Lobsters have blue blood.
476
Parrot parents "name" their children with a signature call.
112
Sheep, goats, octopuses, and toads have rectangular pupils.
7
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Sloths take two weeks to digest their food.
243
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
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82