Neapolitan Mastiff

Updated October 14, 2024

Updated October 14, 2024

With their giant size, it's no surprise that Neapolitan Mastiffs were originally trained as guard dogs. Today, these pups have a chill, homebody vibe—as long as there's enough space for them at home. Give them regular exercise and early socialization and you'll have a loyal pal for life.

Temperament

Loving, Chill, Gentle

Weight

Male: 150 pounds

Female: 110 pounds

Height

Male: 26-31 inches

Female: 24-29 inches

Life Expectancy

7 to 9 years

Coat Color

Blue, Black, Mahogany, Tawny

When you first look at a Neapolitan Mastiff, you might think, “How wrinkly! How… HUGE!” And you’re not wrong. Neos (as they’re affectionately called) were originally bred to guard their homes—something they’re capable of doing with a look and a (deep) bark. But these extra-large pups are more than their massive build—they love their families unconditionally. They often show that love with drooly kisses… and they may try to crawl into your lap.

Neapolitan Mastiff Characteristics

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

    Neapolitan Mastiff Appearance

    The Neapolitan Mastiff is known for their giant size and their giant wrinkles. When you pair their color palette of black, blue, mahogany or tawny (with the occasional bridle tiger stripes) with their droopy ears, eyes and jowls, these pups look sorrowful. But their “Eeyore” appearance belies a secret Neo lovers know best: These sad-looking pups are happiest hanging with their families.

    Photo of a Neapolitan Mastiff
    1. Ears

      The AKC breed standard allows for the ears to be cropped or natural. Cropping involves surgically cutting away part of a dog’s ears. Veterinary groups along with many U.S. states and countries have banned this procedure due to medical and behavioral reasons. If you are interested in this procedure, schedule a consultation with your veterinarian. If left natural, the ears are medium-sized, triangular and droopy.

    2. Eyes

      Their eyes are deeply set with drooping upper and lower eyelids and are amber or brown depending on their coat color.

    3. Nose

      Neo's noses are large with wide nostrils. The color matches the dog's coat.

    4. Coat Length

      Neapolitan Mastiffs are short-coated dogs with loose skin and dense hair.

    5. Coat Color

      Their coats are blue, black, tawny or mahogany, and some are brindled.

    6. Tail

      Their tail is wide, thick and tapered toward the end. The AKC breed standard calls for the tail to be docked. Docking involves cutting a portion of the dog’s tail off when they are puppies. Veterinary groups along with many U.S. states and countries have banned this procedure due to medical and behavioral reasons. If you are interested in this procedure, schedule a consultation with your veterinarian.

    Neapolitan Mastiff Temperament

    Neapolitan Mastiff dogs (aka Mastinos or Neos) love their families. Despite their extra-large size, you may find your gentle giant trying to snuggle up on your lap! And these lumbering pups do well as playmates with children. Just keep an eye on extra-small kids; even though Neos aren’t as active as Border Collies, they may knock over a toddler accidentally due to their sheer size.

    Neos are wary of newcomers, but they are rarely reactive. Still, their massive size and deep, throaty bark are usually enough to keep unwanted visitors at bay. Early socialization is important to help teach them the difference between friends and foes.

    Neos may not naturally get along with other dogs, so proper introductions and lots of socialization are key if you’re adding them to an existing pack. They may do OK with a family cat if raised with them through puppyhood, but some Neos will chase cats.

    Mastino puppies are energetic and playful. As adults, they’re the ultimate couch potatoes and live to lounge near their people.

    Similar in size and pet care needs as the Neapolitan Mastiff

    How to Care for a Neapolitan Mastiff

    Caring for a Neapolitan Mastiff isn’t as time-consuming as they may appear. This chill dog doesn’t need a lot of exercise or grooming—but pay attention their skin folds to prevent infection and keep a towel to clean up their drooling. The bulk of your time will be spent in training this powerful, large-breed pooch.

    Grooming

    Training

    Diet

    Exercise

    Environment

    Neapolitan Mastiff Health

    The Neapolitan Mastiff has a life expectancy of 7 to 9 years, and the breed is prone to a lot of health issues. But this shouldn’t stop you from considering this wonderful pup. By knowing what these health issues are, you can help your dog live the longest life possible.

    • Cherry Eye: Dogs have three eyelids. The third eyelid has a gland that contributes to tear production called the nictitans gland. This gland can prolapse, appearing as a pink fleshy tissue at the corner of the eye commonly called “cherry eye”. Typically, surgery is needed to return the gland to its proper place.
    • Hip and Elbow Dysplasia: Dysplasia is a hereditary condition in which the joint is malformed and rubs, causing your dog pain, lameness and, eventually, arthritis. Treatments range from weight and exercise management to physical therapy to surgery.
    • Facial Fold Infections: The nooks and crannies of your Neo’s folds are a breeding ground for bacteria, which can develop into yeast infections. Keep an eye on folds particularly around the mouth and underbelly while bathing and grooming and contact your vet if irritation develops.
    • Gastric Dilatation Volvulus (GDV): GDV (otherwise known as bloat) is a life-threatening, emergency condition in which the stomach fills with gas and twists on itself. To help protect your pup from GDV, feed them smaller meals throughout the day with a  slow feeding bowl  and wait an hour before and after mealtimes before exercising.
    • Dilated Cardiomyopathy (DCM): This inherited heart condition causes the heart to become enlarged resulting in thin and weakened heart muscle. This can lead to heart failure. Daily medication is the likely course of treatment.

    Neapolitan Mastiff History

    The Neapolitan Mastiff’s history dates back to Ancient Rome (and maybe as far as 700 B.C.), where their ancestors’ strength and girth made them ideal war dogs, gladiators and guards of hearth and home. These original pups (the Molossus) were later bred to be more family-friendly, and the Neapolitan Mastiff came to be. (They are named for Naples, where they originated.)

    By the 1940s, Neapolitan Mastiffs were nearly extinct, but thanks to a concerted effort by Italian breeders, the Neapolitan Mastiff Renaissance was born. Also known as Neos or Mastinos, Neapolitan Mastiffs were recognized by the American Kennel Club in 2004, and included in the Working group, aka the group of dogs bred for a specific job, like guarding or search and rescue.

    Are you looking to add a Mastino to your family? You can find reputable breeders on the AKC website. Neapolitan Mastiff puppies cost about $1,500 to $2,500 but can exceed $5,000, depending on the lineage. But for that price, you’re likely getting a pup who’s been screened for health and temperament issues and may come with pedigree papers. If you’d like to adopt a pup, connect with a Neapolitan Rescue organization or look out for the breed at your local shelter. Search Chewy’s database of adoptable dogs in your area.

    FAQs

    What is the difference between a Neapolitan and an English Mastiff?

    Do Neapolitan Mastiffs shed?

    How big do Neapolitan Mastiffs get?

    Are Neapolitan Mastiffs good guard dogs?

    What are the most common Neapolitan Mastiff mixes?


    Expert input provided by veterinarian Dr. Christina Haney, DVM, founder of Alicia Pacific Vet Center in Laguna Niguel, Calif., and certified dog trainer Ali Smith, owner of www.rebarkable.com.

    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.

    Photo credit for “How do I look?” AKC.org


    Similar in size and pet care needs as the Neapolitan Mastiff