A Geoffroy`s spider monkey Ateles geoffroyi is seen in Peten, Guatemala. Also known as the black-handed spider monkey, is a species of spider monkey, a type of New World monkey, from Central America, parts of Mexico and possibly a small portion of Colombia. There are at least five subspecies. Some primatologists classify the black-headed spider monkey found in Panama, Colombia, and Ecuador as the same species as spider monkey. It is one of the largest New World monkeys. Its arms are significantly longer than its legs, and its prehensile tail can support the entire weight of the monkey and is used as an extra limb. Its hands have only a vestigial thumb, but long, strong, hook-like fingers. These adaptations allow the monkey to move by swinging by its arms beneath the tree branches. spider monkey lives in fission–fusion societies that contain between 20 and 42 members. Its diet consists primarily of ripe fruit and it requires large tracts of forest to survive. As a result of habitat loss, hunting and capture for the pet trade, it is considered to be endangered by the IUCN. Spider monkey lives in various types of forest. Higher densities are generally found in areas containing evergreen forest. Although they do not use tools, spider monkeys, are regarded as intelligent primates. A study performed in 2007 concluded they were the third most intelligent nonhuman primate, behind only orangutans and chimpanzees, and ahead of gorillas and all other monkeys.

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