Contrary to their sluggish land image, sloths are surprisingly adept swimmers, moving up to three times faster in water.

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 move slowly as a survival tactic. This conserves their energy and helps them hide from predators. Their diet of leaves requires slow digestion. This low metabolic rate suits their bodies. Long ...