[BOVINE] - leather hide

The panel says:

[MALE]

-[MAMMALIAN]

--[BOVINE]

Your body swells, skin thickening into a tough hide. You legs grow in thick, covered in a layer of rough hair. You even have a pair of hooves. Finally 2 horns curl out of your tempes, framing your skull like a helmet.

"Hmm, interesting...So you would rather go on the defense. Can't say I favor it, but the fans love to see your kind fuck, so..." The doc hits a button on the tank and you pass out.