How Big Do Great Pyreneess Get? Size & Growth Guide
Great Pyrenees full size: 85-160 lbs, large breed. Growth timeline from puppy to adult, weight chart, and when they stop growing.
Full-Grown Size
Great Pyreneess are a large breed, reaching 85-160 lbs at full maturity. Large breeds take 12-24 months to reach their adult size, with most of their height achieved by 12 months and filling out continuing until 18-24 months.
Weighing around 85-160 lbs and lifespan of 10-12 yrs, the Great Pyrenees benefits from care tailored to its physical and behavioral profile. We've organized the most relevant information below.
Growth Timeline
Understanding breed tendencies equips you to anticipate needs, even as individual personalities vary. Great Pyreneess with low energy levels are more laid-back but still need daily engagement.
- Size: large (85-160 lbs)
- Energy Level: Low
- Shedding: Heavy
- Common Health Issues: Bloat, Hip Dysplasia, Bone Cancer
- Lifespan: 10-12 yrs
Weight Chart by Age
Care that accounts for breed predispositions leads to earlier detection and better prevention. Care for Great Pyreneess has to account for a large frame, a heavy shedding profile, and breed-linked risk around bloat and hip dysplasia.
Preventive veterinary care, following AAHA guidelines of annual exams for adults and biannual exams for seniors, enables earlier detection of breed-related conditions. Given the breed's health tendencies, proactive screening is important for this breed.
Male vs Female Size
The key to a happy, healthy Great Pyrenees is matching your care approach to their breed characteristics. Mental engagement during activity sessions multiplies the benefit — a training walk where the animal practices commands is more valuable than the same distance walked passively.
- Provide 20–30 minutes of daily exercise appropriate to their energy level
- Feed a high-quality diet formulated for large breed dogs (1,400–2,200 calories/day)
- Maintain a daily brushing grooming routine
- Schedule breed-appropriate health screenings for bloat
- Pet insurance enrolled early typically offers the best value, covering breed-related conditions before they develop
Factors Affecting Size
Several breed-specific considerations deserve attention beyond routine care protocols. As a working breed, the Great Pyrenees has instincts and behaviors shaped by centuries of selective breeding for specific tasks.
Many experienced Great Pyrenees owners recommend puzzle toys and interactive feeders for mental stimulation without overexertion.
Enrichment does not require expensive equipment. For Great Pyrenees, simple activities like hiding treats around the house for discovery, using a muffin tin with tennis balls over kibble, or practicing basic obedience in new locations provide effective cognitive engagement. The goal is not complexity — it is variety and appropriate challenge level.
When They Stop Growing
Many breed-associated conditions are manageable when detected early but become significantly more complex — and expensive — when diagnosis is delayed. Watch for early signs of bloat, maintain regular veterinary visits, and keep your dog at a healthy weight — excess weight worsens most of the conditions Great Pyrenees are prone to.
Bring these numbers to the vet as a starting point; the personalisation that actually matters comes from matching them to the individual animal.
Veterinary Care Schedule for Great Pyreneess
Regular veterinary visits allow early detection of breed-associated conditions, when treatment is most effective. The recommended schedule for your Great Pyrenees. These are baseline recommendations.
| Life Stage | Visit Frequency | Key Screenings |
|---|---|---|
| Puppy (0-1 year) | Every 3-4 weeks until 16 weeks, then at 6 and 12 months | Vaccinations, deworming, spay/neuter (consult AVMA guidelines on optimal timing) consultation |
| Adult (1-7 years) | Annually | Physical exam, dental check, heartworm test, vaccination boosters |
| Senior (7+ years) | Every 6 months | Blood work, urinalysis, Bloat screening, Hip Dysplasia screening, Bone Cancer screening |
Great Pyreneess should receive breed-specific screening for bloat starting at 1-2 years of age, as large breeds develop structural issues early. Screening before symptoms appear makes a meaningful difference in outcomes.
Cost of Great Pyrenees Ownership
Before committing to ownership, evaluate whether these costs are sustainable long-term for Great Pyrenees ownership.
- Annual food costs: $600–$1,200 for high-quality dog food
- Veterinary care: $300–$700 annually for routine visits, plus potential emergency costs
- Grooming: $65–100 per professional session (daily brushing home grooming recommended)
- Pet insurance: $50–80/month for comprehensive coverage
- Supplies and toys: $200–$500 annually for bedding, toys, leashes, and other essentials
More Great Pyrenees Guides
More pages about Great Pyrenees.
- Great Pyrenees Diet & Nutrition Guide
- Great Pyrenees Pet Insurance Cost
- How to Train a Great Pyrenees
- Great Pyrenees Grooming Guide
- Great Pyrenees Health Issues
- Great Pyrenees Temperament & Personality
- Great Pyrenees Exercise Needs
- Great Pyrenees Cost of Ownership
Key Questions
Owners who track changes early usually spot problems sooner.
What are the most important considerations for how big do great pyreneess get?
Give weight to what’s modifiable: diet, exercise, routine, and early screening. Genetics and temperament are fixed, but how you manage them isn’t.