Sergeant Stubby, War Hero
Sergeant Stubby was the most decorated war dog of World War I, and the only dog ever to be promoted to Sergeant. That's right: you don't ask this dog to give you a paw, you give him a paw in the form of a salute. Stubby wasn't just some mascot for morale—he was a genuine warrior who profoundly affected the survival of his regiment. He saved his fellow soldiers from mustard gas attacks, found and consoled the wounded, and even captured a German spy (can you imagine a spy explaining to their superior that a dog caught him?). It just goes to show, big heroes sometimes come in little bodies.