Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
One in three dog owners say they have talked to their pets on the phone.
427
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9