The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Mosquitoes don't just bite you, they also pee on you.
11
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A dairy cow can produce more milk when listening to music.
446
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82