Bovine animals are a completely different thing. Bovine implies cow. Cows are ruminants, meaning they have a chambered stomach. Horses are referred to as Equine. They have a normal, one chambered stomach. In fact the primary difference between their digestive system and ours is that they have a larger colon because they are herbivores.
I think what you meant to say is WHY HAS EVERYONE GOT UNGULATE ANIMALS
Ungulate means hooved.
"i used to shit in my hand and then rub it on my butt cheeks and slide across my kitchen floor pretending i was a wounded slug" -Gator