Bluebirds cannot see the color blue.
40
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
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Turtles can live for more than 100 years.
84
Cats cannot taste sweet things.
22
It's possible to lead a cow upstairs, but not downstairs.
50