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
When dragonflies mate, their tails form a love heart.
22
Ants tend to survive in a microwave because they find the coolest spot and wait!
17
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Jellyfish as a species are actually older than dinosaurs and sharks.
383
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6