Black-faced Black Spider Monkey

The Black-faced Black Spider Monkey has thin, long limbs. One of its main features is the prehensile, hairless tail on the underside, which functions as a fifth limb. The tail is used for balancing and holding onto tree branches while moving, and often for holding food.

They are diurnal and arboreal animals. These primates have very expressive means of communication, through facial expressions and exuberant body movements in situations of aggression, play, or dominance. One of the most common vocalizations is that of adult males when communicating with neighboring subgroups and larger social groups. They have a gestation period of 7.5 months, and the subsequent birth only occurs after 2 to 5 years.

Black-faced Black Spider Monkey reproduce infrequently, have only one cub per litter, and only reach sexual maturity at the age of 4 - factors that make it hard to increase the species' population. Additionally, human threats such as hunting, and deforestation mean that the number of wild individuals continues to decline steadily. Greater control or a ban on hunting Black-faced Black Spider Monkey in their natural habitat may improve the species' conservation status however it is highly unlikely that this effort alone will be enough to recover the population in its entirety.