It was a gorgeous day outside, and not just the kind of stereotypical gorgeous that people always talk about, and not the kind of gorgeous that necessarily varies from person to person.

For Dan, it was that [i]perfect[/i] level of gorgeous, where there were a couple of clouds in the sky, but just enough to keep the sun from being too intense, and the gaps between the fluffy spots of white in the sky were filled with all sorts of different shades of blue sky. A timely breeze came around anytime sweat started to gather on his brow, and at just a tick above 75 degrees, it was the best early spring day that anyone could ever have hoped for.

Trying to cut down on his weight a little bit and be more active in general, Dan took the day as an opportunity to go out with his dog, head to the local park, and toss a couple of toys around for him. It wasn't the most active thing in the world that he could do, but it was the perfect way to get outside without breaking into [i]too much[/i] of a sweat, while making his dog as happy as a lark.

"All right, boy; go get it!" Dan called out as he whipped a frisbee down the middle of a long, open field. Dan was fortunate enough to live in a calm, peaceful neighborhood. His house was a bit cookie-cutter by design, but he lived in the sort of cul-de-sac that had a nice, wide open park inside the wide, curving roads, one that a dog could easily play in without much danger of being struck by a car. There was a playground on the far side of it, and though it was a newer neighborhood, there were still some small trees that had been planted about ten years ago, making some of them just large and tall enough to provide a little extra shade on warmer days.

Dan's dog was wagging his tail rapidly as the frisbee glided down over the open field. The excitable border collie ran down the grass and jumped up, catching the frisbee out of thin air in his mouth and bringing it back to Dan. Dan leaned over, stroking a hand along the collie's ear and taking the frisbee from him as he praised him, truly having one of the strongest bonds to a pup that any owner could have.

"[i]Such[/i] a good boy! And that was a [b]great[/b] catch!" he complimented, before tossing the frisbee again, this time before the dog was ready. "Let's see you get this one, Rex!" Dan finally called out his pet's name, as the frisbee whizzed over his head. It flew down nearly the whole length of the field, and Rex didn't quite have the speed to keep up with it, but he chased after it faithfully, following it all the way down to the shade under one of the small trees.

It was nearly a minute before Rex came back, and Dan watched the entire time, an eyebrow raised at just what was taking his dog so long. It only took him seconds to make his way down to the tree, and yet, it was a full minute before Rex finally returned...and not with the plain, red frisbee they'd been throwing before.

"Huh...where did you find [i]this[/i] thing?" Dan asked, as Rex offered him the frisbee, and he held it up to the sun for a moment. There were small pawprints of black all over a white disc, but it truly wasn't even disc-shaped; it was more like a series of small circles rounding off a larger one, not quite in the shape of a paw, and yet, not far from that, either. "Kind of unusual..." Dan murmured to himself, but as he looked around, he noticed that the park was quite empty, especially for such a lovely day. There was no one else anywhere close by enough to assume that they might have dropped it, and no one else brought a dog to the park that day, leaving Dan to wonder if it had just been left behind by another family in the cul-de-sac.

He tried giving it a quick toss with his wrist, but thanks to the unwieldy shape, it fluttered about clumsily for just twenty feet before it fell into the grass. Rex still chased it down and picked it up, bringing it back to Dan with a wagging tail and bright, eager eyes of chocolate, but Dan simply tossed it on the ground next to him. "We'll hold onto it for now, Rex. I'm sure someone will come knocking on the door for it soon enough. How about we play with the frisbee that actually [b]works?[/b]"

Rex let out a quick, snappy bark and sat down on his hind legs, uncaring of which frisbee Dan decided to throw, as long as he tossed one of them. Chuckling at the eager and playful nature of his pet, Dan tossed the original, red frisbee and watched as Rex chased it down over and over again. A couple of times, Dan pretended to chase after the frisbee himself, racing his dog for the first few feet, just to get himself a little extra activity as the sun kept the pair nice and warm. Even if it was just an hour outside, it was the perfect way to spend the afternoon, and when Rex was finally slowing down a little bit, Dan corraled him and knelt down, embracing his pup in a tight, affectionate hug.

"What's say we head on back to the house and grab a quick snack, Rex?" he asked, knowing that his dog couldn't understand him, but a soft, slightly wagging tail and panting breaths from Rex seemed to be confirmation that they were on the same page. "I'll even put some fresh, [b]cold[/b] water out for you! I know how much you love that."

Dan clipped the lead back into Rex's bright, vibrant blue collar and picked up both of the frisbees, walking home and ignoring the subtle scratches on his hand from carrying the unusually shaped disc.

**

Sleep came rather easily for Dan and Rex that afternoon, much as the former was trying to avoid it. 

A little activity was all it took for him to be worn down, and though he was starting to notice progress those days, his gut still hung out over the hem of his shorts just a little bit, and on a day when all he needed to be comfortable was to crack open a window, sleep was hard to resist, especially when his back hit the couch, and Rex curled up on the cushions next to him.

They'd gotten their snack first, of course, but after enjoying a quick protein bar, and for Rex, a small Milkbone, both Dan and Rex were curled up against the soft fabric of his sectional couch, lazing about in the living room as so many people were wont to do on such a lovely day. Cool, comfortable breezes rolled in through the window, keeping Dan nice and cool despite the warm, fluffy border collie that slept next to him, and on the floor, next to his hand were the pair of frisbees that he brought in the door with him.

He never treated his hand for the tiny scratches that he gained from carrying both frisbees in just one hand, despite the fact that he could feel a bit of the slobber from Rex's mouth spilling into the tiny scratches. They didn't seem to be very deep, so he didn't think anything of it when he fell asleep...

...Not until he was jarred awake by a rather powerful itch.

"D-damn it..." he muttered groggily, sitting up slowly on the couch and bringing Rex back to consciousness, as well. "Just tryin' a take a nap...stupid itch..."

Dan still didn't think anything serious of it, of course. He figured that it was just a persistent itch along his wrist, one that he needed to scratch, and it was right upon the joint where his wrist and his hand came together. He rubbed his nails over the small, round nub of bone that stuck up from his flesh a little bit, easing the scratch...but only for a brief moment. It was quick to come back, and Dan thinned his lips as he looked over his wrist, just above where the small scratches were. Groggy, blurred vision made it tough to see anything unusual, and everything felt [i]normal;[/i] a little hair and fuzz upon his wrist was nothing new, as rather hairy bodies seemed to run in his family.

The extra scruff on his chin, however, something he only noticed as he yawned and felt the subtle tickle of fur against his chin, was a little bit out of place.

"Didn't I just shave yesterday?" Dan thought aloud, as he turned and planted his feet on the floor. He was reluctant to get up, but then again, sleeping all day wasn't the best way to spend his Sunday off from work, and if he started preparing for work right then, he'd be able to relax all of his Sunday evening away, just like he wanted to. Some video games, a whole season of a TV show, and a small pizza to reward his healthy efforts that week were all part of the deal, and of course, he'd be sharing a slice with Rex. "Guess I'd better go run the trimmer through it again."

Rex jumped off the couch with a quick wag of the tail, following Dan into the bathroom. The pair were almost inseperable, all told, and they were more than happy to keep things that way. As long as he wasn't doing "his business," Dan had no problem with Rex joining him in the bathroom, and he even asked his dog for advice about how he looked when he shaved, or styled his soft, shaggy brown hair.

This time, Dan simply reached for his electric trimmer, feeling a bit too lazy to go for a full shave. He clicked it on with a quiet [b][i]bzzzzzz[/b][/i] and started to run it over his chin and his cheeks, surprised to see that his 5 o' clock shadow, something that was rare on his face to begin with...looked slightly [b]white.[/b] "I can't be turning gray already, can I?" he asked Rex, turning and glancing to the dog, who replied with a quiet, curious whine. Rex nuzzled into Dan's knee as the human male went about brushing the trimmer back and forth over his face, cleaning up any longer, stray hairs and leaving him with a quick, if somewhat lazy shave, and a nice scruff of salt and pepper that was maintained enough for his job.

"I'll bust out the razor again tomororw night," Dan suggested to himself. "For now...how about we order that pizza and turn on some Netflix?" he asked Rex. The dog didn't understand much, but he'd learned that the word 'pizza' was always associated with a good time, so Rex barked his approval and swished his tail rapidly back and forth as Dan left the bathroom and headed for the phone.

He couldn't quite feel it, but the scruff was already starting to grow back on his chin, [b]much[/b] faster than normal...and the itch on his wrists simply wouldn't go away. He tried to resist, but he couldn't help scratching over that same spot as he nestled the phone between his cheek and his shoulder, using his nails to try and dig the itch right out of his flesh. His skin was starting to turn red from the irritation, and he figured he might have gotten a mild infection, after all.

There was nothing [i]mild[/i] about it, as he would quickly come to find.

**

Morning came faster than Dan hoped it would, as always. No one truly enjoyed Monday, and everyone disliked Monday morning, but Dan had a true [b]hatred[/b] for it. Monday morning meant waking up early, having to go to sleep early the night before, having to dress professionally again, and go and deal with people that he didn't really care to see, no matter how much he tried to get used to them.

This morning, he woke up wrapped halfway inside of a blanket on his couch, with most of a devoured pizza on his coffee table in the living room, and a happy, full Rex sleeping next to him, licking his cheek to encourage him to wake up. His alarm wasn't doing the trick anymore, but Dan could always count on Rex to kick him awake when it was time to head to work.

That was all because Rex had to go outside, of course, but Dan wasn't going to complain about having a living alarm clock.

"[i]Nnngh...[/i] o-okay, okay, I'm up!" he called out, his voice still tainted with sleep. His eyes had the same issue, and Dan was barely able to force them open as he tried to stand up on the floor...and found himself stepping foot right on the frisbees that he left there the night before. His legs flew out from under him, and his body crashed down to the floor, startling Rex into a barking fit and leaving Dan to be conked on the head by the red frisbee. As his mouth opened for him to curse it, the second frisbee they found landed right in his mouth, and suddenly, he was completely distracted from his troubles...something about the disc landing in his teeth made him want to shake his backside, and his eyes focused on the strange, paw print pattern that covered the unusually shaped disc, enamored with it for the moment.

[i]...The hell am I doing?[/i] he wondered, as he spit the disc out, trying to wipe his tongue clean. He was still sleepy, but it was just hitting him that he was digging his teeth into the same frisbee that his dog had slobbered all over the day before. Until that realization came to him, however, he'd been grinding his teeth into the plastic surface of the disc...and he even thought he felt a low, throaty rumble kicking up from his neck.

"L-let...let's get you outside," Dan muttered to Rex, trying not to let the weird start to his morning get to him. Monday mornings really were cursed for him, but he was trying to keep a positive attitude, and this wasn't exactly helping him. He finally did climb back up to his feet and walk over to his patio doors, opening them and letting Rex run free for a bit as he wandered into the bathroom to grab a shower...and just in passing, he looked into the mirror again.

There was that same 5 o' clock shadow, only [b]thicker,[/b] and starting to spread down his neck. It was no longer a salt and pepper cosnsistency, but stark white as it went down toward his chest, and though his sleepy eyes could barely see the change, his fingertips could easily feel just how thick and full the stubble was getting. "...T-that [b]can't[/b] be good...I didn't get a tainted pizza last night or something, did I?" he questioned himself, as he shook his head and tried to ignore it. It was early enough, and he was tired enough that he wondered if he was just imagining things, and as he stepped into the shower, a cascade of warm, steamy water washed away his fears and worries, at least for a short time.

Like so many other people, Dan often just peed in the shower, but he was finding it a particularly difficult task, that morning. For some reason, as he stood up straight, it felt like the streams of his urine were getting stuck somehow, and as he looked down, shifting his hips so he could see the tip of his member, he felt a droop in his shoulders; his manhood actually looked [i]smaller,[/i] as if it was sinking back into his flesh. The only positive was that as he slumped, it became easier to relieve himself, and before long, he was fully hunched over in the shower, but going freely.

"I...I must have pulled something yesterday. Yeah...th-that's all this is!" he did his best to convince himself. He stood back up straight and started washing himself, gripping the bar of soap from the wall and trying to rub it over his body, but his hands were starting to feel clumsy, and every time he started to work up a good, thick, bubbly lather, the soap flew from his hands and slid around rapidly, gliding back and forth over the floor of the shower. It was as if his thumbs refused to grip the bar and keep it in place, and if his hands were having issues, he wasn't going to be able to sit at a computer and do his job that day...not a [b]chance.[/b]

[i]Good thing I've been saving up my vacation days,[/i] Dan thought, as he bent over for the fourth time to pick up the bar of soap. He made sure to cleanse his armpits and his most private areas before being rather lazy about the rest of his shower, making up his mind then and there that he wasn't going to go into work that day. If taking a shower was going to be a stuggle, work might be impossible, and the only thought in his mind was how quickly he could get to a doctor.

Dan was lucky enough to have a large backyard, one surrounded by a thick, tall, wooden privacy fence. It gave Rex plenty of room to roam around in, but the border collie was still ready to come inside, and yet, Dan was having trouble just getting out of the shower. He managed to turn off the water with clumsy hands, but he was having trouble getting the towel to stick around his waist, and as he moved, he could see the excess fat upon his tummy starting to shrivel away.

That [b]would[/b] have been a great surprise for Dan, and he actually did start to smile at the sight...but it appeared to be literally [i]shifting[/i] around his body, moving from his stomach to the thin, weak thighs that held up his body. They were growing thicker and starting to curve slightly more than a human leg should, and it left Dan to lean against the wall as he made his way out of the shower. He almost felt nauseated with his panic, and tried to keep his cool as he reached the back patio doors and let Rex inside. As usual, Rex leapt up and greeted him with a standing hug, but this time, Dan didn't have the balance to keep his footing, and he fell back down to the tiles of the kitchen floor, pinned down by the border collie.

"R-Rex! [b]Hey!![/b]" Dan exclaimed as he fell back, landing harshly upon the stone tiles of the kitchen floor and nearly getting the wind knocked out of him. "[i]Oooof![/i] Gah...d-damn it, Rex, I'm happy to see [b]you,[/b] too, but I kinda need to get to the phone right now!"

Rex was a truly attentive dog, and he could tell when Dan was in a state of distress. Anytime that Dan was down in the dumps, or in some kind of serious pain, Rex became anxious and wouldn't leave his side, wanting to comfort his faithful, friendly owner.

This time...Rex didn't seem to react at all, despite the horrible state of panic that Dan was trapped in.

"Listen, Rex...you need to get off of me, please. I [b]need[/b] to get to the phone, buddy!" Dan repeated himself, trying to express a little more desperation in his voice this time. Still, Rex wasn't moved, and the way that he looked down at Dan wasn't any sort of way that his pet had looked at him before. It was a strange, deep gaze, and for a moment, Dan couldn't read the emotions in Rex's bright, chocolate eyes.

Then, he couldn't even see them, as Rex leaned forward and nipped at the lobe of Dan's ear, sending a small shock of pain through the side of his head. "[b]Rex![/b] What the hell do you think you're doing?!"

Dan tried to gently shove the side of Rex's muzzle, not wanting to hurt his dog, but that kind of behavior couldn't be allowed, and Dan was still changing, even as he pushed Rex aside. He looked at his hand as it came into contact with thick, plush fur and saw that his thumbs were no longer struggling to be useful; they were struggling to [b]exist[/b] as they started to shrink back into his hands and move down further on his palms. The flesh on each hand kept shifting, and once again, Dan started to feel light-headed as he watched his digits manipulating themselves in the strangest of ways.

[i]The scratch...it's gone...[/i] he noticed, as he did his best to remain conscious. [i]Covered up by...fur...?[/i]

The tufts of white were starting to spread across Dan's body, no longer content to settle upon his neck and his chest. The tiny scratch on his wrist actually seemed to be the source of his problems, and Dan shuddered as he felt his body continue to change in such unusual ways. He could see the tufts of white hair starting to sprout up along his forearm, and as they thickened up and filled in, he quickly came to realize that it wasn't his natural hair at all.

It was [b]fur[/b]...almost the same shade of white that covered Rex's entire underbelly.

"W-what...what the hell is this...?" Dan muttered to himself as he held his hand up in front of his face, pretending that somehow, if he just thought hard enough about it, his body would turn back to normal...but in his heart of hearts, he knew that there was already no chance of reversing the process. In a last ditch effort, he crawled over to the kitchen table where he left his cell phone, trying to grip the edge of it to try and prop himself up, and he likely would have failed, if not for the sudden digging of his nails against the soft wood of his table.

They never would have made that grip before, but Dan's nails were getting thicker, and the clear cuticles were starting to darken over with a color that Dan worried might be blood, at first, but that red fluid started to shift to a darker, brown color, and before he could even pull himself up to the table to grip his phone, his nails were completely blacked over. Thick, tough resin was leaving deep, trailing rivets in the wood, and despite the lack of proper thumbs, Dan was able to lift himself up to the table to see his phone...and when he knew he couldn't grip it with his other hand, instinct kicked in and told him to lunge forward, gripping the screen between his teeth.

As he brought the phone to the floor, he tried to figure out where that instinct came from.

Rex was watching the entire time, keeping his bright, curious eyes turned to the action and focused rather intently on Dan's lower half as the towel fell away from his body, but it wasn't from his pose that it fell away: it was from the slow emergence of a stub of flesh, growing out from his back and pushing the towel off of his backside, something that Dan could no longer ignore as he looked over his back at it. His head lowered again, and his eyes grew wide with fear as the small stub wiggled back and forth, appearing excited and betraying his fearful nature of the moment. It was growing longer with each second in a slow, bulging motion, as if more flesh was bubbling up from under the surface of his flesh to create the new appeandage...and Rex's eyes were focused just underneath it.

Dan was a smart man, and one too smart to ignore what was obviously going on, even if he didn't understand it in the least.

[i]Gotta...gotta dial the number![/i] he cried out in mental panic, trying to use the tip of his nose to unlock the screen of his phone, but as he did, he could feel the bones in his face bulging out, making it that much harder for him to keep his nose out in front of the rest of his flesh. His lips and cheeks narrowed in, and then bulged out into the shape of a muzzle, and speech became that much more difficult as his snout simply moved the phone around on the floor, no longer able to use it properly.

Just when it seemed that things couldn't get any worse for Dan, he looked at his wrists to see that his thumbs had disappeared completely, moving down his wrists to become the hind end of newly formed paws, and his rapid weight loss [b]wasn't[/b] good enough to be a silver lining. It didn't help that fact that as Dan looked between his legs, he couldn't even see the small stub of his cock anymore.

It had been swallowed up [b]compeltely[/b] by his flesh.

"T-the hell?!" he yelled, looking down between his legs a little more closely. His voice was already starting to wobble as the features of his face changed, and he couldn't frown properly to express his displeasure in the new arrangement. His neck seemed that much more flexible as it looked around and down between his arms, a pair of appendages that were still shifting. "My...my dick is gone...w-where did it go?!"

The flesh that once hung between his legs was actually moving back [i]inside[/i] of his body, and making a small cavity between his thighs, one that Rex refused to steal his glance from. If he still could, Dan was sure that he would be blushing from the attention, and it didn't stop at just a glance; Rex was getting closer still, bumping his nose against the underside of that strange, wiggling nub that continued to grow out of Dan's backside. There was a cool, chilling sensation, one that ran up the length of Dan's spine as Rex pressed the cold, moist flesh of his nose against Dan's asshole, taking in his scent and becoming more familiar with his owner than he'd ever been before. Shuddering and trying to get control of the situation, Dan writhed against the floor, wishing that he wasn't feeling such a pleasant tingle growing in the pit of his stomach. Of course, that sensation paled in comparison to the feel of Rex's long, flat, dripping tongue running over the tiny, tight pucker of his anus, leaving him to grit his teeth and press his chin into the floor, still drowning in the disbelief of the moment.

[i]This...this [b]can't[/b] be happening![/i] He cried out in a state of mental anguish, finding it harder and harder to make any sound beyond an angry grunt or growl. His lips hung open, but an extra lining was starting to appear there, something akin to a set of jowls, and his tongue was getting so long that it was becoming impossible to contain it in the normal confines of his mouth.

It was a good thing that his face was shifting to accommodate the same.

"Nnn...rrnnn! Rrrx!" he tried to yell at his pet, trying to get the beast to stop, but there was nothing he could to do sway Rex...not when the beast was mindlessly swiping his tongue back and forth over Dan's ass, embracing his scent and pressing the cool end of his nose against what was no longer bare flesh. Dan was still naked, that much was true, but the fur that was spreading down from his neck was growing out from his armpits and crotch, as well, and the normally darker shades that made up his pubic hairs were starting to shift to a bright, stark white, giving him a proper, full, and plush underbelly. The soft tufts of fur were starting to fill in as Dan tried to crawl away, not able to do anything more than that at the moment as he tried to adjust to his new, ever-changing form. His arms were shortening up to his body as the hands at the end were now fully shaped like paws, the fingers having long since shrunk back into his wrists. He pressed them down to the ground, but he couldn't get used to the feeling of putting weight on them right away, leaving him to keep crawling away from Rex...but his hind legs were still shifting and curving. His body was shifting from a bipedal set up to walking on all fours, and as his hind legs curved, he tried to stand upright, his mind finally accepting what his body had long since given into.

[i]Okay...press on all fours...straighten out the legs,[/i] he mentally coached himself into standing upright, but it didn't turn out to be the small victory that he hoped it would.

It was just an unintentional way to entice Rex into further perversion.

The now long, wiggling appednage from his lower back was sprouting fur as it swished back and forth, and knowing what was happening to him, Dan came to realize that it was just his tail coming to life, starting to sway with the internal excitement of his transformation. The rapid change of homoromes in his body was something more than he could handle, and the cavity that was growing between his legs was already beginning to grow moist...giving Dan a strong and arousing clue as to where his manhood had actually gone.

[i]Really should have disinfected that scratch the moment I noticed it. It feels like...like I'm melting between my thighs...and I love it! Why does that feel so damn good?![/i] Dan started panting as black fur crept up his back, completing the fur coat that now covered his entire body. He was filled with a warmth that he couldn't escape, but the fur was only concealing it and trapping it in his flesh...the source was actually the growing, slowly shaping labia that were starting to form. Very thin tufts of fur, much thinner than the rest surrounded the growing womanhood as it came to fruition, and a plethora of new scents and pheremones radiated from it, drawing Rex that much closer to his former owner.

When it was all said and done, Dan was panting, growling, and standing on all fours...but he was no longer human, and he was no longer a [b]he.[/b]

Dan was a [b]she,[/b] and had fully transformed into a border collie, not too different from the one that he used to call a pet...and that same former pet was quick to press his muzzle into the slightly triangular folds of new, warm, decidedly [i]female[/i] sex.

[i]No, Rex...please, don't! I just want that sensation to go away...I want everything to go back to normal![/i] she mentally begged, but like all of her previous efforts, it was all for naught. Rex was completely enamored with the new addition to her transformed body, and his snout was buried deep against Dan's haunches as his tongue flickered out again, taking a curious, full taste of what he now thought was just any other female canine. What set Dan apart in this case wasn't just the fact that she was transformed from a human to a canine, but the fact that her sex was already dripping and drooling with something that would have been beyond her control, whether or not she was born a canine.

It was an itch, much like the one that plagued her wrist only hours before...but so much stronger, and somehow coming from within the virgin passage that was her new womanhood.

She was [b]in heat,[/b] and Rex wasn't going to pass up the opportunity to mate with such a needy, delicious female.

Eager, trembling paws started to climb up upon Dan's lower back, gripping and digging at her flesh as Rex started immediately trying to mount her. The sweet, earthy aroma of her pouting sex was plastered across the end of his muzzle now, filling his lungs with the rush of her arousal every time that he took a breath. It was enough to drive any male insane, and Rex was the kind of canine who wasn't fortunate enough to partake in such pleasures all that often. Dan could feel that same sense of urgency as the paws started to sneak their way around her underbelly. Sharp, painful claws dug deep into flesh as Rex pulled Dan's body back toward his own, and his hips lunged foward as the sheath between his legs started giving way to the bright, firm tip of pink that was hidden within.

[i]Rex...you can't do this! [b]We[/b] can't do this! This isn't right...please...[/i] In her own mind, Dan was going to ask Rex to stop, but her body had different plans, and the fires of lust that burned within her easily overwhelmed the weak mental impulses that told her body to try and flee. It was [b]much[/b] easier to hold still and try to move her tail out of the way, exposing her pucker and her canine womanhood to her former, pet so that his sheath would know just what to line up with. Extraordinary warmth started to envelope the small, moist opening of Rex's soft, furry holding, and his hips bucked forward rapidly, letting a series of rapid, eager thrusts buck against Dan's backside, shaking the female border collie and leaving her legs to nearly crumple under the pressure.

Despite all of that...she started to push back, encouraging more and more of Rex's surprisingly plentiful length to come free of his sheath.

Instinct and painful, desperate heat was easily taking control of Dan's body, and her hind legs made sure that she wasn't going anywhere. Even as sharp, dangerous claws dug into her flesh, scraping under tufts of her fur, and thick, powerful legs slapped and slammed against Dan, she couldn't hope to get away from Rex's advances, and as the transformation continued inside of his mind, it wasn't the physical body that Dan had to worry about any longer.

It was her own mind, and the way that it was changing too rapidly for her to control. 

[i]Can this really be happening?[/i] Dan wondered, but it wasn't the situation that she pondered about, anymore. [i]Can he really be this poor with his aim?[/i]

Though her mind was quickly fading into that of a feral canine, Dan still had enough of a human sense about her to push her hind legs back a little bit, feeling just how much trouble Rex was having in finding the sweet spot. Tiny spurts of precum were already dotting the soft, smooth fur upon Dan's rear, but neither canine would be satisfied by a couple minutes of dry humping. There was a heat to be quelled, and a male that was being driven insane by it, to the point that his technique was suffering. 

With human intellect and animal instinct, however, Dan was able to lean forward and lower her hips just a little bit, giving Rex the perfect angle to finally strike gold, and draw a deep, passionate howl from his new lover.

"Ahhnn...mmrrr...mmrawr!!" Dan cried out, trying to make a gasp of pleasure pass through her maw, but it came out as a series of sexually frustrated groans and howls. It was the sound that Rex was looking for, however, and his own instincts were in high gear as the rest of his length quickly erupted from his sheath, firing out through the small hole like a missile and passing right into Dan's waiting, dripping cunt. Having a vagina at all was still a little weird for Dan, and the fact that it was canine in nature only made things weirder, but she was shocked to find that, full as she was, she wasn't in any sort of pain; her body was just the right fit for Dan, and there was no pain to be had for the first long, full thrust into her body.

There was [i]ecstasy untold,[/i] and a sensation that ran all the way up from the heated, stretched lips of her sex, all the way through her tummy and to the pounding walls of her heart.

[i]That's it, boy...get it in there deep...yes...yes![/i] A chorus of moans was echoing through Dan's mind as his more rational thoughts started to fade. Now that he was in, Rex latched his paws down even tighter around Dan's haunches and pressed his hind legs firmly into the floor, planting himself and starting a face, rapid pace, having no concern for the fact that Dan was technically a virgin. As a wild animal, Rex couldn't know of such concerns, and the way that his hips turned into a blur, slapping and slamming against Dan's backside was just further evidence of that.

Of course, Dan wasn't complaining one bit. Instead, her tongue was hanging out of the side of her muzzle, dangling over her jowls as she was fucked silly, her legs simply doing their best to stand up against the sudden and powerful onslaught from the pup that she literally helped to raise. Their connection had always been strong, and their bond unbreakable, so much so that even if this was a forbidden act, it seemed to come natural to Dan, who was really nothing more than a memory, now. She was simply a female dog, without an identity, but with a mate that she was desperate to please. Her eyes lidded over just slightly as she looked back over her shoulder, whining and whimpering like the bitch in heat that she was, waiting eagerly for a flood of canine cum to put out the lustful fires of her heat.

"Rrr...[i]rnn![/i]" Rex grunted as he leaned over, pressing the end of his muzzle down into Dan's fur. He started nipping gently against the back of the female in an act of affection, trailing his nips further and further up until he was biting down at the edge of her scruff, right upon the back of her neck. Rex refused to let go, even as Dan let out a quiet squeal of shock and delight, one that would have been enough to draw the attention of the neighbors if Dan had forgotten to close the patio doors. In the privacy of the home, however, Rex and Dan were free to carry on as they pleased, uninterrupted, and like the canine male that he was, Rex was already rapidly approaching his climax.

Lucky for him, Dan was now nothing more than a typical female canine, one who expected a quick, brutal, and satisfying mating, each and every time that her male so desired it.

Tiny droplets of drool fell to the floor, coming from the end of Dan's tongue as it gently bounced with her rapid, feverish panting. Her muzzle refused to close and warm, thick breaths constantly escaped her as her body did all that it could to accommodate the thick, veiny and impressive length of the male that had taken her. Right at the base of his cock, just starting to poke out of his sheath, a thick, bulbous and rounded knot was starting to emerge, and though the male he once was wouldn't have understood, the female canine that Dan now was knew exactly what it was for, and just how badly she wanted to feel it inside of her. Claws pressed into the stone tiles of the kitchen floor with a renewed determination, keeping her body steadfast as Rex pounded wildly into her body, letting the knot spread her canine folds further and further apart, until the tennis ball sized lump was firmly inside of her body, leaving Rex to do nothing more than gently buck his body atop of Dan, unable to pull his member free from her sex any longer.

Dan only wished, with the last, fading thoughts of her humanity, that she could express to Rex how much she deeply cared for him, and just how lucky she felt to ever have him as a pet, as one in the same filled her body with a sudden, rapid volley of seed, one that seemed to be never ending. Thick, hot streams of the mess sprayed all the way into her newly formed womb, filling up the innermost parts of her feminine sex and painting her insides with such a vast quantity of canine cum that it was already starting to break the seal just slightly, with the occasional trickle escaping past Rex's knot and spilling down to the floor, leaving a tiny, milky puddle of excess juices just under their bodies.

Whimpering with elation and lowering her head in a submissive sign to the male that had claimed her, Dan looked back once again and watched as Rex lifted his leg over her body and turned around, leaving the canines backside to backside. It was a perfect tie, something that the powerful, canine instincts that now controlled Dan's mind were easily able to recognize. The constant, eager throbbing of the knot inside of her tight, clenching walls and the endless drizzle of cum that continued to fill her womb were just what the doctor ordered, and though it likely wasn't permanent, she could feel the powerful itch of her heat finally being scratched, just like she do desperately needed.

Both border collies were panting after the heat of the moment had passed, leaving them to stand rump to rump in their tie, able to do nothing until Rex's knot deflated enough for them to separate. The bath towel that Dan lost was still on the floor underneath of her new, canine form, giving her a nice, cozy place to lean down and rest her head as she waited for the tie to end, and her breathing finally came back down to normal.

Seconds faded into minutes, and the minutes into nearly a half an hour of Rex's thick, swollen orbs draining everything that they'd saved up over time into Dan's waiting cunt, leaving her full to bursting when his knot finally did deflate just enough to come free from her body. There was a slick, messy [b][i]squelch[/b][/i] as Dan's inner walls were stretched, and then, her outer lips met with the same fate, barely able to spread wide enough for the bulb of flesh to escape her body. The bright, red and pink member hung down between Rex's legs, still stiff even after what they'd been through, and in true canine fashion, he spun his head around and did his best to lick the extra juices off of it, tending to and cleaning himself.

Dan, on the other end, whirled her head around and began lapping the excess seed up, gathering it onto the long, flat, moist muscle of her tongue, thinking that she was doing nothing more than cleaning herself...simply preparing for the next round with her mate.