After he'd finished the delicious milk he noticed his clothes were feeling much tighter around his chest and hips, and what a surprise he got when he looked down! Boobs! And growing! Not only was he turning into a girl, his clothes were starting to rip! And are those...Hooves?

Part 4 of 6 of a trade with

Weird that cow or bulvine isn't listed under species...

Edit: forgot the horns, fixed it > <