Kevin woke up with a start. How long had he been unconscious? He groaned and sat up on his haunches. He looked down and felt the heavy collar weighing down his neck. What had happened to his clothes? And what was stuffed in his ass? He struggled to remember but his mind felt empty.
Just then, a tall, built man in a towel walked into the room. Kevin opened his mouth to ask where he was, but only a pathetic bark escaped. Why was he barking? Kevin started to panic. He tried to get to his feet but fell onto all fours. Why was his ass wagging? Was that - was he stuffed with a tail?
The man looked down at him and smirked. Your brainwashing is taking a little longer than usual, boy. Kevin backed away, growling. The man laughed. Youre all bark and no bite. He tossed a bone on the floor and Kevins mouth watered. He dove for it, taking it in his jaws. He chewed hungrily, his cock getting hard. The man knelt down, roughly jerked him back by the collar, and looked him in the eyes.
Beg.
Kevin snapped up onto his haunches, palms at his chest, like hed been programmed. He whimpered. The man spit on his hand and gently but firmly grabbed Kevins cock. He began to stroke it slowly, relishing Kevins whining. Every time you cum, you turn into more of an animal, the man said, stroking a little faster. Pretty soon you wont remember anything. Youll just be a horny little puppy, ready to be given away to a good home. He stroked faster. Kevin yelped. Do you want to be a puppy? Kevin started to shake his head no but his instincts told him not to drop the tasty bone he was chewing. The man grinned and began to pump his cock swiftly. Kevin shuddered and came, spraying cum all over himself. The man wiped his hand on the towel. Youre a very good boy. Now follow me and lets get you washed up.
Kevin looked up at him dumbly. He didnt understand human speech anymore.
(And thanks to @lockedandcollared for sending this pup my way&)