American Mastiff Dog Breed

Thinking of getting an American Mastiff Dog and want to know if an American Mastiff is suitable for your household?

Use the American Mastiff information on this website to learn more about adaptability, health issues, life span of American Mastiff and more.

American Mastiff Facts

  • Name: American Mastiff
  • Other Names: AM Mastiff
  • Origin: United States
  • Breed Group: Working
  • Breed Type: Purebred


American Mastiff Dog Facts

American Mastiff Information

The American Mastiff has a much drier mouth than other Mastiffs. The drier mouth is due to outcrossing the English Mastiff with Anatolian Mastiff, which occurred early in the development of the breed. The American Mastiff is a large, massive and powerful dog. 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 it becomes a courageous defender. The American Mastiff is wise, kind and gentle, patient and understanding, very loving with its own people, neither shy nor vicious. It is 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.

What to do if you lose your American Mastiff

If your American Mastiff Dog or any other pet has gone missing and it does not have an identification tag with a phone number, you can:

1. Report your missing pet details at Pet Reunite website here.

2. Register the lost pet on the Local Facebook Lost Pets Groups Here.

3. Call the local vets to see if anyone has brought in your lost pet.

4. Contact the RSPCA or Visit the RSPCA Lost Pets website and complete a Lost Pet Report.

5. Visit Lost Pets Pages of Animal Pounds.

What to do if you find a lost American Mastiff

If you find a American Mastiff Dog or any other pet and it does not have an identification tag with a phone number, you can:

1. Report the found pet details at Pet Reunite website here.

2. Register the missing pet on the Local Facebook Lost Pets Groups.

3. Contact the Local Authority to collect the lost animal.

4. Take the animal to the local Animal Shelter near to your area.

5. Take the pet to the local Vet Clinic who normally scan the animal’s microchip and call the registered owner of the pet.

Laws Regarding Missing Pets

1. It is against the law to keep any animal that you find.

2. Pets are generally considered property and it is illegal to take and keep someone else’s property.

3. You must call your local animal control unit and file a FOUND AN ANIMAL report for any dog or cat you find.

4. To reclaim your lost dog, cat or other pet from the animal shelter you must pay a release fee.

5. If your dog or cat is unregistered, you will have to register your pet before you can take it home.