The Angolan colobus (Colobus angolensis) is an arboreal monkey that inhabits tropical rainforests and montane forests of central to southeastern Africa. Body length is about 49–68 cm, average weight about 9 kg, and the tail is longer than the body, reaching about 80 cm. It primarily eats young leaves and shoots, seeds, flowers, and lichens; anaerobic bacteria residing in its three-chambered, constricted stomach ferment and break down leaf cellulose to obtain nutrients. Diurnal, it normally lives in groups of around ten individuals with one adult male and multiple females, and mature males leave the group. Females give birth roughly once every two years; gestation lasts 5–6 months, and infants are born with white fur that develops into the adult coloration after several months. Conservation status is Near Threatened, but habitat destruction and hunting may be affecting population numbers.