Jellyfish as a species are actually older than dinosaurs and sharks.
383
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Early American humans hunted car-size armadillos and used their shells for houses.
12
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
The Platypus used to be considered a myth like Bigfoot and the Yeti.
18