Another unique mangabey feature is their white eyelids. Male 11-14kg, some can reach 20kg. Female 6-8 kg. Females form the core, led by a dominant female. 1 or more males may associate with the group.
Mangabeys belong to the family cercopithicidae.
There are 4-9 species, taxonomic disputes continue. Although they look similar, the mangabey species have different behaviour and take up different niches. The last two are sometimes assigned the genus Lophocebus instead. All mangabeys prefer fruits which form the bulk of their diet. This is supplemented by other vegetation and animal protein.