Cercopithecus neglectus, commonly known as the De Brazza's monkey, is a primate species native to the dense forests of Central Africa. Recognizable by its distinctive white beard and orange crown, this monkey is known for its secretive nature and adeptness at evading predators. It primarily resides in swampy forests and is a frugivore, feeding on fruits, seeds, and occasionally small animals. Its well-developed cheek pouches are used to store food as it forages.

Cercopithecus neglectus, commonly known as the De Brazza's monkey, is native to Central Africa. Its geographical distribution includes countries such as Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Gabon, and parts of Uganda and Kenya.

The De Brazza's monkey typically inhabits dense, tropical forests, particularly in areas near rivers and swamps. These environments provide the dense canopy and underbrush that the species uses for foraging and protection from predators. The climate is generally equatorial, with high humidity and significant rainfall throughout the year, supporting lush vegetation.

Cercopithecus neglectus is arboreal and terrestrial, spending significant time both in trees and on the ground. It is an omnivore, feeding on a diet that includes fruits, seeds, leaves, and small animals. Its role in the ecosystem includes seed dispersal, which contributes to forest regeneration and diversity.