Saw this on the news Friday: The very rare Zonkey, a cross between a Zebra and a Donkey.  His name is Khumba, and was just born at a zoo in Mexico.  Although it kinda makes sense and donkeys and zebra are similar animals, this is really an oddity as it's believed zebra and donkey chromosomes aren't supposed to be compatible, although another Zonkey named Ippo was born in Italy last year. As a side note, the father, although mostly kept in a separate area, makes daily visits to see his new son!