Smithsonian National Zoological Park l Friends of the National Zoo



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two-toed sloth
Jessie Cohen, NZP photographer

Two-toed Sloth

Solitary by nature, sloths spend most of their lives hanging upside down from trees—sleeping, eating, mating, and even giving birth upside down. Because of this, their organs are in different positions from other mammals.

In the wild, green algae often covers sloths' gray-brown fur.

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