Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
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 hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats sleep for 70% of their lives.
8
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Ants have tiny magnetic compasses in their antennae which help them navigate.
9