Sharks have been on the planet longer than trees.
14
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
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
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
Squirrels forget where they hide about half of their nuts.
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