Sheep, goats, octopuses, and toads have rectangular pupils.
7
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
The largest breed of rabbit is the Flemish Giant.
65
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2