The King colobus (Colobus polykomos), also known as the Western black-and-white colobus, is a species of black-and-white colobus of the Cercopithecidae family, found in lowland and mountain rain forests in a region stretching between Gambia and Côte d'Ivoire within Africa. It eats mainly leaves, but also fruits and flowers. Though it is arboreal, it eats primarily on the ground. It lives in small groups consisting of 3 to 4 females and 1 to 3 males, plus their young. These groups maintain distance from one another through territorial calling.