Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Sharks have been on the planet longer than trees.
14
Sloths take two weeks to digest their food.
243
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
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Two dogs were among the Titanic survivors.
262