I vote we name it Debra since it's called zonkey.
A friend proposes we call it Ucos - Unholy Creature of Satan.
Usually people cross-breed organisms to make improvements in the original species.
But I'm not really sure what the greater benefit of combining a donkey and a zebra could be.
Apparently I have not been watching enough Animal Planet because this isn't the first time half zebra/half something else have been created. This site lists the official names of zebras crosssed with horses, ponies, and donkeys.
I think we've taken this top of the food chain thing one link too far.