The doctor looked to her phone, pulling out of her pocket after a chime alerted her to a new text.
"Ah, it seems we wont be going down the path of a canine after all. Fair - some pet owners want something a bit more unusual."
The doctor showed her phone to her assistant, showing her what animal had been chosen by the client. "James, you can stand on your two legs now. You wont be having arms for much longer anyhow."
James stood up involuntarily. He was still shivering in fear at his present situation. But the longer he was here, the more intrigued he was than scared.
"You will also not bark anymore, but no speaking either." The doctor commanded. James felt his vocal chords almost lock in his throat.
"Now, lets see. The client doesnt seem to want to see your manhood flopping around like that over the rest of this session," the doctor said. "From now on, you will no longer have a penis, but the cloaca of a male avian."
James shivered as he felt his cock pull inward, as well as his scrotum, all the while pulling back between his thighs. His anus felt swollen with blood as it merged with his genitals and became his new cloaca. When the shifting had finished, he looked flat on the front of his crotch, but as the doctors assistant examined him, it was clear that his anus would now double as his reproductive system and urinary disposal.
"Much better, dont you think?" The doctor gestured to her assistant.
James felt curious and reached behind his ass and felt his new equipment. He was shocked. He didnt know what a cloaca was, but now, as he fingered his new hole, he felt waves of intense pleasure burst through his body. He quickly came on the floor after only a few seconds.
"This will be easier than I thought." The doctor remarked with a smirk.