Sam hated shopping!, being ADD he had too much energy all the time, and hated staying still or being bored. And that was all he did when he went shopping with his mom, at least she’s almost done he thought to himself then we have a week until we do it again! Mom doesn’t take Preston anymore since he’s gotten older, it’s not fair! On the ride home Sam noticed so many dogs, way more than normal, but he didn’t really question it, the news station had broken down because they had all become dogs before many could be informed so most peoples day went about as usual. Unsuspecting. Aside from wild rumors.
Preston stirred awake, the smells of sex and cum lingered in his head and room, she stood up and shook his new fur coat, I can still think for now Preston thought, that’s cool at least! Where’s Toby? Toby walked in from the bathroom and licked him on his cheek. Said he has to leave for a while almost telepathically to Preston, if I don’t the family will know there’s something up, but since you look like me stay here and finish the job of making our pack! I understood immediately, we had strength in numbers and I missed my family. He assured me he would be back after their changing, kissed Preston once again with his tongue and licked his sheath tip goodbye, before leaving out the doggy door.
Sam rushed inside needing to pee badly, rushing to his room on the other side of the house he did his business while his mom put away the groceries, not feeling it was time Preston stayed in his bedroom laying down,
After Sam’s mom put away the groceries she went to her room to nap, Sam came out into Preston’s room to play video games figuring he was at a friends, Preston sensing his time walked right over to Sam stuck his nose up his shorts and licked his ballsack once heavily, getting a loud exclamation from Sam who’s crotch was now soaked, Preston made sure of it! Sam stood up, and said “that damn dog!” What the hell?!
And went to the bathroom to clean up.
Preston chuckled to himself, shouldn’t be long now, that was far more than I had had. Considering the remainder of seed in his saliva too. Sam was flabbergasted stripping in the bathroom, he never thought that would ever happen. He lifted his cock to attempt to wipe off the remainder of saliva on his balls, but noticed they were now dry! The spit had evaporated and absorbed. He huffed and put back on his shirt he was wearing commando. Walked right back into the room feeling heat in his drawers not knowing what was happening but being an avid masterbator figured he was horny and funny enough looked at the dog, Preston stood up and came and nuzzled his brothers growing crotch, knowing what was coming and excited for him to join the ranks, Sam became lightheaded and moaned uncontrollably and the front of his shorts splattered with pre and became obviously damp, Preston started licking at the fluid which turned on Sam even more, yes Toby, he whispered, trying to not be loud so no one would hear, not realizing the small bump at his tailbone becoming a tail, he pulled his drawers off entirely to give “Toby” better access, Preston obliged. Sam rolled his head in pleasure not knowing what was coming over him but feeling oh so good and just wanting to cum, he got so lightheaded he stumbled to the bed with Preston folllowing he laid down so that his feet were still touching the floor, and his dick stood in the air bobbing. Preston resumed his licking getting moans out of his little brother as the boy neared his climax, Preston didn’t even have a thought that this was his brother, he was just a dog, and this was any other dick, he was doing his job making members of the pack, and Sam didn’t know yet anyways! As he was licking he noticed Sam’s dick began to attach itself to his lower belly and this was encouragement to Preston to keep going, Sam’s eyes were shut in bliss and he was practically trying not to cry this was the best moment of his young life, and he was enjoying every second of sensation. He did think it was odd the dog knew how to do it so well, but he kept that to himself anyway because he would’ve done it again! Stifling moans and twitching hair began sprouting all over his groin and spreading outward from it, an obvious tail now stood behind Sam’s legs unknown to him. Preston thought it was odd his dick had gotten bigger but Sam’s seemed to be slightly smaller than it was when they started, suddenly Sam stood up, wide eyed. Having pushed toby off of him Preston just stood and watched as his younger brother moaned and writhed in extreme pleasure, noticed his tail even had enough time to exclaim, “what is happening to me” and his balls tightened he shook a little, his balls seemed to raise almost inside him and did somewhat. He then profusely came handsfree shaking moaning and emptied his nuts entirely, his dick stayed twitching and kept shrinking with every last squirt until all that remained was a small nub. Ahhh he screamed, I shouldn’t done it, what the fuck is happening, as he began moaning again a small crevice appeared in between his legs leaving the nub in the middle still shrinking to become a clit, white liquid oozed down from his legs which Preston quickly lapped up. Smelling and tasting for the first time in Preston’s young life as a boy or a dog: pussy, his instincts went wild and as he was licking he was very aware he was making his little brothers pussy cum with every contraction he squeezed around his tongue more and more of Sam’s human hood vanished until he/she came huge dousing Preston’s face and the floor below fully completing his transformation into a bitch. Sam’s head was cloudy, he had no real knowledge of what happened other than it had felt good, he felt still a burning heat in his grion, and licked his swollen pussy, he was in heat that much he knew, looking at Preston’s erect member in his sheath, now somehow knowing this was Preston didn’t change anything a bit, but he knew it was him though and wondered about Toby. Forgot conveniently as he was reminded of a Canine dick from his deep heat. He yapped at Toby who knew exactly what she wanted as Sam turned to let his rump face his once older brother, who still kinda is… but dogs do this shit all the time he thought, they don’t care they don’t have a rule. Just as Preston’s tongue entered his vulva he cries in pleasure but it sounds like a whine. And Preston mounted him. The rest was a blur, Sam contracting on Preston’s doggy dick as they both came and Sam getting totally knotted and filled with doggy seed so much his belly expanded and felt very warm, he could actually feel each squirt of semen into his womb! And could feel it filling up his tubes and meeting his eggs. He wondered if whatever this was would speed up pregnancy too to multiply faster, if it wanted to spread he may have something to worry about soon. But relaxed into the pleasure as the knot kept pumping him full of semen, and laid down happily.