What kind of monkey throws feces




















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Common chimpanzee in the Leipzig Zoo. Image credit: Thomas Lersch, via Wikipedia. More information: The neural and cognitive correlates of aimed throwing in chimpanzees: a magnetic resonance image and behavioural study on a unique form of social tool use, Phil. B 12 January vol.

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These animals live in the forests of Brazil, and they don't have social hierarchies in their groups. This even-footing might make aggression unnecessary, at least for those monkeys, Strier said. Chimpanzees Pan troglodytes , on the other hand, do have hierarchical social groups. They are known to drag tree branches or throw rocks when they are frustrated or annoyed or when they want to display dominance.

Throwing rocks and branches is part of how these animals communicate, and being a good communicator can be an advantage in their society. For example, a male chimpanzee who can get back on the good side of an alpha male after a fight — meaning he's likely a good communicator — might not get shunned from the group.

Experts think that in male chimpanzees reconciling after an aggressive conflict leads to social bonding and helps to establish the hierarchy. While the species is still prone to throwing things, they usually stick to rocks or branches when they want to express their annoyance. Ease of access is not the only reason a chimpanzee will launch feces. When a chimp is in captivity, throwing poop is likely to cause a reaction—either from zoo employees or guests.

Chimps will begin to associate the act throwing fecal matter to a response usually surprise or horror. In tossing their crap, chimps realize that they can control the behavior of others to some degree.

If they throw an overhand turd, people will run. While it would be easy to associate throwing poop with limited intelligence, the opposite might be true.

In a study published in Philosophical Transactions of the Royal Society B , researchers at Emory University found that chimpanzees who had good aim when throwing things had more development in their motor cortex, where physical actions are coordinated.

Their left brain hemispheres, which control right-handed behavior, demonstrated more development. The rocket-armed chimps were also typically better communicators within their social groups.



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