When dragonflies mate, their tails form a love heart.
22
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
A cow produces around 200,000 glasses of milk in her lifetime.
373
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Condoms were originally made of animal intestines or linen.
347