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
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
A 42-foot sperm whale has about 7 tons of oil in it.
209
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492