Sloths look slow in a way that almost doesn’t feel real, but their sluggish movement isn’t a flaw or a weakness. Every part of their body is built around saving energy, avoiding danger, and surviving ...

Sloths are famous for moving slowly, but that extreme pace has unexpected biological consequences. Because they spend so much time nearly motionless, algae can grow directly in their fur, turning the ...

Long before today’s tree-dwelling sloths, a 4-ton giant roamed South America — and it may have stood and fought like a bear.

LA FORTUNA, Costa Rica -- A child zooming down a zipline through a rainforest in Costa Rica collided with a slow-moving sloth clinging to the cable. It happened Sunday at the Go Adventure Arenal Park ...

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.

If the world is moving too fast, Thursday is the day to sit back and take it slow. While sloth may be one of the seven deadly sins, Thursday celebrates the animal that has won the hearts of many, the ...

Here are five animals that have turned inactivity into an evolutionary flex.

CC0 Usage Conditions ApplyClick for more information. This video was created for the Get a Head Start with the Smithsonian (GHSS) program. This National Zoo-based project brings the entire Smithsonian ...