A zonkey (also known as zebrass, zebronkey, zeass, zeedonk, zedonk, zebadonk, zenkey, donbra, donbri, donkra, zebrinny, zebrula, debra) is a cross between a zebra and a donkey. The generic name for crosses between zebras and horses or asses is zebroid or zebra mule. "Zonkey" is not the technically correct name for such a cross. The most commonly accepted terms are zebrinny, zebrula, and zedonk. Donkeys are closely related to zebras and both animals belong to the horse family. Zonkeys are very rare. In South Africa they occur where zebras and donkeys are found in proximity to each other. Like mules, however, they are genetically unable to breed, due to an odd number of chromosomes disrupting meiosis. However, in The Origin of Species, Charles Darwin reported a case of a zonkey that apparently bred with a bay mare to produce a "triple hybrid". Usually a zebra stallion is paired with a horse mare or ass mare, but in 2005, a Burchell's Zebra named Allison produced a zonkey called Alex sired by a donkey at Highland plantation in the parish of Saint Thomas,Barbados. Alex, born April 21, 2005, is apparently the first zonkey in Barbados.

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