Brown Woolly Monkey (Lagothrix lagotricha)


I only saw one individual, presumably the alpha male of this group of Wooly Monkey, while boating on the Yarapa River in Northern Peru.

This species lives in groups ranging from 2-6 individuals, which branch off from the main group into different trees. Woolly Monkeys have a diet that consists primarily of fruit, although leaves, seeds, flowers, and invertebrates are also consumed.

Reproduction in these groups is characterized as promiscuous. In other words, one male will generally mate with all of the females and vice-versa. Shortly after females reach maturity, they leave their natal groups (where they were born) as a means of avoiding inbreeding. Males will stay in their natal groups for life.

They are listed as vulnerable by IUCN.

The Woolly Monkey’s predators include several species of eagle and cats like the ocelot and jaguar. However, its main predator is humans who hunt the species both for meat and for sale as pets. It is believed that over-hunting and habitat encroachment, both caused by increasing human populations, are the key factors behind the species’ recent decline
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