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 male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Condoms were originally made of animal intestines or linen.
347
The head of a jellyfish is called the "Bell."
6
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Jellyfish as a species are actually older than dinosaurs and sharks.
383
When dragonflies mate, their tails form a love heart.
22