Cats and dogs can hear ultrasound.
350
Sheep, goats, octopuses, and toads have rectangular pupils.
7
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
Sloths take two weeks to digest their food.
243
Gorillas can catch human colds and other illnesses.
205