Add Yahoo as a preferred source to see more of our stories on Google. For centuries, people encountering sloths for the first time have reacted by ridiculing them. In 1526, Spanish conquistador ...

Footage of one of STRI's Bocas del Toro Research Station's resident sloths climbing the trees at the Station. The star of this video is a female Three-toed sloth (Bradypus variegatus). Video by: J.P.

Two-Toed and Three-Toed Sloths Aren’t That Closely Related Credit: Getty Images Despite their similar names, the two types of sloths belong to different families and have different evolutionary ...

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 the ...

Sloths look simple from a distance: slow mammals, quiet days in trees, same route, same rhythm. That picture is wrong in useful ways. The group itself is more diverse than most people assume, with two ...

New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct. By Jeanne Timmons Ground sloths emerged in South America tens of million ...

Larisa R. G. DeSantis received funding from the National Science Foundation, the Guggenheim Foundation, and Vanderbilt University. DeSantis is also a research associate at the La Brea Tar Pits and ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Everybody loves sloths, and whenever we talk ...