Sloths have double the grip strength of humans and other primates

A sloth hanging from a tree on one leg can exert a greater grip on its body weight than a primate.

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January 10, 2023

Finley, one of the sloths in Costa Rica's sloth sanctuary. Credit: Ignacio Moya

Finley the sloth tested for grip strength at a sloth sanctuary in Costa Rica

Ignacio Moya

With one leg, sloths can exert a pound-for-pound grip that far exceeds what humans and other primates are known to gather with their limbs.

Melody Young of the New York Institute of Technology, who studies lazy danglers, says sloths like to cling to the sides of their bodies. To free himself from one, he, a cat-sized creature, often “has to have two other researchers grab each leg and pry it open. [its] …

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