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
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
The head of a jellyfish is called the "Bell."
6