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 ...

There are millions of sloths in Costa Rica. But with high levels of deforestation over the past few decades and increasing contact with humans, the population is taking a hit. While no official stats ...

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 ...

Sloths spend most of their time high up in the tree canopies of the tropical rainforests of Central and South America, including Brazil and Peru. They curl up in the branches or hang upside down ...