Long ago, giant sloths taller than humans roamed the Earth. Today's much smaller sloths are just as interesting--and very cute! Through great photographs and accessible text, beginning readers will love exploring the world of sloths. That means spending lots of time in the jungle's dense trees because sloths' legs aren't very strong! These animals love to hang out and find food for their babies in the trees they call home. Readers will learn that these sleepy creatures do leave trees sometimes: they love to go for a swim!