American Mastiff

USD 1000-1500 Price Avg.

Working Dogs



Breed Type



10-12 years


Breed Information

Group Working Dogs
Popularity/Rank 447
Origin United States
Other Names AM Mastiff
Breed Type Purebred
Price (Avg.) USD 1000-1500
Size Giant
Weight Male: 160-200 pounds (72-90 kg),
Female: 140-180 pounds (63-81 kg)
Height 28-36 inches (65-91 cm)
Lifespan 10-12 years
Recognized by
Not recognized by the American Kennel Club. And Not recognized by FCI.
Purpose Working, Companion
Date of Origin 1990s
Ancestry Anatolian Mastiff, English Mastiff

Appearance & Maintenance

Coat Straight
Coat Colors Apricot, Brindle, Fawn, White
Grooming Level
Shedding Level
Eye Color Possibilities Amber, Brown
Nose Color Possibilities Black
Coat Color Possibilities Brindle, Brown, Fawn
Coat Length Medium
Coat Density Normal
Coat Texture Straight
Recommended Brushes Deshedder, Nail Clipper, Pin Brush, Slicker Brush
Brushing Frequency Weekly

Breed Characteristics

Temperament Affectionate, Brave, Calm, Caring, Courageous, Daring, Defensive, Dignified, Good-natured, Protective
Sensitivity Level
Affection Level
Social Interaction Required
Watchdog Ability
Biting Force Moderate
Impulse to Wander or Roam
Prey Drive
Tolerates Being Left Alone
Fighting Dog Not really

Good & Friendly with

Apartment Life Friendly
Stranger Friendly
Cat Friendly
Dog Friendly
Office Friendly No
Senior Citizens Friendly
Pet Friendly
Friendly with First Time Owners Yes
Service Dog Not really
Therapy Dog Not really
Detection, Sniffer or Security Dog Not really
Search and Rescue Dog (SAR) Not really
Boat Dog Not really
Cart Pulling or Drafting Dog Yes

Health Elements

Health Issues
Health Problems Arthritis, Bloat, Cancer, Cataracts, Cystine Urolithiasis, Drooling, Ectropion, Elbow Dysplasia, Entropion, Exposure Keratopathy Syndrome, Heart Disease, Hip Dysplasia, Hypothyroidism, Osteoa
Hypoallergenic No
Energy Level
Exercise Required
Sleeping Required
Weight Gain Potential
Weather & Climate Prefers average to warm weather conditions
Stinkiness High
Drooling tendency
Activity Level Moderate
Rec. Walk Mileage Per Week 10 miles
Minutes of Activity Per Day 60 minutes

Food & Costing

Avg. Daily Food 6 to 8 cups of high-quality dry food a day, divided into two meals.
Cups Per Day 4 cups
Daily Cost $2.75 - $3.00
Monthly Cost $80.00 - $90.00


Gestation Duration 60-64 days
How often can the American Mastiff have a litter? Once a year.
Litter Size 2-5 puppies (Once a year.)


The American Mastiff is a large breed of dog that has been around for centuries. It is a cross between the English Mastiff and the Anatolian Shepherd, and it has become increasingly popular in recent years. The American Mastiff is an impressive looking dog with a strong, muscular body and a noble bearing. They are loyal, protective, and devoted to their families.

Appearance: The American Mastiff has a large head with broad muzzle and dark eyes that are set wide apart. Its ears are medium-sized and hang down close to its cheeks. Its coat is short, dense, and smooth with colors ranging from fawn to brindle or black masking on the face.

Lifespan: The average lifespan of an American Mastiff is 10-12 years when properly cared for.
Size: An adult male can reach up to 30 inches tall at the shoulder while females can reach up to 28 inches tall at the shoulder.
Weight: Males typically weigh between 130-170 pounds while females typically weigh between 110-150 pounds.
Colors: Colors range from fawn to brindle or black masking on the face.
Personality: The American Mastiff is known for its loyalty, protectiveness, intelligence, courage, patience, and devotion to its family members. They are gentle giants who love spending time with their people but can be aloof around strangers until they get used to them over time. They make excellent guard dogs as they will bark if someone approaches their home or family members but they will not attack unless provoked or threatened in some way first.

Friendliness: The American Mastiff is generally friendly towards other dogs as well as children when properly socialized from an early age but may be wary of strangers until they get used to them over time due to their protective nature towards their family members . They also tend to get along well with other animals such as cats if raised together from puppyhood but may still need supervision when interacting with smaller animals due to their size and strength .

Temperament : The temperament of an American Mastiff can vary depending on how it was raised but generally speaking they are calm yet alert dogs who enjoy spending time outdoors playing fetch or going for walks . They do not require excessive amounts of exercise but should still have regular physical activity in order for them stay healthy both mentally and physically .

Health : Generally speaking , the health of an American Mastiff tends be good overall however there are certain health issues that this breed may be prone too such as hip dysplasia , elbow dysplasia , bloat , heart disease , eye problems , skin allergies , ear infections etc . It’s important that you take your pet for regular checkups at your local vet so any potential health issues can be caught early on before they become more serious .

Adaptability : This breed does best in homes where there’s plenty of space both indoors and outdoors so it can move around freely without feeling cramped or restricted . As long as it gets enough exercise each day then this breed should do well living in apartments provided it gets enough mental stimulation through activities like obedience training or playing interactive games like hide & seek etc .

Benefits : There are many benefits associated with owning an American Mastiff such as being loyal companions who will always look out for you no matter what situation arises ; being great guard dogs who will alert you if someone approaches your home ; being intelligent enough that you can train them easily ; being patient & gentle which makes them great family pets ; having low grooming needs which makes them easy maintain; having low shedding coats which means less mess around your house; being relatively healthy compared other breeds etc ..


The American Mastiff is a large, powerful dog breed with a long history. The breed is believed to have originated in the United States, and was once very popular. However, the American Mastiff breed almost became extinct due to a lack of interest from breeders. In recent years, the American Mastiff breed has become popular again, thanks to the efforts of dedicated breeders.

The American Mastiff is a descendant of the English Mastiff, which was brought to the United States by early settlers. The English Mastiff is a large, powerful dog breed that has been used for centuries as a working dog. The English Mastiff was used for hunting and guarding, and was also popular as a guard dog for homes and businesses.

The American Mastiff is recognized as a separate breed from the English Mastiff by the American Kennel Club (AKC). The AKC first recognized the American Mastiff in 2006. The American Mastiff is also recognized by the United Kennel Club (UKC) and the Canadian Kennel Club (CKC).

The American Mastiff is a large, muscular dog with a short coat. The coat can be any color, but is most commonly black or brindle. The average height of an adult American Mastiff is 27 inches (69 cm), and they can weigh up to 200 pounds (91 kg).

American Mastiffs are loyal, protective dogs that make great family pets. They are gentle giants that are good with children and other animals. However, because of their size and strength, they need to be properly trained and socialized from an early age. If you are considering adding an American Mastiff to your family, be sure to do your research and find a reputable breeder.