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Breeds › Large dog breeds › Bullmastiff

🐾 Bullmastiff — Complete Breed Profile

✓ Profile verifiedSource: AKC · AKC official breed standard (PDF) · Parent-club health statement (PDF)Verified: Oct 17, 2026

Bullmastiff — a loyal, affectionate and brave companion from England. "Fearless at work, docile at home, the Bullmastiff is a large, muscular guarder who pursued and held poachers in Merry Old England'¿merry, we suppose, for everyone but poachers." — AKC breed profile. It is a working breed — developed for heavy jobs like guarding property, pulling loads, and rescue work. It currently ranks #67 in AKC registrations. Recent trend: #60 (2023) → #67 (2024) → #78 (2025).

Bullmastiff — breed profile photo

Photo: File:A pure and female Boxer dog in Iran 03.jpg by Mostafameraji, CC0 via Wikimedia Commons. Believe an image infringes your rights? Report it — we remove within 24 h.

GroupWorking Group
SizeXLarge
Weight45–59 kg (100–130 lb)
Height24–27 in (61–69 cm)
Lifespan7-9 years
OriginEngland
AKC recognized1934
Exercise60–90/day
TrainabilityGood
SheddingModerate

📈 AKC registration rank, 2015–2025

Lower number = more popular. Rank #78 in 2025.

15
16
17
18
19
20
21
22
23
24
25

AKC-recognized colors: Fawn · Fawn Brindle · Red · Red Brindle · Red Fawn · Red Fawn Brindle

Temperament & behavior

AKC temperament summary: loyal / affectionate / brave. Adaptability 3/5, affection with family 4/5, openness to strangers 3/5, barking 1/5 (only to alert — naturally quiet housemate), watchdog/protective nature 5/5.

Likes, dislikes & how they play

💙 What they love

  • Long brisk walks, hikes, or jogs
  • Being in the middle of family life
  • Having a job: watching over home and people
  • Puzzle toys, scent games, training challenges

🚫 What they hate

  • Skipping daily exercise (energy turns into mischief)
  • Long days home alone
  • Being bored without a job to do
  • Rough, chaotic handling

Think athletic: running, hiking, and long fetch sessions. Mental work (scenting, trick training) matters as much as the physical miles.

Shedding & grooming

Shedding: Moderate. Shedding 3/5, coat-grooming frequency 1/5, coat length varies. Moderate, steady shedding.

Minimal grooming: a quick weekly brush, nails monthly, ears checked occasionally.

Aggression tendencies — the honest read

TowardTendency
StrangersPolite once introduced — may be aloof at first
Other dogsUsually fine with other dogs (supervised intros)

A real guarding instinct comes standard; channel it through socialization and basic obedience rather than encouraging suspicion.

Exercise needs

60–90 per day per day. Energy level 4/5, mental-stimulation needs 4/5. Physical walks alone will not tire this dog — add brain work.

Good with…?

Health risks to know upfront

Is this breed right for you?

Active people who genuinely enjoy daily exercise; commitment to socializing a natural guardian.

Before choosing, read the complete pre-dog checklist — most mismatches are preventable with one honest evening of planning.

Sources & verification

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