As a result, Geoffroy's spider monkey has disappeared from some areas where it was once common.

This may help explain why male Geoffroy's spider monkeys form strong bonds.

In captivity, Geoffroy's spider monkey can live at least 33 years.

However, predation of Geoffroy's spider monkey has not been observed by researchers.

Geoffroy's spider monkey is one of the largest New World monkeys.

Geoffroy's spider monkey lives in fission-fusion societies that contain between 20 and 42 members.

Geoffroy's spider monkey uses several forms of nonvocal communication.

Higher densities of Geoffroy's spider monkeys are generally found in areas containing evergreen forest.

Geoffroy's spider monkey can support its weight suspended by its tail and often does so when feeding.

Geoffroy's spider monkey forages over large tracts of forest in search of food.

In some locations, Geoffroy's spider monkey interacts with the white-headed capuchin.

Geoffroy's spider monkey lives in various types of forest, including rains, semideciduous and mangrove forests.

In addition to walking or running on four limbs and climbing, Geoffroy's spider monkey uses several forms of suspensory locomotion.

Although they do not use tools, spider monkeys, including Geoffroy's spider monkey, are regarded as intelligent primates.

Kellogg and Goldman differentiated Geoffroy's spider monkey from other species by its dark black head, hands and wrists.

Sounds produced by Geoffroy's spider monkey include barks, whinnies, squeals, squeaks and screams.

The long arms and hook-like hands allow Geoffroy's spider monkey to brachiate, that is, swing by its arms beneath the tree branches.

Geoffroy's spider monkey is arboreal and diurnal, and mostly inhabits the upper portion of the forest.

Geoffroy's spider monkey sometimes rubs a mixture of saliva and ground lime tree Citrus aurantifolia leaves on its fur.

Geoffroy's spider monkey was extirpated on Barro Colorado Island in Panama.

Studies have indicated the Geoffroy's spider monkey uses suspensory locomotion less frequently than other spider monkey species.

Studies have indicated at least some Geoffroy's spider monkey populations use suspended postures less frequently when feeding than other spider monkey species.

Geoffroy's spider monkey eats mostly fruit - preferably ripe and fleshy - and spends 70% to 80% of its feeding time eating fruit.

Geoffroy's spider monkey is listed as "Endangered" by the IUCN, mostly due to habitat loss.