The words Dog Breed Info with the letter D inside of a black paw print

American Mastiff Pictures

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Front view of a wide-chested, large headed, black brindle extra large dog with a big mouth, a long big tongue and ears that hang down to the sides of his head sitting in grass with his mouth open and pink tongue hanging out.

Maverick the American Mastiff at 4 years old—"Maverick is a gentle giant weighing in at a lean 190 pounds and fits his breeds temperament exactly! He listens well and protects his land and can basically be mauled by kids without a worry. One of the best breeds I have brought into our family. I was skeptical about doubling the size of our previous member but this loving teddy bear filled the void and then some! He is a farm dog that knows his acreage and will never leave unless accompanied by family!"

Other Names

AM Mastiff

North American Mastiff

Close up - The right side of a brindle American Mastiff that is sitting in a yard and it is looking to the right.

Max, a three-year-old American Mastiff, male, brindle coat

The back left side of a tan American Mastiff that is sitting and being fed by a person standing in front of it. They are in front of a bed of flowers and the words 'Good Manners' are overlayed over the image.

Gideon, a three-year-old American Mastiff, male, fawn coat

The right side of a tan American Mastiff is sitting and it is waiting to be fed by a person in front of it and there is a bed of flowers behind them.

Gideon, a three-year-old American Mastiff, male, fawn coat

The left side of a tan American Mastiff that is laying outside in a lawn, under the shade of a tree.

Bart at 11 months, owners: The Robinette Family—"This is Bart, an eleven-month-old American Mastiff, apricot color. Bart has the typical short, smooth American Mastiff coat."Photo courtesy of American Mastiff (Flying W)

Jake Jr. the American Mastiff puppy laying in a field

"Jake Jr. is only three months old and is very, very light fawn with very exceptional mask. Jake has the very short, smooth American Mastiff coat." Photo courtesy of American Mastiff (Flying W)

A tan American Mastiff puppy is sitting in the lap of a person in a recliner and the person is petting it.

"Grande is an 8-week-old puppy in this photo and is a very, very rare "fluffy" (longer coat). Fluffies are seldom seen in the American Mastiff but they do exist. Grande is a lovely fawn/apricot." Photo Courtesy of American Mastiff (Flying W)