Sheep, goats, octopuses, and toads have rectangular pupils.
7
The seahorse is the only fish to have a neck.
12
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 sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Gorillas can catch human colds and other illnesses.
205
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492