Cows can sleep standing up, but they can only dream lying down.
745
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
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
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
In Australia, there are spiders big enough to eat snakes.
20
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255