When you shave a guinea pig it looks like a little hippo.
19
A giraffe's kick is so powerful that it can decapitate a lion.
216
Lobsters have blue blood.
476
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
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109