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Great Pyrenees Growth Chart

Male adult weight100–120 lb45.4–54.4 kg
Female adult weight85–100 lb38.6–45.4 kg

Great Pyrenees are calm, majestic livestock guardians with a thick white coat. Adults typically weigh 85–120 lb, with males heavier than females. Most reach adult weight around 24 months.

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Calculate Your Great Pyrenees Puppy's Adult Weight

Enter your Great Pyrenees puppy's age and current weight for an estimated adult weight range.

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Great Pyrenees weight by age

Typical male and female puppy weight ranges by age, available in lb and kg. Individual puppies may vary.

Most Great Pyrenees puppies approach adult weight around 24 months, although individuals may finish earlier or later.

Weight unit
Expected Great Pyrenees puppy weight at key ages in lb or kg
AgeTypical male rangeTypical female range
2 months (8 weeks)10.6–28.3 lb4.8–12.8 kg9–23.6 lb4.1–10.7 kg
3 months (12 weeks)15.6–34.3 lb7.1–15.6 kg13.3–28.6 lb6–13 kg
4 months (16 weeks)20.1–39.7 lb9.1–18 kg17.1–33.1 lb7.8–15 kg
5 months (20 weeks)24.3–44.8 lb11–20.3 kg20.7–37.3 lb9.4–16.9 kg
6 months (24 weeks)28.3–49.6 lb12.8–22.5 kg24.1–41.3 lb10.9–18.7 kg
7 months (32 weeks)35.7–58.4 lb16.2–26.5 kg30.3–48.7 lb13.7–22.1 kg
9 months (40 weeks)42.7–66.8 lb19.4–30.3 kg36.3–55.7 lb16.5–25.3 kg
1 year (52 weeks)52.6–78.7 lb23.9–35.7 kg44.7–65.6 lb20.3–29.8 kg
18 months (78 weeks)72.3–102.4 lb32.8–46.4 kg61.5–85.3 lb27.9–38.7 kg
24 months (104 weeks)93.5–120 lb42.4–54.4 kg79.5–100 lb36.1–45.4 kg

These estimated ranges combine the breed's adult weights with a size-based growth curve. They are not measured breed-specific percentiles or health targets. Month labels are rounded approximations; use the week values for each row. How these weight ranges are calculated

Great Pyrenees Growth Stages

Understanding the typical growth stages helps you know what to expect as your Great Pyrenees puppy grows.

Neonatal

0–2 weeks

Puppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.

Socialization

3–12 weeks

Eyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.

Juvenile

3–8 months

Rapid growth continues. Puppies become more independent, start teething, and develop coordination.

Adolescent

8–18 months

Growth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.

Young Adult

18–24 months

Growth is nearly complete. Your puppy is filling out and approaching adult proportions.

Adult

24+ months

Your puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.

Great Pyrenees FAQ

How much will my Great Pyrenees puppy weigh as an adult?

Most adult Great Pyrenees typically weigh between 85 and 120 lb. Males often reach 100–120 lb, while females usually finish at 85–100 lb.

At what age is a Great Pyrenees fully grown?

Great Pyrenees usually mature around 24 months. They are slow, steady growers by nature.

How accurate is a Great Pyrenees puppy weight chart?

Charts show typical trends, not guarantees. Working guardian lines can run leaner than show lines. Track the trend over months.

Do male and female Great Pyrenees grow differently?

Males are larger with heavier bone and a fuller mane, typically 15–20 lb heavier than females.

How much should I feed my Great Pyrenees puppy?

Feed a giant-breed puppy formula in measured meals. Despite their size, Pyrenees have relatively modest appetites — do not overfeed to speed growth. Ask your vet about portions.

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