Zebras are odd-toed ungulates of the Equidae family native to eastern, southern and southwestern Africa. They are best known for their distinctive white and black stripes, which come in different patterns unique to each individual. They are generally social animals and can be seen in small harems to large herds. Zebras are generally 2.3 m (8ft) long, stand 1.25-1.5 m (4-5ft) at the shoulder, and weigh around 300kg (660 lbs), although some can grow to more than 410 kg (900 lbs). In addition to their stripes, zebras have erect, mohawk-like manes. Unlike their closest relatives, horses and donkeys, zebras have not been truly domesticated. There are three species of zebra: the Plains Zebra, Grevy's Zebra and the Mountain Zebra. They can be found in a variety of habitats, such as grasslands, savannas, woodlands, thorny scrublands, mountains and coastal hills. The name "zebra" comes from the Old Portuguese word zevra which means "wild ass". The pronunciation (in IPA) is /ˈzɛbrə/ (ZEB-ra) internationally, or /ˈziːbrə/ (ZEE-bra) in North America.