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.

A cooling, drying climate turned sloths into giants – before humans potentially drove the huge animals to extinction. Today’s sloths are small, famously sluggish herbivores that move through ...

Today, sloths are slow-moving, tree-dwelling creatures that live in Central and South America and can grow up to 2.5 feet long. Thousands of years ago, however, some sloths walked along the ground ...

If in need of a different perspective, consider seeking out some sloth-to-human empathy, writes Patricia Schultheis.

US health officials are warning travelers about a potentially deadly insect-borne virus known as sloth fever. Pregnant women might be at risk.

The survival of sloths is under threat due to climate change, according to a new study. The famously slow-moving — and adorable — creatures of Central and South America could die out if ...

A family of sloths take their food truck to the big city in this animated movie directed by Ricard Cussó and Tania Vincent.

Visitors to Minnesota’s Como Park Zoo witnessed a sloth give birth. Sago, a Hoffman’s two-toed sloth, surprised everyone, including the zoo staff.

Sago - a Hoffmann's two-toed sloth - delivered her little critter on Wednesday while on exhibit in the zoo's primate building. Both mom and baby are doing great.

CLEVELAND, Ohio — A female sloth bear cub was born at the Cleveland Metroparks Zoo, which is now holding a vote allowing residents to name the new arrival.

A grizzly old time is being had at the Ohio zoo as staff tend to a newborn sloth bear and drum up help for what to name her.

Sloths are among the most beloved of jungle animals. The famously sluggish and furry tree-dwellers are found throughout Central and South America, giving off the vibe of relaxed lifestyle. Yet a ...