Sharks have been on the planet longer than trees.
14
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Dogs have been man's pet for over 14,000 years.
224
The elephant brain weighs about 6,000g.
274
When cats are happy, they may squeeze their eyes shut.
10