A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Dogs have four toes on their hind feet, and five on their front feet.
179
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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Dogs can make about 100 different facial expressions.
18
Cats and dogs can hear ultrasound.
350