At first glance, this mammal looks like a horse gone terribly wrong. But, in reality, Chalicotherium is far from a botched ...

Two sloth bear cubs were born at the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) on December 7—marking the Zoo’s first sloth bear births since December 2013.

For the Smithsonian National Zoo and Conservation Biology Institute (NZCBI), Christmas came early in 2025. Zookeepers were ...

The Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI) announced Jan. 6 that two sloth bear cubs were born ...

When you picture the jungle, your mind might jump to roaring tigers, monkeys swinging wildly from tree to tree, or bright ...

Sloths have been depicted as the slowest-moving mammals in the world, and have been stuck with that reputation. However, sloths are amazing animals. They may seem innocent and defenseless, but sloths ...

One of the most popular animals around is the sloth. They are so relaxed and laid back, and they always look like they're smiling. They're also very slow, which makes getting anywhere a long process.

Georgia's Zoo Atlanta is celebrating the birth of a Hoffmann's two-toed sloth earlier this month. The sloth infant, which has not yet been publicly named, was born Aug. 9 to its mother, Nutella, 7, ...

A sloth scientist, her tree-climbing BFF, and their dog work to save Costa Rica’s sloth populations in groundbreaking ways, all while capturing rarely seen wild sloth behaviors and reimagining what it ...

One Dec. 21, Lorenzo was found “poorly responsive” and was taken to the zoo’s L3 Harris Animal Care Center for an examination. It was found he had a declining body condition along with dehydration and ...

A new documentary explores how slowness can be a superpower, helping animals camouflage, evade predators, maintain a low ...