A group of unicorns is called a blessing.
304
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132