Geoffroy’s woolly monkey spends most of its time high in the tree tops, moving through the upper canopy as it searches for fruit in the crowns of large trees (10). It is not as fast as other South American monkeys, such as the spider monkeys, and rarely leaps between trees, but it can hang suspended by only its tail if it needs to bridge a large gap (5). Although primarily a fruit eater, Geoffroy’s woolly monkey supplements this diet with young leaves and seeds during times of fruit scarcity (10).
Geoffroy’s woolly monkey lives in mixed-sex groups of 11 to 25 individuals (2) (7). The group moves together around the home range, sharing the best feeding spots with other Geoffroy’s woolly monkey groups in the area. There is little aggression between groups and they often forage close together and communicate with clucking calls. The males also make ‘neighing’ calls which can be heard up to 400 metres away (2).
Geoffroy’s woolly monkey usually lives to about 26 years old (2). The oldest males, who are also the most dominant, are very tolerant of other males in the group and allow the females to mate with more than one male (2). In primate terms, the length of mating in Geoffroy’s woolly monkey is very long, lasting an average of four minutes (2).