**AN: Inspired by The Perfect Pet by fueledbyquarantine, definitely recommend checking out their work if you like this. Also, this is a non-con story, and I feel like it needn't be said but I do not condone the behaviours that these characters engage in. If non-con elements are likely to trigger/upset you, I'd advise you don't continue**
Prologue
Cai smiled down at his pet, currently napping on the floor by his masters' feet. His hips gyrated slowly and his cock ground into the carpet. Cai knew that couldn't be a comfortable way to get off, but puppies were not supposed to use their hands. Buddy had taken a while to get used to his new life, but for the past few months he had been nothing but a model pup. Cai had told him earlier today about the gift he would be bringing home for him soon -- a bitch of his very own that he could mount to his hearts content. He liked to think that is exactly what buddy was currently dreaming about, as he rubbed his cock raw and red in an attempt to cum (not that he could without express permission from Cai).
And now
Andrei awoke in the same holding cell that had contained him for the past few weeks, groggy and confused. It took him a few moments to gather the strength to open his eyes, trying to chase away the heady fog of sleep permeating through his mind. The first thing he did was check his hands, fervently hoping that his memory of the previous night with the doctor had been nothing more than a horrific nightmare. He looked down to see that they were tightly covered in some sort of soft black wrapping, and it was clear from only a glance that there was no way his fingers would have any room to fit inside. A garbled croaking sound escaped his mouth in place of a scream, and he winced slightly at the discomfort the noise brought to his throat.
Silent tears streamed down his cheeks as gathered the courage to look behind him and confirm what he already knew. He craned his neck hesitantly over his shoulder and sobbed at the sight of his new tail attached just above his asshole. Frowning a little in concentration, he explored the new muscle connections and sensations coming from the new appendage. From what he could tell the damned thing was fully functional, curled in towards him and shaking with the fear that was steadily overtaking over his mind.
When no one immediately came to see him after he'd woken up, he rested his head over what was left of his hands and sobbed himself back to sleep.
The second time he'd awoken he felt a little more lucid. He already knew what to expect of the changes that had been made to him, and instead decided to take stock of his holding cell. The first thing he noticed that the bed he used to sleep on had been removed, and he had awoken curled up in a soft round bed on the floor. A dog bed. Great. It looked like his new owner was really committed to the pet thing then. The silver dog bowl filled with water on the other side of the room strengthened his suspicion that it would be a long time before anyone treated him as if he was human again -- if that day ever came.
Upon seeing the water he realised how dry his mouth was. He attempted to stand to make his way over to the bowl, forgetting no longer had the ability to walk on two legs. With an unnaturally soft cry of pain (dampened by the damage done to his vocal cords) he fell back to his hands and knees. He huffed indignantly and turned his head away from the water bottle, refusing to belittle himself by crawling around the room like an animal. But he really was thirsty. Nearly unbearably so. He lasted all of ten minutes before resigning himself, tentatively placing one hand (paw) out in front of him to see if it would take his weight. He felt his new tail tucked in between his legs, rubbing maddeningly against his swollen, aching pussy as his hips swayed side to side. He made it a personal point of pride not to moan. He failed.
