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
In Australia, there are spiders big enough to eat snakes.
20
The elephant brain weighs about 6,000g.
274
Mosquitoes don't just bite you, they also pee on you.
11
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