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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
In Australia, there are spiders big enough to eat snakes.
20
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45