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 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
Condoms were originally made of animal intestines or linen.
347
When dragonflies mate, their tails form a love heart.
22
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82