Squirrels forget where they hide about half of their nuts.
698
The reindeer is the only mammal that can see UV light.
17
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
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
A dairy cow can produce more milk when listening to music.
446
Denmark has twice as many pigs as there are people.
66