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
A puppy is born blind, deaf, and toothless.
16
When you shave a guinea pig it looks like a little hippo.
19
Dogs have been man's pet for over 14,000 years.
224
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Condoms were originally made of animal intestines or linen.
347
Cats and dogs can hear ultrasound.
350