Sloths are famous for their exceptionally slow motor skills and petite faces that seem to beam with an almost natural smile. However, less commonly known is the unusual bathroom habit of certain sloth ...

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 ...

A tree-dwelling sloth’s climb down to ground level for its weekly bathroom break may not be pointless daintiness. The trip is risky and (for a sloth) energetically expensive. Yet the effort could be ...