Mastiff Breed Information

“The Mastiff is a gentle, loyal, and protective breed, known for its massive size, calm demeanor, and prowess as a guardian of home and family.”


About the Mastiff

Group: Working

Known as gentle giants, Mastiffs combine power, dignity, and gentleness. They’re enormous dogs – reaching up to 200 pounds – but their generous size is matched by an equally generous nature. Loyalty runs deep in Mastiffs, who will defend their home and family with surprising speed and agility. They’re calm amidst chaos and have a quiet nature, preferring to use their imposing stature to ward off intruders rather than entering into battle. Recognized for their patience, they’re suitable for families with children and get along well with other pets. Exercising your Mastiff isn’t a marathon; a couple of short walks and some playtime will satisfy them. Training can challenge your persistence due to their stubbornness, so remember to stay patient and consistent. Keep a close eye on their diet as they’re prone to obesity, and ensure regular visits to the vet due to their susceptibility to certain health issues. If you’re looking for a low-key, devoted companion who excels in the role of a peaceful giant, the Mastiff could just be the breed for you!

Physical information

Male Female
Average Height 30 inches 27.5 inches
Average Weight 160 lbs. 150 lbs.
Life Expectancy 10 years 11 years

Mastiff Breed Standard

The breed standard for the Mastiff, as outlined by the American Kennel Club (AKC), provides specific guidelines regarding the breed’s physical appearance and temperament.

  • Acceptable Colors: According to the AKC breed standard, these dogs can be varying shades of fawn, apricot, or brindle, always with a black mask on the muzzle, ears, and eyes.
  • Acceptable Markings: As per the standard, Mastiffs should have a black mask that includes the ears, eyes, and muzzle, in addition to small patches of white on the chest or toes.

Personality and Ownership Rankings

Friendliness 5 stars
Good with kids 4 stars
Shedding Level 3 stars
Grooming Needs 2 stars
Drool Level 5 stars
Trainability 3 stars
Energy Level 2 stars

Breed Highlights

  • Loyal: Mastiffs form deep attachments to their families and are tremendously loyal.
  • Gentle: Despite their size, Mastiffs are known for their gentle and calm demeanor.
  • Protective: Mastiffs are natural guardians of their home and family, always alert and watchful.
  • Even-tempered: Mastiffs are easygoing and not prone to unexpected bursts of energy making them great household pets.
  • Intelligent: Mastiffs are smart dogs with a good capacity for learning and understanding commands.

National Breed Clubs and Rescues

Clubs and Organizations

Rescue Organizations

Care Needs

Mastiffs are relatively healthy dogs, but as with any large breed, they come with their share of health concerns. Common issues include hip and elbow dysplasia, heart disorders, and certain types of cancer. Hence, regular health check-ups with the vet along with a healthy diet and exercise regimen can help ensure a Mastiff’s long-term health. For a comprehensive overview of Mastiff health care, check out this helpful guide.

Recommended Health Tests

  • Hip Evaluation
  • Elbow Evaluation
  • Cardiac Exam
  • Ophthalmologist Evaluation
  • Thyroid Evaluation

Exercise Needs

Despite their imposing size, Mastiffs have moderate exercise needs. Daily walks and some playtime in the backyard are typically sufficient to keep this breed mentally stimulated and physically fit. However, due to their size, it’s important to be careful not to over-exert your Mastiff, particularly in hot weather. For more great suggestions of exercise ideas for a Mastiff, check out this article from Wag Walking.

Actionable Exercise Advice

  • Provide daily walks and play sessions.
  • Try to avoid overheating by exercising in cooler parts of the day.
  • Provide toys for mental stimulation and play.

Training Needs

Training a Mastiff requires patience and consistency as they can be a bit stubborn at times. Using positive reinforcement techniques typically yields the best results. Early socialization and obedience training are also important to ensure a well-behaved, balanced dog. Mastiffs are intelligent and eager to please, making them generally responsive to training despite their independent streak. For some tips on training your Mastiff to avoid unwanted behaviors like biting, jumping, and chewing, refer to this article from Mastiff Guide.

Actionable Training Advice

  • Start training early, while your Mastiff is still a puppy.
  • Use positive reinforcement techniques for best results.
  • Keep training sessions short and fun to hold your Mastiff’s attention.

Nutrition Needs

When it comes to their diet, Mastiffs require balanced nutrition with a high concentration of quality protein to support their lean muscle mass. Fats, especially Omega-3 and Omega-6 fatty acids, are essential for skin and coat health, while a low carbohydrate diet helps prevent obesity. Portion control is crucial since this breed is prone to overeating and weight gain. For more in-depth knowledge on feeding your Mastiff puppy, consider this old (but still accurate) guide from Gryphon Mastiffs.

Actionable Nutrition Advice

  • Opt for high-quality dog food made with natural ingredients.
  • Divide your Mastiff’s daily food intake into two meals to prevent bloating.
  • Monitor your Mastiff’s weight and adjust food portions as needed.
  • Ensure your Mastiff always has access to fresh water.

Mastiff Breed History

The Mastiff, one of the oldest and most distinguished dog breeds, has a recorded history that stretches back to antiquity. Originating from Asia, Mastiffs, or Molosser types, were used by ancient civilizations as war dogs, guardians, and for bear- and bull-baiting due to their size and strength.

In their early development, Mastiffs were considered prized possessions and were often gifted by nobility. When the Romans invaded Britain, they were impressed by the power and courage of the breed and brought many back to Rome, using them in the Coliseum for sport and to guard and patrol estates.

The breed’s standardization started gaining attention in England during the 1700s and 1800s. In literature and artwork from these centuries, Mastiffs are often depicted as stalwart protectors, demonstrating their value in society. The breed was recognized by the United Kingdom Kennel Club in 1873 with the formation of the Mastiff Club.

Popularity of the breed fluctuated throughout history due to various societal factors. International recognition of the breed came quite late, with the American Kennel Club recognizing them in the 19th century.

Challenges in preserving the breed were prevalent, particularly during World War II, due to food shortages and general chaos. The breed nearly went extinct in Britain, but thanks to the dedication of enthusiasts who imported Mastiffs from the United States, which had a healthier population, the breed was revived in its native homeland.

In the modern era, Mastiffs are cherished for their gentle temperament contrary to their imposing size. They are loyal, affectionate, and protective, making them suitable as both family pets and watchdogs. They require consistent training and socialization due to their size and strength. They are slow to mature and retain their playful, ‘puppy-like’ nature for years. Today, ornamental breeders aim to preserve and enhance these positive characteristics, ensuring the Mastiff’s ongoing popularity.

Mastiff Fun Facts

  • Largest Recorded Litter: A Mastiff holds the world record for the largest litter ever, with 24 puppies born in 2004.
  • Oldest Breed: The Mastiff is one of the oldest breeds with a history that dates back to antiquity in Asia and the Roman Empire.
  • Ancient War Dogs: Mastiffs were used in the ancient world for war, guarding, and as entertainment in the brutal world of gladiatorial combat.
  • 16th Century Star: A Mastiff named Lukey became famous in the 16th century for her size, strength, and for being portrayed by artists like Rubens and Van Dyck.
  • World’s Largest Dog: Mastiff named Zorba held the Guinness World Record for the World’s Largest Dog in the 1980s, weighing in at a massive 343 pounds.
  • Biggest Heart: Mastiffs are known to be “gentle giants” because despite their size, they are famously good-natured and gentle dogs.

Frequently Asked Questions

1. Are Mastiffs good with children?

Yes, Mastiffs are known for their gentle, patient nature which makes them generally good with children. However, supervision is needed due to their sheer size.

2. How much exercise does a Mastiff need?

Mastiffs require moderate exercise such as daily walks and playtime in the backyard to keep them healthy and avoid obesity.

3. Are Mastiffs easy to train?

While Mastiffs are intelligent and can learn quickly, they can also be quite independent and may require patience and consistency during training.

4. What is the typical lifespan of a Mastiff?

Mastiffs typically live to be around 6 to 10 years old, although some can live a few years longer with good care and nutrition.

5. Do Mastiffs drool a lot?

Yes, drooling is a common characteristic of the breed, especially after eating or drinking, and during exercise or excitement.

Breeds Similar to the Mastiff

  • Bullmastiff: The Bullmastiff, a breed developed by crossing the English Mastiff with the Bulldog, shares many traits with the Mastiff. They are courageous and highly protective of their families, making them excellent guard dogs, yet they are also gentle and affectionate with a steady temperament.
  • Great Dane: Great Danes, like Mastiffs, are known as gentle giants. They are friendly, patient, and usually get along well with children and other animals. They require moderate exercise and are generally easy to train, which makes them a good option for those considering a Mastiff.
  • Neapolitan Mastiff: Originally bred in southern Italy, the Neapolitan Mastiff has a similar temperament to the Mastiff. They are known to be protective, but are also peaceful and balanced. Despite their imposing size, they are gentle, loving, and form strong bonds with their families.
  • Newfoundland: Despite not being a mastiff breed, the Newfoundland shares several characteristics with them. They are large, strong dogs known for their sweet-natured and gentle temperament. They are great family dogs and are particularly good with children.