[Centurion2000]

Dang! Learned something new tonight. Just did a quick search and found there are actually Zorses (Zebra/Horse), Wholphins (False Killer Whale/Dolphin); Cama (Camel/Llama); and Cattalo (Cow/Bison).

Fascinating

[ValerieUSA]

I think cross-breeding is possible, but the resulting offspring is sterile.