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
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
It has been scientifically proven that stroking a cat can lower one's blood pressure!
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