Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
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
Lobsters have blue blood.
476
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The Pistol Shrimp can snap its claws together to create a sound of 218 decibels, louder than as supersonic jet at full speed. It only lasts for 1 millisecond. The snapping action also creates a bubble that is greater than 5000 Kelvin, close to the surface temperature of the sun.
21
Condoms were originally made of animal intestines or linen.
347
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1