Portrait of a Neapolitan Mastiff, a giant working dog breed prone to hip and elbow dysplasia and skin allergies

Neapolitan Mastiff

  • Giant
  • Working Group
  • Popularity rank 119

The Neapolitan Mastiff is a giant Italian guardian, all hanging wrinkles and a massive, noble head. Behind the fearsome look is a loyal, dignified homebody who would rather nap on the couch than chase anything.

Height
24 to 31
inches at the shoulder
Weight
110 to 150
pounds, adult
Life expectancy
7 to 9
years, median 8
Senior from
6
years, about

Senior starts in the last quarter of a breed's expected lifespan, following the 2019 AAHA canine life stage guidelines. Individual dogs vary.

About the breed

Temperament
Dignified, loyal, watchful
Coat
Smooth, short
Origin
Italy
Recognized
2004
Popularity, 2015 to 2025 Rank 119 in the latest ranking

2015: rank 106, 2016: rank 99, 2017: rank 107, 2018: rank 102, 2019: rank 102, 2020: rank 100, 2021: rank 106, 2022: rank 119, 2023: rank 118, 2024: rank 128, 2025: rank 119

2015 Lower is more popular 2025

The Neapolitan Mastiff, or Mastino, is a giant, strongly built guardian of startling appearance. Profuse hanging wrinkles and folds, plus pendulous lips and a massive head, give the breed its unmistakable look. Beneath all that is an inner dignity and nobility that owners come to call beautiful.

These are huge dogs, weighing 110 to 150 pounds and standing 24 to 31 inches tall. The wrinkled, droopy look was bred on purpose to deter intruders, which is fitting for a member of the Working Group from Italy, recognized in 2004.

The breed has a long history as a protector: first as a dog of war in the ancient Roman army, then as an estate guard dog in Italy, and today as a watchful guardian of the household. The Mastino's fame even reached the screen, where one played Hagrid's dog, Fang, in the Harry Potter films.

Do not let the size fool you. This is a gentle giant, dignified and loyal, and good with families and children. It can be wary of strangers and may not always get along with other pets, but at home it is an equally lazy and devoted companion.

Temperament and needs

Scored 1 to 5 for the breed overall. Individual dogs vary.

  • Affectionate with family3 out of 5
  • Good with young children3 out of 5
  • Good with other dogs3 out of 5
  • Openness to strangers3 out of 5
  • Playfulness2 out of 5
  • Watchdog and protective nature5 out of 5
  • Adaptability3 out of 5
  • Trainability3 out of 5
  • Energy level2 out of 5
  • Mental stimulation needs3 out of 5
  • Barking level1 out of 5
  • Shedding3 out of 5
  • Grooming frequency2 out of 5
  • Drooling5 out of 5

Care

The routines that matter most for this breed. Open one at a time.

Nutrition

The Neapolitan Mastiff does well on a high-quality dog food, whether commercially manufactured or home-prepared under your veterinarian's supervision and approval. Match the diet to your dog's life stage: puppy, adult, or senior. A formula made for large-breed dogs suits the breed, since it supports slow, steady growth.

Experienced breeders suggest food slightly higher in fat and lower in protein, especially while the dog is young and growing fast. Do not supplement with calcium. Keep clean, fresh water available at all times.

Feeding amounts depend on your dog's health, weight, activity level, and size, so use the portion instructions on the food bag as a starting point and consult your veterinarian if you are unsure. A few feeding habits matter for this breed:

  • Feed adults two meals a day, and feed puppies three or four meals a day on a regular schedule.
  • Do not free-feed. A bowl left out all day can lead to overeating and obesity.
  • Feed from a bowl on the floor, not an elevated one, because the breed can develop bloat.
  • If your dog eats too fast, slow it down with a slow-feeding bowl.

Measure portions and count treats toward daily calories. Treats should make up no more than 10% of your dog's calories. A Neapolitan Mastiff on a balanced diet should not need supplements, though omega-3 supplements such as fish oil may help keep the loose skin healthy and a joint supplement may support the joints. Check with your vet about weight, diet, or any supplements.

Grooming

The Neapolitan Mastiff has a short, smooth coat, so a bath now and again handles most of the work. The breed has sensitive, oily skin and needs a bath once or twice a month, and more often if your dog has skin allergies. Get your puppy used to frequent baths early, and keep tools such as lick mats, dog shampoos, and coat conditioners on hand.

Despite the short coat, brush gently a few times a week, since brushing too harshly can damage the sensitive skin. Like many dogs, the breed sheds more in spring and fall and needs more frequent brushing in those seasons. Keep the nails short with regular trims.

Check and gently clean the eyes and ears whenever needed. Inspect the ears for cuts, dirt, and excess wax, clean them with a dog-specific ear cleaner, and talk to your veterinarian if you notice any changes. Because the breed is prone to cherry eye, watch the eyes and consult your veterinarian about any changes.

This breed drools, so be prepared. Keep a towel handy to dry the face and lips, especially after your dog eats or drinks.

Exercise

The Neapolitan Mastiff's exercise needs are low. A short walk of 15 to 30 minutes a day is usually enough, with leisurely hikes or brief games of catch or chase added in. These dogs are almost cat-like and will happily spend the day lying around and napping in the sun.

Every dog should get to run and romp, but do not emphasize running and quick turns, since the joints damage easily. This is a big, heavily built breed that overheats fast, so take care in warm weather. A puppy may want to play past its limit, so it is up to you to stop before it gets too tired.

Be careful on stairs, since many an exuberant puppy's knee has been hurt by a leap off a porch or a jump down the last few steps. Skip heavy tug-of-war and rough wrestling, because a growing Mastino quickly learns it is stronger than its smaller human.

Even lazy as they are, these dogs need room to move and mental engagement. In an apartment, plan to walk your dog several times a day and set aside space just for it, including a large orthopedic bed to cushion its joints. They enjoy the outdoors but will not want to be out all day, so a backyard is helpful but not essential.

Training

Most adult Neapolitan Mastiffs are calm animals that sleep a lot, but puppies are active, curious, and cuddly, and the adolescent Neo is energetic and strong when awake. Start training while it is young, so the right structure is in place before the strong, stubborn teenage stage. By age 3 or 4, most settle into a laidback adult temperament.

This breed does not respond well to harsh training. It needs an encouraging, rewarding atmosphere, so be patient and consistent. Stubborn as they are, they thrive on praise and positive reinforcement, and healthy treats such as chopped carrots and apple slices help avoid weight gain. Bred to work independently, their strong-willed nature makes training a real practice in patience.

Socialization is the other half of the job. Introduce your puppy to a wide range of people, animals, and situations early and consistently, using the same positive-reinforcement approach, so it grows up settled and confident rather than aloof.

This is not a breed for a novice owner, given the attention and discipline it needs. For someone experienced with dominant, strong-willed dogs, it can be a good fit. Training one is a lifelong commitment that takes real dedication and patience.

Health conditions

6 conditions are documented for the Neapolitan Mastiff.

A predisposition is not a diagnosis. Ask your vet which screenings make sense for your dog's age.

Show all 6 conditions Show fewer
  • Hip and Elbow DysplasiaBone & Joint

Sources

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