International Sloth Day celebrates the fascinating biology, ancient ancestors, hidden ecosystems, and remarkable adaptations ...

Adult Hoffmanns two-toed sloth (Choloepus hoffmanni) coastal mangroves, Panama, Central America Correction appended Jan. 23, 2014 Among the greatest mysteries of the tropical rainforest are the ...

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 ...

Are sloths really as slow as people say? Are they equally slow in all environments? Read slowly to find out more about these calm and smiling animals. Sloths do everything their own way: slowly.