[1] The diet of Preuss's monkey is primarily fruit, leaves and insects, although the species occasionally raids human crops.

Preuss's monkey is an endangered species, due to habitat loss and hunting.

It is one of the species that live in the Guinean Forests of the West Africa Biodiversity Hotspot.

Preuss's monkey is known to occur in captivity at the Centre for Education, Rehabilitation, and Conservation of Primates and Nature (CERCOPAN) in Cross River State, Nigeria and the Limbe Wildlife Centre in Limbe, South-West Region, Cameroon.

There are two subspecies of Preuss's monkey: Media related to Cercopithecus preussi at Wikimedia Commons