You have probably heard of a murder of crows. What about a parliament of owls? A shrewdness of apes? A bloat of hippopotamuses? Who came up with these terms?

A while ago, the internet went crazy over the story of a five-month-old baby girl and her best friend: a pet sloth.

Sloths are famous for their unusual and bizarre bathroom habits.

What does it really mean to be a sloth? Why are they so slow? And why does it work?