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
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The Basenji dog is the only dog that is not able to bark.
4
Moths are unable to fly during an earthquake.
328
Early American humans hunted car-size armadillos and used their shells for houses.
12
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Squirrels forget where they hide about half of their nuts.
698