PuppyBase

Bullmastiff vs Saint Bernard

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

Bullmastiff vs Saint Bernard

People compare Bullmastiffs and Saint Bernards because they’re both massive, drool-worthy gentle giants from the Working Group, but that’s where the similarities end. If you’re picturing a big dog lounging on your porch, you’re not wrong. but which one actually fits your life is a whole different story. The Bullmastiff is the quiet bodyguard. Bred to silently pin poachers, not bark at them, this dog is intensely loyal and alert but reserved. It’s not the kind of dog that greets everyone with a slobbery grin. It’ll love you deeply, but it won’t apologize for its presence. It’s more intense, needs consistent training, and doesn’t adapt well to small spaces or chaotic homes with little kids. If you’ve had dogs before and want a devoted, no-nonsense companion with a protective edge, this is your breed. The Saint Bernard? That’s the dog your kids’ friends beg to visit. Bred to dig travelers out of snowdrifts, it’s a soft-hearted, goofy, affectionate mountain of fur. It drools more, sheds like a carpet factory, and will track mud like it’s an Olympic sport. But it’s incredibly patient with children, adapts better to different homes, and has a sweet, easygoing charm. It’s not a guard dog. it’ll probably lick an intruder into surrender. Here’s the real talk: both are prone to bloat and expensive vet bills. But the Bullmastiff often burns out early, rarely making it past 9 years. The Saint Bernard might live a year longer, but its sheer size means more wear on joints, more food, more mess. If you’re not ready to clean drool off your walls or spend $150 a month on food, neither of these dogs should be on your couch. Pick the Bullmastiff if you want a vigilant, compact powerhouse. Pick the Saint Bernard if you want a loving, laid-back giant who thinks he’s a lap dog.

Bullmastiff
Saint Bernard
24–27 in
Height
26–30 in
100–130 lb
Weight
120–180 lb
7–9 yr
Lifespan
8–10 yr
$1.5–3.5k
Puppy price
$1.5–4.0k
#51
AKC popularity
#48

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.
Bullmastiff Saint Bernard
Overlay

Where they diverge

Good with Young Children
Saint Bernard is better with kids (2-point difference)
Saint
Drooling Level
Bullmastiff drools less (2-point difference)
Bullmastiff
Affectionate w/ Family
Saint Bernard is more affectionate (1-point difference)
Saint
Coat Grooming
Bullmastiff needs less grooming (1-point difference)
Bullmastiff
Adaptability
Saint Bernard is more adaptable (1-point difference)
Saint
The verdict

Choose the Bullmastiff if…

  • Experienced dog owners
  • Families with older children
  • Homeowners with fenced yards
  • You value trainabilityBullmastiff scores noticeably higher.

Choose the Saint Bernard if…

  • Families with children
  • Those wanting a gentle giant
  • Cold climate households
  • You value good with young childrenSaint Bernard scores higher here.
Bullmastiff Owner’s Guide
Everything you need before bringing your Bullmastiff 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
Saint Bernard Owner’s Guide
Everything you need before bringing your Saint Bernard 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