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Grévy's zebra (Equus grevyi), also known as the imperial zebra, is the largest living wild equid and the most threatened of the three species of zebra, the other two being the plains zebra and the mountain zebra. Named after French president Jules Grévy, it is found in parts of Kenya and Ethiopia.
Grévy's zebra populations are estimated at less than 2,000 mature individuals, but they are stable. Mountain zebras number near 35,000 individuals and their population appears to be increasing. Plains zebra are estimated to number 150,000–250,000 with a decreasing population trend. Human intervention has fragmented zebra ranges and populations.
The largest extant wild equids are the Grevy's zebra (Equus grevyi), at up to 450 kg (990 lb), a shoulder height of 1.6 m (5.2 ft) and total length of 2.75 m (9.0 ft). [94] Until it was domesticated into extinction the wild horse (E. ferus) was the largest equid.
The plains zebra was formally classified by British zoologist John Edward Gray in 1824 as Equus burchellii.After the quagga, described by Pieter Boddaert in 1785, was found to be the same species in the 21st century, the plains zebra was reclassified as Equus quagga due to the principle of priority. [5]
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Tecalli, a 27-year-old Grevy's zebra, died Oct. 29 at Peoria Zoo as a result of natural causes and complications from a recent medical procedure.
Equines have significant differences in size, though all are characterized by long heads and necks. Their slender legs support their weight on one digit (which evolved from the middle digits). Grévy's zebra is the largest wild species, standing up to 13.2 hands (54 inches, 137 cm) and weighing up to 405 kg (890 lb). [33]
A cross between a zebra and a donkey is known as a zenkey, [4] zonkey [5] (a term also used for donkeys in Tijuana, Mexico, painted as zebras for tourists to pose with them in souvenir photos), [6] zebrass, or zedonk. [7] Donkeys are closely related to zebras and both animals belong to the horse family. These zebra–donkey hybrids are very rare.