Calculate the adult weight for your Great Pyrenees. Just type your puppy’s current weight and age, and see how big your puppy gets.
Weight Predictions
Predicted Adult Weight
Based on current weight and age progression
AKC Breed Standard
Official AKC weight range for this breed
Breed Average
Average weight for this breed and gender
Growth Timeline
Important Notes
- These predictions are estimates based on breed standards and growth patterns
- Individual dogs may vary significantly from these predictions
- Factors like nutrition, health, and genetics affect final adult weight
- Consult your veterinarian for personalized growth assessments
Great Pyrenees Growth Guide
Breed Overview
The Great Pyrenees, also known as the Pyrenean Mountain Dog, was originally bred to guard flocks in the harsh mountainous regions between France and Spain. Known for their calm demeanor and strong protective instincts, they are loyal and gentle companions—especially with children and livestock. Despite their serene presence, they are independent thinkers with a strong will.
As a giant breed, the Great Pyrenees experiences prolonged growth and development. Tracking their weight and height is essential to prevent overfeeding, joint strain, and orthopedic issues commonly associated with large, fast-growing dogs.
Great Pyrenees Growth Chart & Weight Ranges
The following chart shows typical weight ranges for Great Pyrenees puppies. These values are averages—some pups may grow faster or slower based on genetics and nutrition.
| Age | Weight Range (Male) | Weight Range (Female) |
|---|---|---|
| 4 weeks | 5 – 8 lbs | 4 – 7 lbs |
| 8 weeks | 15 – 25 lbs | 12 – 22 lbs |
| 3 months | 30 – 40 lbs | 25 – 35 lbs |
| 4 months | 40 – 55 lbs | 35 – 45 lbs |
| 6 months | 60 – 75 lbs | 50 – 65 lbs |
| 9 months | 75 – 95 lbs | 65 – 85 lbs |
| 12 months | 85 – 110 lbs | 75 – 95 lbs |
| 18–24 months | 100 – 160 lbs | 85 – 115 lbs |
Note: Males typically weigh 10–30 lbs more than females at maturity and are noticeably more robust.
How Much Bigger Will My Great Pyrenees Puppy Get?
Most Great Pyrenees puppies reach about 50% of their adult weight by 4–5 months of age. They often attain most of their height by 9–12 months but will continue filling out in muscle and bone density well into their second year.
To estimate adult size:
Double your puppy’s weight at 16 weeks to get a rough idea of their adult weight. For example, a 45 lb puppy at 4 months may mature to around 90 lbs—but some may surpass this depending on lineage.
Important note: As a giant breed, full maturity is not reached until 18–24 months, with some males continuing to grow even longer.
For more detailed breed information, visit:
Great Pyrenees Growth Tips
Nutrition
- Feed a large- or giant-breed puppy formula with controlled calcium and phosphorus to support proper skeletal development.
- Provide 3 meals per day until 6 months of age, then reduce to 2 meals daily.
- Avoid overfeeding or excess protein/calories to prevent rapid growth, which increases the risk of joint issues.
Exercise
- Offer moderate, controlled exercise like short walks and supervised play.
- Avoid strenuous activity such as jumping, running long distances, or navigating stairs during the first 18 months.
- Provide mental stimulation—the Pyrenees is intelligent and benefits from training games and light obedience work.
Health Watch
- Growth-related health concerns include:
- Hip and elbow dysplasia
- Osteochondritis dissecans (OCD)
- Bloat (gastric torsion)
- Maintain a lean body condition throughout growth, and consult your vet about joint supplements (like glucosamine and chondroitin) starting in adolescence.
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