PuppyBase

Bullmastiff vs Weimaraner

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 Weimaraner

People compare Bullmastiffs and Weimaraners because both are big, striking dogs with short coats and a reputation for loyalty. But that’s where the similarities end. If you’re torn between them, you’re really choosing between a living fortress and a high-performance athlete. The Bullmastiff is the calm in the storm. At 100 to 130 pounds, this dog was bred to pin poachers, not chase them. He’s got a low bark, a deep sense of loyalty, and will follow you from room to room like a furry shadow. But he’s not for the faint of heart. his size alone demands space and confident handling. Kids under 8? Probably not ideal. He’s affectionate but not hyper, scoring high on devotion but lower on adaptability. You need a yard, time for moderate exercise, and the ability to manage potential health issues like bloat and dysplasia. Then there’s the Weimaraner. sleek, silver, and absolutely wired. This dog lives to move. Bred to hunt everything from deer to birds, he’s got energy dialed to 11. If you don’t run, hike, or at least have a big yard and time for training, don’t get one. He’s more kid-friendly and adaptable than the Bullmastiff, but leave him alone and you’ll come home to a demolition zone. They bond fiercely, almost Velcro-like, and demand mental stimulation every single day. Here’s the real talk: the Bullmastiff will guard your home without you asking. The Weimaraner will guard your hiking shoes. because he knows you’re supposed to be moving. Pick the Bullmastiff if you want a stoic protector. Pick the Weimaraner if you want a partner who’s always ready for the next adventure. One is a sentinel. The other is a co-pilot. Know which you need.

Bullmastiff
Weimaraner
24–27 in
Height
23–27 in
100–130 lb
Weight
55–90 lb
7–9 yr
Lifespan
10–13 yr
$1.5–3.5k
Puppy price
$1.5–3.0k
#51
AKC popularity
#36

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 Weimaraner
Overlay

Where they diverge

Good with Young Children
Weimaraner is better with kids (2-point difference)
Weimaraner
Playfulness
Weimaraner is more playful (2-point difference)
Weimaraner
Barking Level
Bullmastiff barks less (2-point difference)
Bullmastiff
Affectionate w/ Family
Weimaraner is more affectionate (1-point difference)
Weimaraner
Coat Grooming
Bullmastiff needs less grooming (1-point difference)
Bullmastiff
The verdict

Choose the Bullmastiff if…

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

Choose the Weimaraner if…

  • Active families with space
  • Hunters
  • Runners and hikers
  • You value good with young childrenWeimaraner 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
Weimaraner Owner’s Guide
Everything you need before bringing your Weimaraner 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