The North American Mastiff aka NAM is a designer mastiff breed Created by Monsterpiece Kennel in Missiouri. They are recognized by the ICA and ADF working on AKC Registry. This breed is 15 years in the making and only getting better. The North American Mastiff is a large dog that has a good family temperament but knows when it is time to work. These dogs are loyal companions and fierce protectors. They will snuggle you in bed and warn off any unwanted visitors when needed. Males run anywhere fro