A cross between a zebra and a donkey is a zonkey. This one is at a petting zoo at a creationist museum. All of this is awesome.
Wiki: zonkeys may also be known as zebrass, zebronkey, zeass, zeedonk, zedonk, zebadonk, zenkey, donbra, donbri, donkra, zebrinny, or deebra, zebrula.