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
Denmark has twice as many pigs as there are people.
66
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Cows can sleep standing up, but they can only dream lying down.
745
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27