Sloths are very popular slow moving land mammals. They are mostly found living in central and south America. Often, sloths are the size of a large cat and are well known for their slow moving, laid-back approach to life. They are so incredibly well-known simply because they always look like they are having a chill time!
"Three-Toed Sloth" by NH53;
used with permission under CC BY 2.0
Generally, while sloths are not thought to be aggressive, when cornered, they have been known to use their large, hollow claws--designed to help them hang in the trees--to scare off predators.
Sloths have also been seen moving much quicker than expected when hunted or disturbed, but generally, they move about 2 meters per minute on the ground and approximately 3 meters per minute in a tree.
However, sloths are surprisingly good swimmers, with the average sloth able to hold its breath for up to 40 minutes!