When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Sharks, like other fish, have their reproductive organs in their chests.
248
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Sloths take two weeks to digest their food.
243
Moths are unable to fly during an earthquake.
328