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
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
Rattlesnake mating sessions have been known to last more than 22 hours.
232
The elephant brain weighs about 6,000g.
274
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
One in three dog owners say they have talked to their pets on the phone.
427
Ants have tiny magnetic compasses in their antennae which help them navigate.
9