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
Condoms were originally made of animal intestines or linen.
347
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Alligators can live up to 100 years.
337
Squirrels forget where they hide about half of their nuts.
698
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34