Sharks have been on the planet longer than trees.
14
The elephant brain weighs about 6,000g.
274
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The male seahorse carries babies and 'gives birth' to them instead of the female.
7