When dragonflies mate, their tails form a love heart.
22
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
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