The three-toed sloth emits a long, high-pitched call that echoes through the forests as “ahh-eeee.” Because of this cry these sloths are sometimes called ais (pronounced “eyes”).

These things might make them unsuitable to survive in a warming world, especially for populations living in high-altitude ...

The extinct giant ground sloths were some of the only mammals that had digestive systems large enough to process the huge avocado seeds whole. They feasted on the fruit and then dispersed the ...

Following is a transcript of the video. Narrator: If there's one thing you know about sloths, it's that they're, well, slow. But that doesn't mean they're boring. In fact, sloths are one of the ...

The Hoffman's two-toed sloth is one of the world's slowest mammals—so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of ...

In the rainforest, sloths move very slowly between trees high in the canopy, feeding on young leaves. They descend only to defecate, about once every five days. But with increasing habitat loss and ...