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
The penguin is the only bird that can swim, but cannot fly.
1
A full-grown bear can run as fast as a horse.
35
Sloths take two weeks to digest their food.
243
An elephant trunk has no bone but 40,000 muscles.
24
Termites work 24 hours per day and they do not sleep.
57