American Mastiff is a breed of dog type mastiff originating in the United States created by Fredericka Wagner of the "Flying W Farms"  by means of the crossing of English Mastiff and Anatolian Shepherd. In 2000 the Continental Kennel Club recognises it as a pure breed of dog.
Height and weight
- Height: Females 28-34 inches. Males 32-36 inches
- Weight: Females 140-180 pounds. Males 160-200 pounds.
On the contrary than other big dog breeds, this mastiff adapts perfectly living in an apartment but must be exercised daily, good with a walk. A small back playground is also sufficient.