The meat of the drill, red colobus and black colobus is the most expensive.

The primary forest is inhabited by creatures such as mandrill, black colobus and chimpanzee.

The black colobus has dark skin under a long black coat of fur and a long black tail.

As well as chimpanzees and gorillas other primates include black colobus monkeys and mandrills.

ARKive - images and movies of the Black colobus (Colobus satanas)

The park is also home to diurnal primates, such as the threatened crested monkey, De Brazza monkey, and the black colobus, who reportedly only live east of the Dja River.

The black colobus (Colobus satanas) or Satanic black colobus is an Old World monkey belonging to the Colobus genus.

The Western Lowland Gorilla, Chimpanzee, Black Colobus, Mandrill and Golden Potto have all been listed on the IUCN Red List.

On white sands in Cameroun, where tannin levels are much higher, black colobus monkeys avoid all canopy trees and feed selectively on gap species and, unlike other colobines on other soils, have to feed on seeds, which make up half their diet.

ARKive - images and movies of the Black colobus (Colobus satanas)