PuppyBase

Harrier vs Neapolitan Mastiff

Side-by-side comparison across all 14 AKC trait ratings, with a clear verdict on which breed fits which kind of household.

Perfect Puppy Quiz · 5 questions · 90 seconds

Not sure which breed fits your life?

Answer five questions about your home, your schedule, and your tolerance for shedding. We’ll match you to your top three breeds from over 200.

The bottom line

Harrier vs Neapolitan Mastiff

You don’t see many people torn between a Harrier and a Neapolitan Mastiff. But somehow, both end up on the same Pinterest board: one’s a lean, fox-hound lookalike baying across open fields; the other’s a mountain of wrinkles with a face like a melted candle. The real reason they’re compared? They’re both rare, both pack-oriented in temperament, and both carry that old-world charm that makes dog nerds swoon. But that’s where the romance ends. The Harrier is built for motion. Think of a beagle on espresso. tall, tireless, and loud. If you’re hiking, hunting, or just want a dog who’s genuinely thrilled to join the family bike ride, this one’s magic. It bonds deeply with kids, thrives on activity, and will make your backyard feel like a nature preserve. But it will bark, and it won’t come back if it catches a scent. You need time, space, and energy. The Neapolitan Mastiff is the opposite. It moves like it’s doing you a favor just standing up. This dog is a fortress on a leash. loyal, imposing, and deeply suspicious of change. It won’t bark much, but it will loom. It’s not cuddly in the puppyish way; it’s more like a dignified king who tolerates affection. And yes, it drools on your guest’s coat. A lot. One thing no breeder will tell you: the Harrier’s greatest strength. its independence. is also its downfall in suburban homes. And the Mastiff? Its silence is deceptive. That quiet bulk isn’t lazy. It’s calculating. This dog knows it could end you. You’d better earn its respect. Pick the Harrier if you live for the outdoors and want a dog who’s always game. Pick the Mastiff if you want a guardian, have the experience to handle a giant, and don’t mind cleaning slobber off the walls. One’s a sprinter with a voice. The other’s a silent tank. Choose your adventure.

Harrier
Neapolitan Mastiff
19–21 in
Height
24–31 in
45–60 lb
Weight
110–150 lb
12–15 yr
Lifespan
7–9 yr
$1.0–2.5k
Puppy price
$2.0–5.0k
#189
AKC popularity
#102

Trait-by-trait

Higher bar = more of that trait. Shedding, barking, drooling, grooming flipped for readability.
Affectionate w/ Family
Good with Young Children
Good with Other Dogs
Shedding Level
Coat Grooming
Drooling Level
Good with Strangers
Playfulness
Watchdog / Protective
Adaptability
Trainability
Energy Level
Barking Level
Mental Stimulation Needs
AffectionGood w/ KidsGood w/ DogsShedding LevelGroomingDrooling LevelGood w/ StrangersPlayfulnessProtectiveAdaptabilityTrainabilityEnergy LevelBarking LevelMental Stim.
Harrier Neapolitan Mastiff
Overlay

Where they diverge

Barking Level
Neapolitan Mastiff barks less (4-point difference)
Neapolitan
Drooling Level
Harrier drools less (3-point difference)
Harrier
Affectionate w/ Family
Harrier is more affectionate (2-point difference)
Harrier
Good with Young Children
Harrier is better with kids (2-point difference)
Harrier
Good with Other Dogs
Harrier is better with other dogs (2-point difference)
Harrier
The verdict

Choose the Harrier if…

  • Active families
  • Hunters
  • Rural living
  • You value barking levelHarrier scores noticeably higher.

Choose the Neapolitan Mastiff if…

  • Experienced large-breed owners
  • Those wanting an imposing guard dog
  • Homeowners with space
  • You value drooling levelNeapolitan Mastiff scores higher here.
Harrier Owner’s Guide
Everything you need before bringing your Harrier home.
Breed variants, breeder red flags, and what to ask
First-week checklist and daily schedules by age
Training timeline from 8 weeks to adulthood
Health screenings, emergency card, and feeding portions
Grooming schedule, first-year costs, and what nobody tells you
Get Your Guide
Neapolitan Mastiff Owner’s Guide
Everything you need before bringing your Neapolitan Mastiff home.
Breed variants, breeder red flags, and what to ask
First-week checklist and daily schedules by age
Training timeline from 8 weeks to adulthood
Health screenings, emergency card, and feeding portions
Grooming schedule, first-year costs, and what nobody tells you
Get Your Guide

Other comparisons people run