Squirrels forget where they hide about half of their nuts.
698
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
A cow produces around 200,000 glasses of milk in her lifetime.
373
When dragonflies mate, their tails form a love heart.
22
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
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
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4