It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The largest earthworm on record was found in South Africa and measured 22 feet.
151
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
Female kangaroos have three vaginas.
2
Tigers can see 6 times better at night than humans.
305