A zebra is a hoofed African mammal (genus Equus). It is distinguished from other horses by its vivid pattern of alternating white and dark brown (or black) stripes. Zebras stand to be about 4 feet tall. They have a stout body and a short thick mane. Zebras inhabit open plains or brush country in herds of up to 1000, and they often mix their herds with othr grazing animals, such as antelope. Zebras are very quick, running at speeds as high as 40 mph.