Bullmastiff

Bullmastiff 101: Traits, Shedding and Exercise Needs for Busy Families

The Bullmastiff is a powerful, dignified guardian—calm at home, courageous when needed, and famously devoted to family. Bred to silently apprehend poachers, the breed is confident, affectionate, and relatively low-energy indoors. If you’re asking “Are Bullmastiffs good family dogs?”—yes, in experienced homes with clear rules and early socialization. “Do Bullmastiffs drool?”—often. “Do Bullmastiffs shed?”—light to moderate. Heat management, joint care, and polite-manners training are musts.

Breed Group
Activity Level
Low
Size Category
Extra Large
Coat Type
Short
Coat Texture
Dense
Activity Level
Low
Trainability
Moderate
Shedding Level
Moderate
Family Friendly
With Older Kids
Apartment Friendly
No
Hypoallergenic
No
Breed Type
Purebred
A photograph captures a Bullmastiff sitting attentively on a dirt path in a forest, showcasing its muscular build and fawn coat with a black facial mask.

Breed History of the Bullmastiff

Created in late 19th-century England by crossing Mastiffs with Bulldogs (roughly 60/40), the Bullmastiff was the gamekeeper’s night dog, bred to track quietly, rush, and pin poachers without mauling. Selective breeding fixed a powerful build, a dark mask, and a steady, reliable temperament. Recognized across major registries, today’s Bullmastiff remains a superb property guardian and loving companion when well trained and socialized.

Bullmastiff Appearance: Size, Coat & Distinctive Features

A large, solid, rectangular Molosser with a broad head and black mask.

  • Weight: Males ~110–130 lb (50–59 kg); females ~90–120 lb (41–54 kg)
  • Height: Males ~25–27 in (64–69 cm); females ~24–26 in (61–66 cm)
  • Coat Type: Short, dense, weather-resistant single coat
  • Coat Colors: Fawn, red, or brindle, all with black mask; small white on chest permitted
  • Distinctive Physical Traits: Broad skull, strong muzzle, deep chest, heavy bone, straight back, thick tapering tail, deliberate ground-covering gait

How to Groom a Bullmastiff: Coat Care & Maintenance

Low coat maintenance; routine skin and drool care.

  • Brushing: 1–2×/week (rubber curry/bristle brush)
  • Bathing: Every 6–8 weeks or as needed; dry thoroughly (armpits/neck)
  • Face/Drool: Wipe lips and muzzle after meals/water; keep chin/neck dry
  • Ears/Teeth/Nails: Clean ears weekly; brush teeth 2–3×/week; trim nails every 2–4 weeks
  • Shedding: Light to moderate; seasonal uptick in spring/fall

Bullmastiff Exercise Needs: Daily Activity & Playtime Tips

Moderate, joint-friendly exercise; avoid heat and pounding.

  • Daily Duration: 45–60 minutes total (split calm walks + training/enrichment)
  • Ideal Activities: Power walking, hiking on soft surfaces, controlled fetch, obedience/rally, scent/nose work
  • Puppies/Adolescents: Protect growing joints—limit stairs, jumping, repetitive running
  • Climate Notes: Heat-sensitive; exercise in cool hours and provide shade/water

Training a Bullmastiff: Behavior, Commands & Socialization

Steady, intelligent, and independent—calm consistency is key.

  • Approach: Positive reinforcement; short, clear sessions; avoid harsh corrections
  • Focus Areas: Loose-leash walking (they’re strong), impulse control (doors/visitors), reliable recall, polite greetings, place/settle
  • Socialization: Early, broad exposure to people, dogs, surfaces, and handling
  • Cooperative Care: Muzzle training, nail work, vet/grooming handling—start early

Bullmastiff Diet: Feeding Schedule & Nutrition Tips

Grow slow and keep lean for joint and heart health.

  • Food Type: Large/giant-breed formula or balanced fresh diet tailored to giants
  • Daily Quantity: ~4–7 cups/day total, split into two meals (varies by dog/food)
  • Puppies: Giant-breed puppy nutrition with controlled calcium/phosphorus
  • Add-Ons: Omega-3s (EPA/DHA) for joints/skin; joint supplements as advised
  • Bloat Safety: Avoid heavy exercise 60–90 min before/after meals; consider slow feeders; discuss prophylactic gastropexy with your vet

Bullmastiff Health Issues: Common Problems & Lifespan

A robust guardian with size- and breed-linked risks—select for health-tested lines.

  • Orthopedic: Hip and elbow dysplasia, cruciate tears
  • Cardiac: Subaortic stenosis (SAS) and other heart disease in some lines—screening recommended
  • Oncology: Cancers can occur in giants (e.g., osteosarcoma/hemangiosarcoma in some families)
  • Eyes/Skin: Entropion/ectropion; hot spots/pyoderma if damp; allergies in some
  • Endocrine: Hypothyroidism (some lines)
  • GI: Gastric dilatation–volvulus (bloat/GDV) risk
  • Life Expectancy: 7–10 years
  • Recommended Testing (breeders): Hips/elbows (OFA/FCI), cardiac evaluation (ideally echocardiogram), ophthalmologist (CAER), thyroid panel; discuss bloat prevention and cancer history

Where to Adopt or Find Bullmastiff Puppies in Canada

Temperament, health screening, and lifelong support matter.

  • Breeders: Choose CKC-affiliated preservation breeders who provide orthopedic/eye/heart/thyroid results, stable guardian temperaments, and lifetime take-back
  • Adoption: Mastiff/guardian rescues; breed clubs may rehome adults—ask about health/temperament records
  • Canadian Resources: CKC breeder directory; Bullmastiff Fanciers of Canada; provincial working/obedience clubs (ON/BC/QC/AB) for training support

Frequently Asked Questions About the Bullmastiff

Are Bullmastiffs good family dogs?
Yes—loyal and gentle in experienced homes with early socialization, training, and supervision due to size.

Do Bullmastiffs drool?
Yes—often after eating, drinking, or exercise. Keep towels handy.

Do Bullmastiffs shed a lot?
Light to moderate. Weekly brushing controls hair/dander.

Are Bullmastiffs hypoallergenic?
No.

How much exercise does a Bullmastiff need?
About 45–60 minutes daily of low-impact walks plus training/enrichment.

Are Bullmastiffs good apartment dogs?
Possible for committed owners with strong routines, space planning, and daily outdoor time; easier with a fenced yard.

Bullmastiff vs English Mastiff—what’s different?
Bullmastiffs are smaller, more agile, and more guardian-focused (bred to apprehend); English Mastiffs are larger, typically mellower, and more laid-back giants.

What health tests should breeders do?
Hips/elbows, cardiac (echo), CAER eyes, and thyroid; discuss bloat prevention and family cancer history.

How do I manage heat safety?
Walk at cool times, provide shade/water, avoid mid-day exertion, and monitor for heavy panting—never overheat a guardian breed.

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A photograph captures a Bullmastiff sitting attentively on a dirt path in a forest, showcasing its muscular build and fawn coat with a black facial mask.
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