It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Sloths take two weeks to digest their food.
243
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
The elephant brain weighs about 6,000g.
274