Cats sleep for 70% of their lives.
8
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
Cows can sleep standing up, but they can only dream lying down.
745
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8