Although many mistake them for monkeys or even bears, sloths are not primates, much less carnivores. These slow-moving, ...

Explore 15 wild animals that are rarely seen and often live in remote or protected habitats. These extraordinary species, ...

Among three-toed sloths, the pygmy three-toed sloth is critically endangered, with fewer than 100 individuals remaining in the wild on Isla Escudo de Veraguas off Panama.

A Linne’s two-toed sloth pup was born at the Denver Zoo Conservation Alliance on Thursday.

Sloths, the world's slowest mammal, have been around for 64 million years. Sharyn Alfonsi traveled to Costa Rica to learn more about how they've survived.