There are approximately three chickens for every human on Earth.
13
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
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
In Australia, there are spiders big enough to eat snakes.
20
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5