Adult range
Official adult size starts around 85-100 lb
AKC lists females at 85 lb and up and males at 100 lb and up. The Great Pyrenees Club of America also notes weight should stay in proportion to size and structure.
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Estimates only. Not veterinary advice.
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Great Pyrenees grow slowly into giant guardian dogs with heavy bone and a thick white coat. This guide connects the weight chart with hands-on body checks, joint comfort, steady feeding, coat volume, and the need to keep a massive frame lean enough for easy movement.
A healthy Great Pyrenees should feel substantial under the coat without a padded waist.

Overview
Adult range
39-73 kg
86-160.9 lb
Size class
Giant breed
Matched size chart
Growth pace
Slower
Typical for this breed size
Check-in cadence
Weekly to monthly
Suggested rhythm
<16 w weekly | 16-32 w biweekly | 32 w+ monthly
Quick answers
Use these answers before reading the full chart. Great Pyrenees weight should be read through sex, frame, coat, movement, and body condition.
Adult range
AKC lists females at 85 lb and up and males at 100 lb and up. The Great Pyrenees Club of America also notes weight should stay in proportion to size and structure.
Growth timing
A Great Pyrenees may look tall around the first year, but body mass, chest, coat, muscle, and adult condition often continue settling well into the second year.
Best check
The breed standard warns that the coat can deceive people who do not feel bone and muscle. Check ribs, waist, shoulder, hip, and movement during grooming.
Safety
Use measured meals, calmer activity around feeding, and urgent vet care for repeated unproductive retching, tight abdomen, collapse, or sudden severe distress.
Weight by age
Great Pyrenees puppies grow slowly into giant, thick-coated livestock guardians. The healthiest trend is steady gain, easy movement, comfortable joints, and a body that feels substantial under the coat without extra padding.
Use this chart as planning context, not a medical target. Males usually finish heavier than females, and the coat can make a thin, ideal, or overweight dog look bigger than it feels.
| Age | Male Weight | Female Weight |
|---|---|---|
| 8 weeks | 15-30 lb (6.8-13.6 kg) | 10-25 lb (4.5-11.3 kg) |
| 3 months | 30-45 lb (13.6-20.4 kg) | 25-40 lb (11.3-18.1 kg) |
| 4 months | 45-60 lb (20.4-27.2 kg) | 35-50 lb (15.9-22.7 kg) |
| 5 months | 55-75 lb (24.9-34 kg) | 45-65 lb (20.4-29.5 kg) |
| 6 months | 65-85 lb (29.5-38.6 kg) | 50-70 lb (22.7-31.8 kg) |
| 8 months | 80-105 lb (36.3-47.6 kg) | 60-85 lb (27.2-38.6 kg) |
| 10 months | 90-120 lb (40.8-54.4 kg) | 70-95 lb (31.8-43.1 kg) |
| 12 months | 95-130 lb (43.1-59 kg) | 75-105 lb (34-47.6 kg) |
| 18 months | 100-145 lb (45.4-65.8 kg) | 80-115 lb (36.3-52.2 kg) |
| 24 months | 100-160 lb (45.4-72.6 kg) | 85-120 lb (38.6-54.4 kg) |
Maturity
Great Pyrenees growth is slow and layered. Height, weight, coat, muscle, chest, and adult condition can all settle on different timelines.
This is a high-change stage, but fast gain is not the goal. Use measured meals, regular weigh-ins, and a suitable large or giant-breed puppy diet.
The puppy may already look huge, but joints, coordination, muscle, and manners are still immature. Keep activity steady and low-impact.
Height often slows before adult mass. Chest, coat, muscle, and body condition may continue changing even if the dog looks nearly adult.
Many Great Pyrenees settle toward adult weight during this window, though individual lines, sex, activity, and health still create a wide range.
Key takeaway
A Great Pyrenees should mature into size, balance, and strength without extra weight that makes movement, joints, heat tolerance, or recovery harder.
Growth check
A healthy Great Pyrenees trend is steady, mobile, and substantial under the coat. Use these checks alongside the chart and your veterinarian's advice.
Owner check
The white double coat can hide both gain and loss. Grooming is the best time to check ribs, waist, skin, muscle, hips, shoulders, and any sore spots.
Weight factors
Great Pyrenees weight changes with sex, frame, coat, growth speed, food, treats, guardian activity, joints, and health. Track those details with each weigh-in.
AKC lists males at 100 lb and up and females at 85 lb and up. A female should not be pushed toward a large male target if her body condition is already ideal.
The GPCA standard notes that the coat can mislead people who do not feel bone and muscle. Hands-on checks matter more than outline alone.
The breed should have enough bone and muscle to balance the frame, but too much weight can reduce easy movement and working soundness.
Veterinary nutrition guidance favors slow, monitored growth for large and giant puppies. Rapid gain is not the same as healthy development.
A working livestock guardian, rural companion, and suburban pet may have different activity patterns. Food should follow body condition and trend, not label averages alone.
Rapid gain, weight loss, limping, trouble rising, appetite change, vomiting, diarrhea, retching, or abdominal swelling should be discussed with a veterinarian.
Breed snapshot

Temperament profile
Great Pyrenees dogs are usually guardian and giant, and their larger frame is easiest to read when meals, activity, and weigh-ins stay steady.
Daily rhythm
Use calm consistency, leash manners, and slow growth support for a giant guardian breed.
Weight-tracking note
Coat can hide weight gain
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Open the homepage calculator with Great Pyrenees selected and compare the live result with this guide.
Open calculatorSize chart
Use the Giant size chart to compare the broader checkpoint range behind this breed guide.
Open size chartGuide
Review the core framework for trend tracking, body condition, and using ranges responsibly.
Open guideRelated guides
Age guide
Compare Great Pyrenees checkpoints with month-by-month puppy growth context before reading the breed graph.
Open age guideCondition
Use rib, waist, and tuck checks to decide whether Great Pyrenees's number looks healthy in real life.
Open condition guideLarge growth
Use slow-growth context for Great Pyrenees's frame, food routine, and exercise plan.
Open large guideMaturity
Compare Giant growth timing with the point when height, muscle, and fill-out usually slow.
Open timing guideGrowth
Growth graph
Great Pyrenees puppies grow into giant livestock guardians, so this chart separates male and female reference lines and keeps the focus on slow development, coat-hidden condition, and easy movement.
Chart span
2-24 months
Breed-specific monthly view
Male at 24 months
73 kg
160.9 lb
Female at 24 months
54 kg
119 lb
Re-check cadence
2-4 weeks
Trend beats one weigh-in
This breed-specific chart tracks the average monthly line for male and female Great Pyrenees puppies from 2-24 months. Use the line as a planning reference. A healthy Great Pyrenees trend still depends on ribs, waist, coat, bone, muscle, joints, appetite, stool, recovery, and veterinary exams.
Calculator bridge
Open the homepage calculator with Great Pyrenees selected, add the latest weigh-in, then compare the result back against this guide.
What this means
When to re-check
Re-check a Great Pyrenees every 2 to 4 weeks during growth, and sooner after food, coat, activity, appetite, or mobility changes.
Next action
Most useful after a fresh weigh-in, then compare the result back against this breed graph and the matching size chart.
Stages
These stages help owners understand why a Great Pyrenees can look giant before adult condition is finished.
8-12 weeks
Record starting weight, food brand, meal amount, stool quality, appetite, breeder or rescue notes, and early vet findings.
3-6 months
Use regular weigh-ins and measured meals. The puppy may look leggy, fluffy, and uneven while frame and coat change quickly.
6-9 months
The dog becomes very large but is still developing. Watch rising, footing, limping, stairs, play, and recovery.
9-12 months
Many Pyrs are close to adult height, but adult muscle, chest, coat, and steady condition are usually not finished.
12-18 months
Weight changes may slow but continue. Keep the dog lean enough to move easily, tolerate weather, and recover well.
18-24 months
Move from puppy-growth thinking to adult maintenance: measured portions, routine activity, body condition, grooming checks, and vet exams.
Feeding rules
Choose a complete and balanced puppy food formulated for large-size dogs unless your veterinarian gives different instructions.
Do not free-pour for a giant puppy. Measure portions, keep the food consistent, and adjust from weight and condition trends.
Pair every weigh-in with ribs, waist, coat, muscle, stool, appetite, joints, movement, and recovery notes.
Extra food should not be used to make a Great Pyrenees bigger faster. Slow, steady development is the safer target.
Slow transitions make stool, appetite, skin, coat, and weight easier to interpret. Sudden food changes can confuse the growth record.
Keep meals predictable, water available, and activity calmer around feeding. Ask your vet about bloat risk and prevention for your individual dog.
Feeding
The exact amount depends on calories per cup, age, sex, activity, working routine, body condition, health, and your veterinarian's plan.
Puppy
Use measured meals and a large or giant-breed puppy food. Re-check weight and body condition often enough to catch fast gain early.
Adolescent
A young Pyr may weigh more than many adult dogs while still developing. Keep rewards small, activity steady, and meals consistent.
Adult
Once adult weight settles, adjust portions around weather, coat season, guarding activity, walks, treats, and body condition.
Senior
Older Great Pyrenees may need portion changes as activity, muscle, and joint comfort change. Ask your veterinarian before major diet changes.
Treats
Treats should stay a small part of daily calories. Use small pieces and subtract frequent rewards from the daily food plan when needed.
Vet review
Bring weight history, food amount, calorie details, treat count, activity, stool notes, grooming findings, and body photos to your vet.
Daily life

Good fit for
Things to watch
Care
Use measured giant-breed meals and avoid pushing fast growth.
Favor steady walks, controlled play, and recovery over repetitive impact.
Feel through the coat for ribs, waist, skin, and muscle during brushing.
Build calm leash manners and handling habits with rewards counted.
Warning signs
Use this page for tracking, not diagnosis. Giant, deep-chested dogs need quick veterinary help when weight or appetite changes appear with mobility, digestive, or abdominal warning signs.
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Next step
Use live age and weight inputs, then compare the result with this breed guide and its matching size chart.
FAQ
The page combines official breed size information, parent-club structure language, health-screening context, bloat-aware owner guidance, veterinary nutrition principles, and search-intent review.
Estimates only. Not veterinary advice.