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 group of kittens is called a "kindle".
10
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
When dragonflies mate, their tails form a love heart.
22
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Sharks have been on the planet longer than trees.
14
The elephant brain weighs about 6,000g.
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