"Haaw-lright," said Max, "let's get going again."
"Hold on a sec, Haaaw!" you bray. "There was something else the voice said we should do."
Max looks at you. There's a mix of fear and excitement in his eyes. You can tell that he still mistrusts the people imprisoning you, but your own doubts have vanished.
"We're animals now, and that means we should be naked!" Your hands quickly grab his shirt and rip it from his torso. Max brays in shock, and then he swings clumsily at you with his fist. You drop to your knees to duck under his arm and then yank his trousers down. He tries to kick at you, but with his feet still cut he simply trips himself to the floor.
You slip your own trousers off as you stand and kick away the useless fabric. Your nudity excites you, and for a moment you shut your eyes an enjoy the sensation of blood rushing to your penis. When it's fully engorged you get the sense that you should push in a similar way to how your tail was formed, and without hesitating you let out a long bray.
You can feel the head of your cock pushing out from your foreskin unnaturally, but it's a pleasant sensation, and one you wish to experience more. You bray again, this time stomping your foot as inch after inch of your cock swells from the skin that once held it.
Max is staring at your chest when you open your eyes, slack jawed and wide-eyed. When you look down you're stunned to see the tip of your cock is now flat and only a few inches away from your face. If you wanted to you could curl forward and taste it. And with a shock you realise that you actually do want to do that.