Eastern black-and-white colobus
The eastern black-and-white colobus monkey, or mantled gueraza (Colobus guereza) is a species of monkey. It can be as big as over long (excluding tail) and up to. In the wild, they live about 20 years.
Colobus monkeys are vegetarian. They have a three-chambered stomach to help digest leaves.
References
Mammals of Africa
Old World monkeys