The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
When dragonflies mate, their tails form a love heart.
22
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
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
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
When cats are happy, they may squeeze their eyes shut.
10