Bats sleep 18-20 hours per day.
5
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
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
Sheep, goats, octopuses, and toads have rectangular pupils.
7
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25