Mastiff

Updated January 7, 2025

Updated January 7, 2025

Mastiffs are gentle giants with a calm demeanor and moderate exercise needs. These steadfast companions they make loyal family pets for those with lots of time for training—and who aren't afraid of a little (ok, a lot) of drool.

Temperament

Unruffled, Dignified, Protective

Weight

Male: 160-230 pounds

Female: 120-170 pounds

Height

Male: 30 inches and up

Female: 27.5 inches and up

Life Expectancy

6 to 10 years

Coat Color

Fawn, Apricot, Brindle

This gentle giant lumbers along instead of trotting and leaves behind a wake of smeary drool. But if you’re a quick draw with a roll of paper towels and awed by the majesty that a Mastiff brings to the table, you may want to check out this special canine. Not for the faint of heart (or anyone with tiny biceps), a Mastiff puppy requires an all-in training approach—but in return, they’ll match your efforts with steadfast loyalty and love.

Mastiff Characteristics

Remember: Dogs are individuals and not all dogs, even those of the same breed, will exhibit all the same qualities.

    Mastiff Appearance

    The Mastiff dog breed’s heavy-boned frame contains a gentle heart. With a huge head, framed by long, soft ears, and oh-so-many expressive wrinkles, this very large pup moves slowly but with great purpose. Expect oodles of drool from their large droopy jowls but at least their short coat, which comes in fawn, apricot or brindle (subtle tiger stripes), is easy to care for.

    Photo of a Mastiff
    1. Ears

      Mastiff ears are small compared with their very large head and are V-shaped with rounded tips.

    2. Eyes

      Mastiff eyes are wide-set, medium in size and brown (the darker the better).

    3. Nose

      A Mastiff's muzzle is half the length of their head, and their nose is broad and dark in color (black is preferred).

    4. Coat Length

      Mastiffs are short-coated pups with a dense outer coat and a short, close-lying undercoat.

    5. Coat Color

      Their coat colors consist of fawn, apricot or brindle (subtle tiger stripes).

    6. Tail

      A Mastiff tail is wide at the base and tapers toward the end, and it may hang straight or curve slightly upward.

    Mastiff Temperament

    Extreme loyalty and a courageous nature are the defining characteristics of a Mastiff’s temperament. While a Mastiff’s massive weight and height may put off some potential pet parents, this breed is quite friendly and makes an excellent family pet. If little ones are in your mix, know that with early and consistent training, having a Mastiff with kids is very doable since barking and biting aren’t common to this breed. Their kindly personality extends to four-legged pals as well, which means you can often add this colossal canine to homes with cats and other dogs.

    A Mastiff has competency in spades, thanks to their innate intelligence and eagerness to please. As a quick learner, the Mastiff thrives on service, perhaps because this working breed has a long history of guarding and fighting alongside soldiers in battle.

    It may seem counterintuitive that such a large animal might not have deep energy reserves, but this is actually the case with the Mastiff dog breed. Slow and steady wins the race here, so low-key pup parents are often the best pairing for this majestic creature.

    How to Care for a Mastiff

    Mastiff exercise needs are moderate and their coats are rather easy to brush—two reasons this most excellent dog breed may be the one for you. But keep in mind that this pup drools—a lot! So, you’ll always need at least one towel on hand for keeping their face (and your furniture) drool-free.

    Grooming

    Training

    Diet

    Exercise

    Environment

    Mastiff Health

    Mastiffs have a lifespan of 6 to 10 years. As with any dog breed, certain conditions are endemic. Potential pet parents should be aware of these health issues, so they can help their pup live the healthiest life possible.

    • Hip and Elbow Dysplasia: These conditions, which may be genetic and occur when the joints form abnormally, can cause pain and lameness in a Mastiff. Weight management and medication may be recommended, as well as surgery in more severe cases.
    • Progressive Retinal Atrophy (PRA): Multiple dog breeds may be affected by a family of inherited progressive degenerative eye diseases. One in this category is progressive retinal atrophy or PRA, and it strikes the retina, ultimately causing blindness. While there’s no cure for PRA, Mastiffs typically get used to the vision loss and have good quality of life.
    • Heart Disease: There are several possible conditions that can affect a Mastiff’s heart including issues with the heart valves and dilated cardiomyopathy (DCM). Often one of the first signs will be a heart murmur. If your vet detects a heart murmur, they will likely refer you to a veterinary cardiologist for an echocardiogram (ultrasound of the heart) to determine the exact cause.
    • Degenerative myelopathy (DM): This inherited neurologic condition is characterized by a progressive weakness of the rear limbs and ultimately may result in the dog being unable to stand or walk. There is no cure for DM but genetic screening testing is available so be sure to ask your breeder.
    • Bloat or Gastric Dilatation-Volvulus (GDV): Large breeds with deep chests may be affected by this condition, which is suspected of having a genetic link as well as environmental causes such as eating too fast and having only one large meal a day. Bloat can be life-threatening as the stomach fills with air then twists. This is an emergency and you should take your pup to the vet immediately if they show any of the signs which include abdominal distension, retching/dry heaving, and restlessness. To help reduce the chances of getting bloat, feed your pup with a slow feeder bowl and feed them smaller meals throughout the day.
    • Epilepsy: Mastiffs are prone to this potentially inherited seizure disorder which typically begins around 6 months to 5 years of age. Treatment is most often daily oral medication.

    Mastiff History

    The Mastiff enjoys a proud ancient lineage, though some confusion may erupt over mastiffs generally (as a type of dog) and Britain’s Old English Mastiff, which the American Kennel Club has simply named “Mastiff.” Dogs known as mastiffs have thrived for millennia in Greece, Rome, China and Egypt, with hieroglyphics of Mastiff likenesses showing up on monuments in the Nile region as early as 3000 BC. In fact, today’s Tibetan Mastiff and Neapolitan Mastiff breeds share a gene pool with mastiffs of yore.

    Mastiff history is steeped in service as war dogs who fought invaders on many fronts. Caesar himself was apparently in awe of the breed when he ventured onto Britain’s shores in 55 BC. He brought Mastiffs home to Rome to be matched against gladiators and wild animals such as bears, bulls, lions and tigers. Mastiffs also worked as big game hunters, guard dogs and on the battlefield in an important campaign against the French in 1415.

    Mastiffs came to the US in the late 1800s and were used to guard plantations. The pup joined the ranks of the American Kennel Club in 1885, making them one of the first recognized breeds in the AKC.

    After World War II, the Mastiff nearly died out, with just 14 remaining in England. Fortunately for this noble animal, the Mastiff was brought back from the brink by dedicated breeders. Today, this canine’s combat boots have been hung up in favor of a cushier life in homes as a loyal companion.

    Are you thinking about a Mastiff as a pet? Mastiff prices are about $2,500 to $3,500, depending on where you live. But for that price, you’ll likely get a pup who’s been screened for health issues and may come with pedigree papers. The AKC Marketplace is a good place to find reputable breeders for your Mastiff puppy. You can also check with Mastiff rescues, keep an eye out at local animal shelters, or search Chewy’s database of adoptable dogs in your area if you want to adopt a pup.

    FAQs

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    Expert input provided by Dr. Jerry Klein, DVM, American Kennel Club’s Chief Veterinary Officer and Mary R. Burch, PhD, Certified Applied Animal Behaviorist and AKC Family Dog Director

    Breed characteristic ratings provided by veterinarian Dr. Sarah J. Wooten, DVM, CVJ, a veterinarian at Sheep Draw Veterinary Hospital in Greeley, Colorado; dog trainer and behavior consultant Irith Bloom, CPDT-KSA, CBCC-KA, CDBC, owner of The Sophisticated Dog, LLC, in Los Angeles; and certified animal behavior consultant Amy Shojai, CABC, in Sherman, Texas.

    The health content was medically reviewed by Chewy vets.