A herd of cows. A school of fish. Assuming you don't live under a rock, you've heard of those. Maybe you even know that biologists call a group of whales a pod. But what do you call a group of emus? How about hyenas? And what animal is collectively described by the term "clowder?"
Yes, some names for groups of animals are pretty surprising. Here are 19 of the weirdest ones, with some help from USGS and the OED. Whip them out at trivia night, or share them with the animal lovers you know.