The Angola colobus (Colobus angolensis) is an arboreal Old World monkey belonging to the Colobus genus. The Angola colobus has black fur & a black face, surrounded by long, white locks of hair. It also has a mantle of white hair on the shoulders. The long, thin tail can be either black or white, but the tip is always white. There is a significant regional variation in the total amount of white on the body & the length of the fur. Animals that live in the mountains have longer, thicker fur than animals from the lowlands to protect them against the cold. The Angola colobus has a head-body length of 50 - 70 cm, with the males usually being larger than females. The tail is about 75 cm long, & the body weight varies between 9 - 20 kg. The Angola colobus occurs in dense rainforests, both in the lowlands & coastal mountains. It lives in most of the Congo Basin, to the south & northeast of the Congo River, as far as Ruwenzori, Burundi & southwestern Uganda. The species can also be found in East Africa, especially in the montane & coastal forests of Kenya and Tanzania & in isolated mountain areas. Although the species is named after Angola, it is quite rare in that country. Of all Colobus species, the Angola colobus occurs in the southernmost latitudes. The geographical range lies south of that of the mantled guereza. It is found up to 2,415 m above sea level in Kenya. The diet of the Angola colobus consists of leaves, fruit & seeds. The East Tanzanian population lives mainly on ripe fruit, supplemented with leaves.