Guereza colobus monkeys inhabit equatorial areas of Africa - Nigeria, Cameroon, Ethiopia, Kenya, Uganda, Tanzania, N Congo, E Gabon, Central African Republic, NE Zaire, W Kenya, NW Rwanda, and S Sudan.
Head and body length – 18 to 27 inches; tail length – 20 to 35 inches; weight – 15 to 30 lbs. Coat: glossy black, face and callosities surrounded by white, U-shaped mantle of varying length on sides and rear of back, outside of thigh variably whitish, tails variably bushy and whitish or yellowish from the tip towards the base. Newborns have a natal coat that is completely white, shorter, and downier than the adult coat. This natal coat changes to the adult coat color between 5 to 10 months of age. Infant skin lacks dark pigment at birth. Their hands and feet turn black at approximately 3 months. At birth, newborns are approximately 8 inches long and weigh less than 1 lb.