Only 3% of bird species have penises.
0
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
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The seahorse is the only fish to have a neck.
12
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492