Pyrenean Mastiff

Originating in Aragón and surrounding regions of the Spanish Pyrenees, the Pyrenean Mastiff has guarded sheep and cattle for centuries, escorting flocks between mountain summer pastures and lowland winters. Selective breeding emphasized a stable temperament, imposing size, and the hallmark dark facial mask. Modern preservation began in Spain in the 1970s, and the breed is recognized by the FCI; it remains rare in North America and distinct from the Great Pyrenees (Pyrenean Mountain Dog).

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A massive, well-boned guardian with an impressive head, thick skin, and dark mask.

• Weight: 120–200 lbs (male), 100–160 lbs (female)
• Height: 30–32 in (male), 28–30 in (female)
• Coat Type: Medium-length, dense double coat; weather-resistant
• Coat Colors: Predominantly white with clearly defined patches (fawn, brindle, black, gray, tan, etc.); always with a mask
• Distinctive Physical Traits: Large head with pronounced stop, dark mask, broad chest, heavy bone, moderate dewlap, plumed tail carried low at rest

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Surprisingly straightforward coat care, but expect seasonal snowstorms of undercoat—and some drool.

• Brushing: 1–2×/week; daily during spring/fall coat “blows”
• Bathing: Every 6–10 weeks or as needed; fully dry undercoat
• Drool Care: Keep absorbent cloths handy after meals/water
• Ear Cleaning: Weekly, especially for rural/wet environments
• Nail Trimming: Every 3–4 weeks
• Shedding: Moderate to heavy seasonally

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Moderate needs for a giant breed; prefers purposeful movement over sprints.

• Daily Exercise: 45–60 minutes (leisurely walks, acreage patrols)
• Ideal Activities: Secure property patrols, hiking on soft surfaces, carting at low intensity
• Suitability: Best for rural/semi-rural homes with strong fencing; not ideal for apartments or very hot climates

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An independent thinker bred to make decisions—fair, consistent guidance is key.

• Approach: Positive reinforcement; short, calm sessions; avoid harsh corrections
• Socialization: Early, ongoing exposure to people, stock, vehicles, sounds; supervised kid etiquette
• Foundation Skills: Boundary training, rock-solid recall, cooperative care (grooming, vet handling)
• Impulse Control: Teach “leave it,” calm greetings, and a reliable “place”/mat cue

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Feed for slow, steady growth and joint health—especially in the first 18–24 months.

• Food Type: Large/giant-breed formula kibble or balanced fresh diet formulated for giant breeds
• Daily Quantity: ~5–8 cups/day split into 2–3 meals (adjust to age/workload)
• Feeding Schedule: Two meals (puppies may need three)
• Diet Advice: Prevent rapid growth; add omega-3s (EPA/DHA) for joints/skin; consider joint supplements; use slow feeders and avoid vigorous activity 60–90 minutes before/after meals to reduce bloat (GDV) risk

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Rare in Canada; plan ahead and verify health/temperament proofs.

• Breeders: Seek FCI/CKC-affiliated or reputable import breeders who provide hip/elbow/eye clearances and stable temperament around livestock and children
• Contracts: Health guarantees, return-to-breeder clause, and structured puppy socialization plans
• Adoption: Check Canadian LGD rescues and rural rehoming networks; ask Spanish breed clubs for vetted contacts
• Canadian Resources: CKC breeder directory (limited), Spanish Pyrenean Mastiff Club referrals, provincial LGD associations (AB/ON/QC)

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Generally robust for a giant dog, but size-related issues require vigilance.

• Common Issues: Hip and elbow dysplasia, gastric dilatation–volvulus (bloat), entropion/ectropion, obesity, osteoarthritis with age
• Life Expectancy: 10–12 years
• Recommended Testing: Hips/elbows (OFA/FCI), ophthalmologist (entropion/ectropion), breeder-discussed bloat management plan (e.g., gastropexy options)

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Are Pyrenean Mastiffs good with children?
Yes—gentle and tolerant when well socialized; always supervise due to size.

Do Pyrenean Mastiffs drool?
Yes. Keep towels handy after water/food or excitement.

How much exercise does a Pyrenean Mastiff need?
About 45–60 minutes daily of low-impact activity and secure roaming.

Are Pyrenean Mastiffs good apartment dogs?
Generally no—their size and guardian nature suit fenced acreage.

How much does a Pyrenean Mastiff eat?
Typically 5–8 cups/day split into 2–3 meals; adjust to age, metabolism, and activity.

Pyrenean Mastiff vs. Great Pyrenees—what’s the difference?
Both are LGDs; the Mastiff is usually larger with a required dark mask and patching, and often more overtly imposing.

Do they shed a lot?
Moderately most of the year; heavily during seasonal coat blows.

How can I reduce bloat risk?
Feed multiple small meals, use slow feeders, manage stress, and restrict vigorous activity around meals; speak to your vet about prophylactic gastropexy.

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