Three-toed sloths have a symbiotic relationship with moths and algae. Sloths are the quintessential couch potatoes of the rainforest, and these sluggish tree-dwellers also serve as a hotel for moths ...

Sloths may seem like quirky tree-dwellers today, but their past reveals a dynasty of giants that once roamed the Americas.

Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species. But ...

Scientists have solved the evolutionary puzzle of how sloths went from enormous ground-dwelling giants to the small, famously-laidback tree-climbers of the modern day. The study, by an international ...

New research on the evolutionary relationships between tree sloths and their extinct giant relatives is challenging decades of widely accepted scientific research. A team of international researchers ...

Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to digest a meal and poop just once a week. Their closest living relatives are ...

The sloth was caught on camera by a GoPro propped in a tree in Nicaragua. — -- A sloth spotted in the wilds of Nicaragua by an American tourist was just trying to take a nap, but first, it had to ...

Sloths are the quintessential couch potatoes of the rainforest, and these sluggish tree-dwellers also serve as a hotel for moths and algae. Three-toed sloths descend from the trees once a week to ...

A new study challenges decades of scientific opinion concerning the evolutionary relationships of tree sloths and their extinct kin. Scientists have solved the evolutionary puzzle of how sloths went ...