Female kangaroos have three vaginas.
2
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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Ants have tiny magnetic compasses in their antennae which help them navigate.
9
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
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