Something strong and muscular. So Steve decided to select the option for a male bull. He clicked on the option and waited. For two minutes, nothing happened.
Suddenly, he could feel a rush of energy shooting through himself. His body began to pack on muscle, growing bigger and bulkier. He hastily stripped out of all his clothes before they could be torn apart.
His skin began to change to a rich brownish-red color, becoming the hard consistency of raw leather and growing a light coat of hair. His hands remained the same, but his legs began to thin out and bend backwards slightly, forcing him to catch himself before he went down. His feet shrunk away, leaving behind a coagulating mess that hardened into hooves. A tail popped out above his rear, and his penis suddenly grew by several inches and became engorged with blood, fattening it out. The tip turned a bright red color, and his testicles soon inflated with gallons of jizz, hanging underneath his shaft like two beach balls. His ears moved up the sides of his head, and a pair of long horns emerged from his skull and curved upwards. And finally, his face stretched out into a long muzzle, with a small nose and a tongue that practically fell out of his mouth.
Steve stood up, before realizing that he had also become much, much taller. While his human brain remained intact, he was suddenly overwhelmed by animal instincts: eat, drink, and find a mate to relieve the pressure building up in his fat cock. But he didn't know what to do first. On a whim, he decided to first go outside and feel the air on his new body. Snorting loudly, he marched outside, his posture straight, his pride as a newly-formed bull-man rising.