[22] Colour patterns in the Cercopithecus provide unique visual identities for each genus which allowed the development of the polyspecific association of the guenon communities.

[20] Nocturnal predators usually come from the ground, making the three species prefer to leave the dense forest at night and sleep in a large tree's crown.

[17] The C. cephus has surprisingly large cheek pouches which can carry the same amount of food as its stomach, which allows it to store lots of fruits for later eating in a less dangerous area.

The regular time for new births comes at the end of the rainy period of the year due to the subsequent rich food season.

[17][27] C. cephus can be fatally overwhelmed by the poliomyelitis virus (e.g., Hartford and SK strains) and can easily generate cross-contamination with other species, such as the Rhesus macaque (Macaca mulatta).

[21] The susceptibility of C. cephus to getting infected by poliomyelitis is similar to that of the green monkey (Cercopithecus sabaeus) and the Rhesus macaque.

[8] Within the genus, C. diana, C. neglectus, C. mona, C. hamlyni, C. nictitans, and C. cephus consist of six special chromosome fissions, which may lead them to a monophyletic clade.

[8] However, what triggers the polyphyly remains unknown; itcould be inherited from ancestral hybridization or due to incomplete lineage sorting.

[8] On the east side of Gabon, researchers have captured mammals like bats, C. cephus, and Mandrillus sphinx to study the infection rate of the malaria parasites in the genus Hepatocystis.

The infected bats would eat the monkey's left-over banana skins, which also allowed the two species to be vectored by the mosquitos in the same area.

[32][6] The serological survey deployed a specific Luminex-based assay to detect the Immunoglobulin G antibody in different non-human primates (NHPs); and the result has shown only one C. cephus has produced antibodies to the Sudan ebolavirus (SUDV), which means the C. cephus group and all the tested Cercopithecus groups can be considered as intermediate hosts for Ebola virus.

[33] Avelin Aghokeng and his colleagues identified the two distinct SIVmus lineages (SIVmus-1 & SIVmus-2) infecting C. cephus isolated in the animals living in the same area.

[33] The study of SIVmus has shown the virus's strength of survivorship and the risk of infecting human through the bushmeat trading market.

[31] Road construction has fragmented the undisturbed areas in Western Africa, which threatens the Cercopithecus living conditions in general because many of them are sympatric.

[35] Unfortunately the rocketed infrastructure implementation in Western Africa come with a large scale of deregulations, which indicate low EIA credibility in the related road constructions, which means the REZs may not be considered at all in most areas.

On the other hand, the bushmeat market is highly risky in spreading the discussed zoonoses; and may be even riskier due to the rapid road construction in West Africa.