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13 of the cutest tree-dwelling animals in the world

By: Bryan Nelson on June 3, 2013, 5:34 p.m.
A sloth hanging from a branch

Photo: jdross75/Shutterstock

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Sure, their hair is a bit nappy looking, but that smile and sweet demeanor makes them irresistible nonetheless. Sloths seem like the most content of all tree-dwelling creatures, leisurely going about their way, never in a rush. Though they might resemble primates, they're actually most closely related to anteaters. Their sedentary lifestyle is an adaptation to their diet, which consists mostly of low-calorie leaves. By moving so sluggishly, sloths conserve their energy.

Oddly, sloths might also be among the best swimmers of all tree-dwelling animals. They are known to regularly swim across rivers and streams, especially during the flood season in the Amazon basin, to reach new feeding grounds.