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
Cats sleep for 70% of their lives.
8
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
A scorpion can hold its breath for up to 6 days.
19
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79