Neapolitan Mastiff

The Neapolitan Mastiff is a giant dog belonging to the Working Group. Breed historians place its development in Italy, shaped by guard and draft work. Among AKC-registered breeds it sits at #128 by popularity. Adults typically stand 24–31 inches (61–78.7 cm) at the shoulder and weigh 120–150 pounds (54.4–68 kg), with males at the upper end of those ranges.

Published breed data puts a typical Neapolitan Mastiff lifespan at 7–9 years. The main levers behind that number are body size (smaller dogs usually outlive bigger ones), genetics, and how consistently a dog stays lean, exercised and current on preventive veterinary care. Size works against longevity here: giant breeds generally live shorter lives than smaller ones, so the upper end of this range deserves deliberate care. Individual lifespans vary widely with genetics, body condition, preventive care and disease; published ranges describe populations, not predictions for one dog.

This breed splits the difference between couch and trail, happy with consistent, unextreme exercise. Trainability is average — consistent, reward-based sessions work well. With socialization, children and this breed get along well; supervise the early years. Other dogs are usually accepted, particularly with early socialization.

Medium-sized homes suit this breed fine; true apartments depend on the dog and the schedule. Shedding is moderate; expect some hair on furniture, heaviest during seasonal coat changes. Grooming is moderate, with regular brushing and periodic baths keeping the coat healthy. No low-shedding claim applies here. Allergy sufferers should spend time with the breed before committing.

We benchmark every breed against the other 152 in our data: at an average 61.2 kg sits heavier than 97% of them. Size rank translates directly into budget: feeding and equipping this breed costs what that weight class costs anywhere. All figures on this page come from the AKC breed profile cited below, and the calculators linked here use those same numbers for feeding portions, crate sizing, age conversion and first-year costs. Because breed-specific health risks affect veterinary spending, comparing pet insurance while your dog is young and healthy is usually worthwhile.