American Mastiffs are generally calm and quiet dogs. They are loyal and loving dogs who are not usually aggressive unless they need to protect their owners. In a dangerous situation the American Mastiff will stand in between the person the dog is familiar with and the intruder. Though they probably would not choose to exercise daily, a steady routine is better for their health.
Their grooming is easy due to their short-haired and smooth coat. Though they do shed, they shed no more than the average dog. Contrary to some other large breeds, this breed of Mastiff dog will get along perfectly well in any living environment as long as they are exercised daily.
The American Mastiff is a large, massive and powerful dog. The head is wide, heavy and rectangular in shape. The eyes are amber in color, the darker the better. The ears are rounded and set high on the head. The muzzle is medium sized, well-proportioned to head and has black mask. The nose is black. It has a scissor bite. The neck is powerful and slightly arched. The chest is deep, broad and well-rounded, descending to the level of elbows. The ribs are well-sprung and extend well back. The back is straight, muscular and powerful, with well-muscled and slightly arched loins. The forelegs are strong, straight and set well apart. The hind legs are wide and parallel. The feet are large, well-shaped and compact with arched toes .The tail is long, reaching the hocks. Puppies are usually born dark and lighten as they grow older, some becoming very light fawn by age one; some retain dark hairs. Colors are fawn, apricot and brindle. White markings acceptable on feet, chest and chin/nose. Temperament: Dignity rather than gaiety; quiet, calm, loving and loyal. Protective, but not aggressive.
The American Mastiff loves children and is totally devoted to its family. It is non-aggressive except in those instances when its family, especially the children, are threatened. In those instances they become courageous defenders. They are wise, kind and gentle, patient and understanding, very loving with their own people, neither shy nor vicious, they are loyal, and devoted. Since these dogs are of the Mastiff type and grow to be very large, this breed should only be with an owner who knows how to display strong leadership. The objective in training this dog is to achieve pack leader status.It is a natural instinct for a dog to have an order in their pack. When we humans live with dogs we become their pack. The entire pack cooperates under a single leader; lines are clearly defined and rules are set. You and all other humans MUST be higher up in the order than the dog. That is the only way your relationship can be a success.
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