The zebra is also apart of the horse family... I HOPE THAT ANSWERS YOUR QUESTION.
There is at least one more but I don't know the name right off the top of my head. I think it is a cross between a zebra and a wild burro (donkey, jackass, whatever you call it). The pictures I have seen show it to be usually dun colored to darker brown, I think it has the dark stripe down the back too, and the legs are striped from the hoof to about half-way up. Anyone else remember this critter? Let me know if the name comes up. I've seen them in person too, at zoos and at a carnival once.