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
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The elephant brain weighs about 6,000g.
274
When cats are happy, they may squeeze their eyes shut.
10
Alligators can live up to 100 years.
337
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456