People always underestimate the movement of these dogs. They are not meant to run long distance but can catch in a short distance. This boy has matured into such a beautiful dog. beast big dogs dog Guard dog GUARD DOG ON DUTY huge dog huge Neapolitan mastiff huge Neo INU mastino mastino napoletano mastinos del manicomio mastinosdelmanicomio neapolitan mastiff neapolitan mastiff puppies Neapolitan Mastiffs puppy show quality so... ナポリタン・マスティフ