There are two species in this family. They are found in tropical rainforests in Central and South America.

Two-toed sloths are larger than three-toed sloths. They have round heads, small ears, long forelimbs and hind limbs, and a stumpy tail.

Two-toed sloths have two long claws on their front paws and three claws on their rear paws.

They have long, grayish-brown fur that takes on a greenish color because of the algae that grow on it. Their fur grows from their stomach and curls around to their back.

Two-toed sloths hang upside down in trees, and their backward-growing fur helps rain run off of them.

They are herbivores and eat leaves, buds, fruit, and twigs. They are nocturnal and spend most of their time sleeping.