Sloths

Here are some amazing facts about sloths: 

Even though sloths are still for most of the day they don't sleep as much as we think they do. They aren't still because they are lazy, or sleep all the time.They move slowly to defend themselves from predators. Their average speed is one foot per minute.

They also aren't closely related to any specie of animals. They evolved in South America when the continent wasn't connected to any others. They evolved from mammals about 75-80 millions of years ago, and their family tree shows a far away relation to armadillos and anteaters. Now they can be located in South and Central America.

A sloth spends most of it's life up in trees so it's food consists mostly of leaves. Because they don't get enough nutrients from leaves their digestive system can digest food up to a month long.