense her heat, her fertility. Pre cascaded out of the gulping urethra on the end of his quickly re-engorging penis. His own musky lubricant cascaded down the ridges of his flaring head and long shaft, splatting onto the floor with more and more frequency. He could feel the pre's hot liquid streaming over his achingly full balls, their own tremendous heat thrumming between his legs.

Separating himself from the abused wall with some effort James's body staggered forward. His large chestnut butt cheeks slapping together, their tight flesh jiggling slightly as they closed over his sensitive pucker. His balls pressingly heavily in his sack as they smacked his thighs, his hard two foot penis straining as it splattered pre in front of him, paving his way with a trail of hot dripping lubricant. Thick sinewy muscles moved under his furry skin as his large black hoofs clattering on the juice-soaked floor. His bodies priority to make its way to Claire as quickly as possible.

Claire's lust glazed eyes were half-closed, lost in the seemingly never-ending heat clouding her thoughts. All she could see through her shaded eyes was the moonlight on her throbbing tits, their epic rise obscuring the large horse making its way towards her. Her breasts shuddered with milk as they swelled little by little, stretching her dark bosom's skin even tighter as they quivered with every touch of her paws on her sensitive wet lower lips. As her paws serviced the throbbing ache deep in her loins her strong arms pressed against the sides of engorged mammaries, further deepening her huge cleavage. She alternated her thick furry legs together, twisting as they covering her wetness, her inner thighs pushing hard against her mound and her paws sunk deeper into herself.

Thats how James found her, her legs twisted over her delving hands and pussy. A small steady trickle of her hot juices flowed out from between her legs as she made low growls and moans. She still didn't notice his presence even as his throbbing shaft cast a long shadow on her writhing form. Drops of his hot leaking pre dripped onto her thighs. Her body shuddered as they soaked into her fur but was otherwise unmoved, her legs continued their slow grinding in sync with her delving paws. James shook with anticipation, the flow of pre leaking down the engorged head of his penis increasing, his body urging him on, urging him to mate.

He crouched down, his huge body looming over her. His breaths were speeding up as he inhaled her scent. He was so close to the source now... James's large sac came to a rest on the floor, its contents shifting under its tight black skin. His rigid throbbing length hovered over her. Its straining column just inches from her canine legs. With thick-fingered hands he grabbed her padded feet, careful to avoid the vicious claws adorning each of her toes and untangled her legs, pulling them apart in the process.

Claire finally noticed. She bucked as her pussy was opened to the air again, freed from under her grinding thighs, the cool air licking her insides. Her hands still prying into her depths as the simmering heat deep inside her began to enflame. Finally becoming aware of the male looming over her, his figure a blurry shadow in her lust-glazed eyes, barely visible over her rising bosom. He didn't smell like her kind. But she didn't care, he was male and his strong sex musk filled her nose. Should could tell even across species that he was healthy, virile and ready to mate. She didnt resist, her legs were a poor fill in for a real lover. Growling with desire, she spread her legs wide, the males grip on her feet tightening but offering no resistance. She opened her wet quivering mound with her thick hands as she thrust her hips into the air as best she could, inviting him inside.

James's eyes widened and his mouth began frothing with animalistic lust as he saw her soaked pussy spread. Her thick lips winking in anticipation her clawed hands pulling at her labia, trying desperately to keep herself open him. Her soaking inner walls pulsed with increased urgency as her pussy began to leak in earnest, its small trickle becoming a small stream of her juices.

Large nostrils flaring he positioned his body, his hands pulling her legs even wider to allow him access to the engorged black lips of her pussy. His straining shaft was made of concrete as he was forced to release her right leg to guide himself to her waiting gateway. His hand pushed down on pulsing column as he guided it to her sopping passageway. It was made difficult by the copious pre that had poured down his penis, its length wet and slick and uncooperatively buoyant as he tried to steer it downward. He got in closer, his balls dragging across the floor as the slightly doming head of his cock skimmed the wolfs nether lips. Her labia sucking and grabbing at him as he struggled to position himself, unwittingly teasing her as his head dragged across her pussy, driving her wild as she struggled to thrust her hips to meet him. "Arrrwllllllll......rrrghhhhh" she grunted and moaned in frustration, she wanted to mate, wanted to mate NOW.

James was straddling her now, his massive frame supported by one heavily-muscled arm as he used the other to guide himself. His body shaking with desire and anticipation as his rod clumsily smacked into Claires thighs and ass. "NAAAYYYYYYY!!!" he roared in frustration as he thrust and more frantically, blindly searching for her opening. His nostrils flaring as his body was driven harder by the uncontrollable urge to mate. Claire's hands were too occupied trying to steady herself and keep her slavering labia parted to help, not that she could see past her breasts. She could feel his enormous pre-drenched head prodding her as she tried to reposition her hips to meet him, only to have James recalibrate to her previous position. Then finally, their building sexual frustration building, with one large thrust and a audible "squelch" he was in. Their vision went white, the pleasure overwhelming their senses as James finally sunk himself deep inside of her, pushing her open. Their mouthes gaped as their eyes rolled backwards into their heads. Their mouths moved wordlessly, unable to form even an animalistic grunt or growl. Their joining sending numbing electricity to all their nerves, their bodies convulsing.

As the searing pleasure coursed through their bodies James's one supporting arm gave way, causing him to collapse onto Claire. His substantial weight resting against her leaking tits, her nipples pushing hard into his twitching pecs as they came face to face. As they looked at each other, there was no glint of recognition in their eyes, their joining wiping away any residue of their rational minds. Predator and prey, carnivore and herbivore, the one thing they shared was desire. They needed to mate, their eyes feral and wild.

James quickly regained his composure, his throbbing balls and cock demanding release, as his instincts guided him. He raised himself back up, this time on both large arms, his thick nails digging into the relatively soft wood floor. "Whinnniieeeee" he moaned as he bucked and began thrust into her, slowly at first. His huge cock struggled to part her virginal love canal as it sped up, pushing wave after wave of their combined juices out of her straining pussy's tight opening with obscene wet splashes. Claire's labia clutched at him as the wet heaving inner walls gripped and milked his girth. James could feel the resistance to his size and it only spurred him on. "Hurrr.....nnngghhh..." he grunted as he pushed deeper and deeper with every heavy thrust, forcing inch upon inch of his manhood to disappear into her lupine pussy.

Claire thrust herself onto him in turn, her sexual plateau was at an end as she came alive underneath him. Her hands grabbed handfuls of the fur on his back as her claws raked across his skin. Using him as leverage she pushed herself onto him with ferocity. He was stretching her with every thrust, she reveled in the fullness, it was an ecstasy the wolf had never known and she had to have more. The sensitive nerves in her pussy pushed her pleasure higher and higher she leaked a river of steaming hot juices out of herself. Her raging clit dragged along the top of his slick throbbing length as he thrust in and out of her. When pushed back into her she felt so full, so complete. As she was taken by the horse her overfull tits leaked white rivers down her cleavage, her black nipples straining, more engorged and full than they ever had been. Every thrust into her he would go a little deeper, causing her to yowl and moan uncontrollably as electricity arced through her throbbing nipples. They erupted like geysers, spraying his chest with streams of her creamy milk before splashing back down onto her heaving body, drenching her fur.

Unbeknownst to Claire she had taken less than half of James's length. His throbbing medial ring not yet passing her spasming labia. James was undeterred, he thrust faster and faster, pushing himself into her with heat-driven purpose. Her claws were drawing small rivulets of blood from his broad back as he pushed deeper, he was too overwhelmed with instinct and pleasure to notice the pain. When he pulled backwards her pussy moved with him, only reluctantly letting go as air got between her inner walls and his tool, breaking the seal, causing a torrent of backed-up love juices to flood out onto the floor. The additional inches of himself were getting harder to push into her. James could feel her bodies resistance but his instincts told him to hilt. The rush of equine hormones from his throbbing balls into his hotly pumping blood was instructing him to keep her under control so she would bear many foals, no rivals could or would challenge him. His instincts didnt account for a species mismatch and there wasnt enough of James left to say any different. So he pushed.

"Aaaaaaarrrrrrwwwllllll" Claire yowled as his median ring finally pushed against her madly throbbing nether lips. Drool was dripping out of the sides her muzzle as she panted hard, her wide tongue rolling out of her mouth. Her fingers dug into his back as his medial ring rubbed against her hyper-sensitive clit. Almost sixteen inches of James was inside of her now. His head flaring as it finally reached her spongy cervix. His balls dragged across the floor gaining speed with each thrust before slapping her ass, their virile contents heaving. He still had a good four inches of himself he could not get fully inside of her. His desire to hilt making him thrusts so hard he dragged her heavy body a few inches across the floor, his cock's head forcing its way into her ovulating and fertile uterus.

They were getting close, Claire's ministrations sped up, her pussy madly milking his rigid length. "Hurrrr....arrhhh...hurrr...nnnnghhhh..." was all she could grunt out as her immensely strong walls rippled up and down his length, her own substantial heat mixing with his making her pussy an inferno. James's balls pulled up towards his crotch as his head flared deep inside of her, stretching her insides even more as it did its best to seal the entrance to her cervix. Claire's breasts jiggled and leaked copious amounts of milk as she wrapped her legs around James's lower back, using their strength to raise her ass off of the ground. Her fingers gripping his back tightly as she pulled herself into him as hard as she could. Their thrusts quickening, becoming frantic as they edged closer to release.

Then it happened, James saw stars as he reared his head, gritting huge flat teeth. His balls pulled tight to his crotch pushing a hot column of his cum up his engorged urethra. He could feel it traveling up his two foot length, making his length swell even further, Claire's tight walls gripping him hard. "NEEEIIIIIGHHHHHHHHHH!!!!" he roared long and hard as he erupted into Claire's fertile pussy. His arms and legs shuddering as his balls convulsed between his thighs. His cock powerfully pushing rope after rope of his jism deep inside of her, all his senses went numb, he couldnt see or hear or feel. All he knew was ecstasy.

Claire felt him getting close, his balls pulling up to his deep-set crotch as she lifted herself against him, her body shaking in anticipation. Her breaths quickening as she felt him swell inside of her. "nnnnnnaaaaARRRRRHHHHHHHH!!!" she screamed through sharp canine teeth as she was stretched even larger, his flaring head pushing her cervix open. She felt him coming, her whole body tensed as she felt him start filling her with his scalding hot cum, whatever parts of her werent filled with his cock were now filled with his jism. Her fertile womb was being filled with everything he could muster. All her muscles pulled taught as she threw her head backwards as she finally came. "RARRHHHHHARRRR!!!!" she roared as her pussy clamped down on her horse lover, her juices boiling in her pussy, mixing with his virile cum, its mixture splashing out between them as her love canal was saturated. The orgasm washing over her body, causing her to lose all control.

James fell on-top of Claire again as the orgasm washed over them, their legs twitching and kicking under them, their furry bodies weakly grinding against each other. If Claire's body wasnt so strong and well-built he would have crushed her, his equine weight immense. James's balls twitching between his legs as they pushed smaller and smaller spurts of his semen deep inside of her. His cock still impossibly hard as it throbbed increasingly dryly. Claire moaned, unable to control her body as the orgasm still washed over her. James's broad chest mashing against her breasts only made it worse as her sensitive nipples pulsed, sending shocks into her still convulsing pussy. Her insides were so full, she couldnt...she couldnt.... Any thought she was able to hang onto was quickly washed away as James weakly pumped his still-erect cock inside of her. They laid there like that, collapsed in sexual bliss, for hours, unable to gain enough of their faculties to separate.


After what seemed like eternity James came to enough to move. He managed to roll off of Claire with a wet "shhhloccck" as his cock pulled out of her deep love canal. Globs of his cum and her juices poured out of her, like uncorking a bottle. Her breathing calmed slightly, no longer constrained by the immense weight of him on her body. Claire convulsed lightly as the last aftershocks of their orgasm still washed over her. James laid there next to Claire at the foot of her bed for a moment, staring at the ceiling. His bodies heat finally satiated allowing his cognitive abilities to return, if only a little at first.

After a couple of failed tries he managed to flip himself over again, his hands finding purchase on the juice-soaked floor as his hoofs slipped and finally grabbed hold behind him. His cock hung semi-erect between his legs, drenched with their drying juices, its tip almost touching the floor as he struggled to get to his feet. Carefully he brought himself up, relying on his hoofs to anchor him on the slick floor, his weight shifting onto his legs. With a large huff he righted himself, his legs shaking slightly as he straightened his back, his head rearing up.

He took a few steps forward, and then a few more, his hoofs clacking wetly against the floor. He didnt know where he was going, but he felt compelled to move..he couldnt quite remember why. He was still unsure of himself, without his instincts to guide him his rational brain had no experience piloting this body that he now possessed. James almost reached the door but his right hoof slipped sideways on the floor in a pool of his own cum. He staggered backwards, his body becoming unbalanced as his immense torso fell backwards. His legs kicking powerfully under him he stumbled backwards. He tried and failed to catch himself as he lost ground, falling uncontrolled. Finally the angle of his body became too extreme and he fell in earnest. His breath caught as his body was caught by a soft if not thoroughly soaked mattress. Breathing hard he sat dumbfounded on the edge of the bed. His broad ass cheeks sunk deeply into the wet sheets as his balls pendulously hung over the edge.

As he sat there his faculties began to become his own once more. "Wha....what happened..." James muttered as he rubbed his temples with his thick hands. He looked down and saw himself once again. It was impossible, he couldnt..this wasnt... His limp cock was almost fully retracted into his thick sheath, its flat head peeking out of its fleshy home. His hands came down from his head and traced the outline of his sheath. His fingers pulling at the flesh, it was surprisingly springy. He nickered unconsciously as he explored himself. Thickly nailed fingers tracing his six-pack stomach and his manhood, they caressed the tight skin around his balls...

His mind began to be assaulted with animalistic desire once more. His hands delving into his hot damp sheath, coaxing and squeezing his quickly engorging cock. "Unnnghhh...feels so...feels so gooooddd" he moaned. He was growing much too fast, his heart pumping fast in his ears. "Nnnnghhh...nooo...I cant...." he gasped as he attempted to push his cock back down, his thick hands only making it worse. He wasnt even fully erect and he had a log of cock flesh under his hands that was easily a foot and a half long. He pushed at its head, trying to force it down while he nickered from the stimulation.

While he was playing with himself he was too unaware to notice that his sister was on her feet again. Her voluptuous lupine body undergoing the same struggle as James had just encountered himself, she was having a hard time getting up, getting her body to listen to her brain. Finally getting to her feet her deep vagina emptied itself as she stood. A cascade of cum splatting onto the floor, her hands prying at herself, helping her to release the overflow. Her thickly clawed toes finding purchase much easier on the soaked floor as her natural nimbleness worked in her favor. She glanced around the room, taking in her surroundings, her mind just starting to come back to her. Her eyes found him almost immediately, just a few feet away on the bed, his cock standing to attention under his struggling hands. Her crotch erupted into a waterfall of juices almost instantly as she gazed at his engorging rod, the heat in her loins rekindled. Her pussy washing the remaining cum out of her love channel, as her wetness flowed down her legs in steaming rivers.

James heard her moving and looked up only to find her at the foot of the bed, her gigantic tits leaking down her toned body as her pussy throbbed visibly between her legs.

"Nnnnn.....nnnnooooooo sis" he stammered through the increasing lust-filled fog. "You have to...stop...I wont be able to..." he managed to choke out. "to to...oh....god...oooooooh...you...smell...smell...goooooodddd....nnnnnaaaayyyyyyy!!!" he cried as he breathed her in, his cock becoming fully erect under his hands as his flow of pre began to resume.

Claire's wasted no time as she almost pounced on him with a playful growl. "Grrrr....so big...." she moaned as she guided his rock hard shaft to her thick vaginal lips, she was too impatient to have another aiming incident again. As she smothering her pussies slavering lips with his pre she was satisfied with her guidance as she pushed her body onto him. Gasping, her thick walls gripped at his cock, adding his heat to her own. She had an easier time pushing him into herself the second time, her pussy still tight, but easier. Soon he as deep into her as she could go, his throbbing head meeting her cervix as several inches of him protruded from her leaking lips.

Collapsing forward onto James's chest, her breasts were leaking all over him as they smashed into his broad muscled torso. They began to hump in earnest, slowly at first and then picking up speed. "Aaaarrwwlllllll!!!!!" Claire yowled as she was stretched "Urhhghh...tooo bigggggg!" she huffed between moans and growls of pleasure. Her juices flowing all over his crotch. Yet she persisted, grinding her body against his heat with everything she had. She felt him throbbing inside her, his domed head flaring bigger, driving her wild. Her hands gripping her heaving bosom as she rode his pole with abandon.

James was working himself into a sexual frenzy. Thick foam forming on his lips as his eyes rolling wildly in his head. Any and all parts of James that he had reclaimed were wiped clean. The horses thoughts were too strong and too primal for James to fight, he was too weak from the constant assault. He would take his mate. He felt his huge balls pull up towards his body as a column of red-hot cum climbed up his two foot long horse shaft. Finally it reached his obscenely flaring head buried deep in his sister, his head swelling even further as he began to come violently. Rope after rope of his horse cum pushed deep into her aching pussy as his cock pushed against spongy cervix, filling her uterus once more.

"NNNNNAAAAYYYY!!!" he bellowed as his huge penis saturated his sister with white sticky cum. He pulled her tightly against himself, his muscles bulging in sexual release. With hardly a moments passing his balls drew up towards his body as he came again. After the third time her vagina could hold no more and it back-flowed out of her thick heaving lips with a fury, splattering onto the floor.

Claire maintained her grip on her breasts through it all. Her hands squeezed her nipples as hard as she could, releasing fresh new torrents of her hot cream past her throbbing nipples as he came. James grip on her tightened as he pressed her deeper onto him, her eyes rolled into the back of her head, her canine tongue rolled out of the side of her mouth. He came again and again into her, a relentless beast built for sex. But so was she. Only four inches of him remained outside of her now. Her vagina was going crazy as it sucked and pried at the meat filling its every cavity and crevice. Splats of their combined juices and jism cascaded onto the floor and streamed down their legs.

Following her brothers lead, Claire was coming too. She thrashed as her body tensed, all her muscles hardening at once as she orgasmed. While it washed over her she felt an immense pressure on her stomach as new sets of nipples formed on her furry stomach below her breasts. Her vision turning white as she continued to buck and drive her body on against James's gargantuan convulsing shaft. Her back cracked loudly as she grew even taller, her body becoming more massive and feral, her teeth extending, her growing canines outpacing her mouth. Breast flesh began pushing out behind her new nipples forming three rows of teats below her main pair. Their sensitive flesh rubbed against one another as they too became swollen with milk, settling only a little smaller than her original pair. She had lost complete control of her body, it was no longer just an orgasm, but a frenzy of heat.

"GARRRGHHHHHH" she roared more deeply and animalistically than ever had before. Her body thrashed and heaved and convulsed animalistically as she lactated from all eight of her breasts. Her body growing to almost seven feet tall, almost matching James. Her pussy growing enough to finally fully hilt herself on James's huge tool, her body fully entwined with his.

James not to be outdone was growing as well as he came. His muscles tensing as his frame grew. His cock thickening deep in Claire as he approached eight feet tall. His equine features becoming more wild as his balls swelled larger between spasming thighs. His eyes rolling wildly as he came over and over.

The orgasms rolling over her were earth shattering as her brothers huge penis lifted her whole body off the ground with its massive strength. She was held aloft by its rigid meat and her brothers huge arms. Their crotches splashed wave after wave of juices and cum onto the bed and each other. They tightly gripped each other as they rode wave after wave of ecstasy.

Rearing their heads, a final huge wave of pleasure washed over them. Claire's breasts splashed the last of her sweet wolf milk against James's chest while her crotch was overflowing with a torrent of her brothers thick horse cum. His huge empty balls convulsed below her. The orgasm seemed like it lasted for eternity as they both almost blacked out. Their bodies thoroughly spent, having expunged the last of their energy. James's horse cock heaving dryly inside of her as her engorged nipples still throbbed, managing to only form small beads of milk at their tips.

With a great wet "schlock" they separated, both collapsing onto the floor and breathing hard. James's huge horse penis revealed to the air, its length almost as long as his arm and almost as thick, surpassing its two foot length handily. Claire's furry breasts jiggled as they settled on her chest, releasing the last few drops of milk hiding somewhere in her mammaries. They both passed out almost instantly, falling forward off the bed into a flood of their own juices. Slowly their bodies receded into their human forms. Claire's huge mound and breasts receding into her body. Her vagina pushing out an obscene amount of horse cum onto the floor as it shrank. Her rows of breasts receding into her body as her main pair shrank into A cup again. James's huge penis shrank back to five inches as his body collapsed back into a lanky, but short, teenager. Both of them too deep in sleep to care.

To Be Continued...