I went to Phoenix,Arizona with my family this winter break and we went to an aquarium and in there their was a sloth named bubbles and he was super cute and i got to hold him and feed him leaves, and i found out that bubbles was a bradypus sloth. Here are some fun facts about sloths. sloths may be slow on ground but they are actually great swimmers, algae grows on sloths fur which camouflages them and helps them hide from predators,a long time ago there where sloths the size of elephants that were extremely aggressive called the megatherium sloth.