They most likely mixed in more than just cow, bull and horse genes in the treatment.
So occasionally you might get a different TF than the norm.
You lucky dog
Taken from the wiki:
- 4/5 chance to convert penis to equine (2/5 chance), canine (2/5 chance), or feline (1/5 chance) if not already of that type; with a 50% of converting all penises into that type, if multiple and not that type.
Unrelated, but I wish the mare and stallion thing the wiki talks about could actually happen in game.
Getting more horse like features that is.
Or is that already possible?