When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
There's a rare breed of pig that looks like a sheep.
14
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9