“The nose print of a dog is like the fingerprint of a person – no two are alike. Get a good relief and you can identify your dog by the mark it leaves behind!” 

I’m guessing your dog’s face will help you distinguish your dog too. Or maybe its general appearance or its collar…  Maybe this fact is supposed to help me track my dog…or help the police if my dog committed a crime or something.  But I would have to rely on the fact that he used his nose to shoot a gun.  Wow!  I can identify my dog by “the mark it leaves behind!”  I don’t know about you, but my dog doesn’t walk around with ink on its nose pressing it up against things.  Or shooting people.