Fine photographs of sloths, their habitat, and other animals and birds work in tandem with primary and secondary text to introduce readers to sloths. Full of interesting facts, including additional back matter for those who want more "sloth science."

Did you know that sloths got their sleepy reputation from scientists who only observed them in zoos? In the wild, sloths sleep about as much as human teenagers - 9-10 hours. Koalas have the sleepy record! ( )