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
Sharks have been on the planet longer than trees.
14
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10