Oxen are generally dark brownish or blackish in color.
The extinct aurochs originally ranged throughout Europe, southern Asia, and northern Africa. The yak inhabits steppe grasslands and high mountain pastures in Central Asia. The gaur, banteng, and kouprey are at home in the tropics of southern Asia. Oxen are grazers, feeding primarily on grasses. They are social animals, usually found in small herds, though males are occasionally solitary.