Gray-bellied night monkey

The gray-bellied night monkey, Aotus lemurinus, also called the lemurine night monkey or grey-legged douroucouli, is a small New World monkey of the family Aotidae that lives in tropical and subtropical forests of northwestern South America. Its small round head is striped with black and dominated by two large brown eyes, giving it an owl-like face, and its dense woolly gray coat is yellow to orange on the underside, with a dark tail that is not prehensile. Adults reach about a kilogram and a third. It is nocturnal and arboreal, eating mainly fruit but also leaves, nectar, insects and sometimes small birds and mammals. Pairs form lasting bonds and the male does most of the infant care, with one young born each year after about 133 days of gestation. Several forms once counted as its subspecies are now treated as separate species, and the species is listed as Vulnerable because of hunting, capture for medical research and habitat loss.