How Big Will My Great Pyrenees Get?
Great Pyreneess are a giant breed that typically weigh 36–54 kg (79–119 lbs) at full size. Giant breeds are the slowest to mature, often not reaching their full adult weight until 18–24 months.
Great Pyrenees Size at a Glance
Adult Weight
36–54 kg
79–119 lbs
Adult Height
64–81 cm
25–32 in
Size Category
giant
Fully Grown By
18–24 mo
Great Pyrenees Growth Chart
Great Pyrenees Weight by Age
Predict Your Great Pyrenees Puppy's Adult Weight
Enter your puppy's current age and weight for a personalized prediction.
Open Weight CalculatorGreat Pyrenees Growth & Development
Giant breeds are the slowest to mature, often not reaching their full adult weight until 18–24 months. They have an extended growth period that requires careful nutrition management.
A Great Pyrenees's growth rate is fastest in the first 6 months of life. For larger breeds like the Great Pyrenees, it's important not to over-feed during the growth phase, as rapid weight gain can put stress on developing joints and bones.
Factors that influence your Great Pyrenees's adult size include genetics (parent size), nutrition quality, spay/neuter timing, and overall health. Males typically weigh 10–20% more than females.
Frequently Asked Questions
How big will my Great Pyrenees puppy get?
A full-grown Great Pyrenees typically weighs between 36–54 kg (79–119 lbs). Males tend to be on the larger end of the range while females are usually smaller.
When do Great Pyreneess stop growing?
Giant breeds are the slowest to mature, often not reaching their full adult weight until 18–24 months. They have an extended growth period that requires careful nutrition management. Individual dogs may reach their full size slightly earlier or later depending on genetics, diet, and overall health.
How much should a Great Pyrenees puppy weigh at 12 weeks?
At 12 weeks, a Great Pyrenees puppy typically weighs around 13.5–18 kg (30–40 lbs), which is roughly 30–40% of their adult weight.
How can I tell if my Great Pyrenees puppy is the right weight?
Compare your puppy's weight to the growth chart above. A healthy Great Pyrenees puppy should follow a steady growth curve. If your puppy's weight deviates significantly from the expected range, consult your veterinarian.
Learn More About Great Pyreneess
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