Fact of the Day

Did you know that many different groups of animals have their own name when they are in a group.
Some you might know:
A herd of cows
A pack of dogs
A school of fish.
BUT Did you know these unusual ones?

A clowder of cats                              A murder of crows
  A Parliament of Owls

 An ambush of tigers
 A business of ferrets

Do you know any others? Write one that you do know in the comments.