The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Condoms were originally made of animal intestines or linen.
347
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
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