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Spider monkey

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Spider monkeys are large primates belonging to the genus *Ateles*. They are part of the Atelinae subfamily within the Atelidae family. These monkeys live in the tropical forests of Central and South America. Their range extends from southern Mexico to Brazil. They primarily live in the high canopy of the rainforest. This upper layer provides them with plenty of food and space.

Spider Monkey, Tortuguero
Spider Monkey, Tortuguero

The physical makeup of a spider monkey is very specialized for life in the trees. They have disproportionately long, spindly limbs. This body shape is why they are called spider monkeys. Their hands are narrow and hook-like. Most species have reduced or nonexistent thumbs. This anatomical feature is why the genus name *Ateles* comes from a Greek word meaning "incomplete."

Spider Monkey Skeleton
Spider Monkey Skeleton

A key part of their anatomy is the prehensile tail. This tail acts like a fifth hand to help them move. The tail can grow up to 75 centimeters long. The tips of the tails are hairless and have skin grooves. These grooves help the monkey grip branches tightly. Unlike many other monkeys, they do not use their arms for balance while walking. Instead, they rely heavily on their tails to stay steady.

Spider monkeys are highly intelligent animals. Recent studies suggest they may be the most intelligent New World monkeys. Their brains are twice the size of a howler monkey's brain of a similar body size. This large brain helps them manage a complex social system. It also helps them remember where to find over 150 different species of plants. They mostly eat fleshy fruits, which make up 71 to 83 percent of their diet.

Spider monkey -Belize Zoo-8b
Spider monkey -Belize Zoo-8b

These primates live in social bands of up to 35 individuals. Sometimes these groups can reach 40 members. A dominant female often leads the group. She is responsible for planning efficient feeding routes each day. During the day, the large group often splits into smaller subgroups. These subgroups usually consist of 2 to 8 animals. This behavior helps reduce competition for food.

Spider monkey hanging out on a boat in Belize
Spider monkey hanging out on a boat in Belize

Social bonds among spider monkeys are very specific. Males often stay in their birth groups for their entire lives. Females usually disperse to join new groups when they reach puberty. This means males in a group are often closely related. They strengthen their bonds through "grappling," which includes hugging and tail intertwining. The strongest social bonds, however, are between females and their young offspring.

BrownSpiderMonkey (edit2)
BrownSpiderMonkey (edit2)

Spider monkeys face many threats in the wild today. Their populations are currently decreasing. They are threatened by habitat destruction from logging and land clearing. They are also hunted by local human populations for food. The IUCN Red List provides specific data on their status. Five species are listed as endangered. One species, the brown spider monkey, is listed as critically endangered.

BrownSpiderMonkey (edit2)
BrownSpiderMonkey (edit2)

Spider monkeys have also played a role in human history and culture. In ancient Maya art, they are often shown carrying cacao pods. They were also part of the Aztec 260-day calendar. The name for the 11th day was "Spider Monkey" (Nahua *Ozomatli*). Even today, spider monkey impersonators appear in some Maya religious feasts. These animals remain a vital and fascinating part of the tropical ecosystem.

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🖼️ Images & Media (6)
File:Spider monkey -Belize Zoo-8b.jpg
Spider monkey -Belize Zoo-8b.jpg
File:Spider Monkey Skeleton.jpg
Spider Monkey Skeleton.jpg
File:BrownSpiderMonkey (edit2).jpg
BrownSpiderMonkey (edit2).jpg
File:Spider monkey hanging out on a boat in Belize.jpg
Spider monkey hanging out on a boat in Belize.jpg
File:Spider Monkey, Tortuguero.jpg
Spider Monkey, Tortuguero.jpg
File:Cylinder Vase with spider monkeys, 650-750 AD, Maya culture, central Peten lowlands, Belize or Guatemala, earthenware with brown-black slip - Gardiner Museum, Toronto - DSC01166.JPG
Cylinder Vase with spider monkeys,...
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