Puppy Growth Chart
Puppy Growth Chart
Enter your puppy's size group, age, and current weight to see if they're on track, predict their adult weight, and view expected weights at every growth milestone.
Select your puppy's breed size group to get started
How puppy growth varies by size
Not all puppies grow at the same rate. A Chihuahua reaches adult weight in about 10 months, while a Great Dane may not finish growing for two years. Understanding your puppy's size group is the single most important factor in predicting their growth trajectory.
Maturity timeline by breed size
| Size group | Adult weight | Full maturity | Fastest growth |
|---|---|---|---|
| Toy (< 10 lbs) | 5 – 10 lbs | 8 – 10 months | 8 – 16 weeks |
| Small (10 – 25 lbs) | 10 – 25 lbs | 10 – 12 months | 8 – 20 weeks |
| Medium (25 – 50 lbs) | 25 – 50 lbs | 12 – 15 months | 8 – 26 weeks |
| Large (50 – 90 lbs) | 50 – 90 lbs | 15 – 18 months | 8 – 32 weeks |
| Giant (90+ lbs) | 90 – 150+ lbs | 18 – 24 months | 8 – 40 weeks |
Based on WALTHAM growth curve research and veterinary growth studies.
Understanding the growth curve
Puppies don't grow in a straight line. Growth is fastest in the first few months, then gradually slows as the puppy approaches adult weight. The curve is steeper for small breeds (they reach a higher percentage of adult weight earlier) and more gradual for large and giant breeds.
The growth chart above uses breed-group-specific curves to calculate expected weight ranges at each age. Your puppy's actual position on the curve is then used to project their individual adult weight.
When to be concerned
A puppy consistently tracking below the expected range may be underfed, have parasites, or have an underlying health issue. A puppy significantly above the range may be overfed — and excess weight during growth puts dangerous stress on developing joints, especially in large and giant breeds. Rapid weight gain in large breed puppies is a known risk factor for developmental orthopedic disease.
Related tools
Puppy Weight Tracker
Log weekly weigh-ins and visualize growth trends over time.
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Adult Size Predictor
Predict your puppy's adult weight using breed-specific growth curves.
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Dog Age Calculator
Convert your puppy's age to human years with development milestones.
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Feeding Calculator
Calculate how much to feed your puppy based on age, weight, and activity level.
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Puppy growth chart FAQs
1How much should my puppy weigh at 8 weeks?
It depends entirely on breed size. A Toy breed puppy might weigh around 2 lbs at 8 weeks, a Medium breed around 8 lbs, and a Giant breed around 15 lbs. Use the growth chart above with your puppy's breed size group for an accurate expected range.
2When do puppies stop growing?
Small and Toy breeds typically reach adult weight by 10–12 months. Medium breeds finish growing around 12–15 months. Large breeds mature at 15–18 months, and Giant breeds may continue growing until 18–24 months or beyond. Larger dogs take longer because they have more growing to do.
3Is my puppy underweight or overweight?
This growth chart shows you an expected weight range for your puppy's age and size group. If your puppy falls below the range, they may be underweight — though some individuals are naturally smaller. If they're above, make sure you're not overfeeding. Either way, your vet can assess body condition at your next visit.
4How accurate are puppy growth charts?
Growth charts based on breed-specific curves are reasonably accurate for purebred dogs. They're less precise for mixed breeds or unusual crosses. The charts show averages — individual puppies within the same breed can vary by 10–20%. Results are most reliable after 8 weeks of age.
5Why does my puppy's growth seem to have slowed down?
This is completely normal. Puppies grow fastest in the first few months, then growth gradually tapers off as they approach maturity. The growth rate slows naturally around 60–70% of adult weight. A sudden stop in growth or weight loss, however, warrants a vet visit.
6Should I worry about growth plates?
Growth plates are areas of developing cartilage near the ends of long bones. They're softer than mature bone and vulnerable to injury during high-impact exercise. Avoid forced running, jumping from heights, or strenuous exercise on hard surfaces until growth plates close — typically around 12–18 months for most breeds, longer for giant breeds.
7Does neutering or spaying affect growth?
Research suggests that early spay/neuter (before 6–9 months) may slightly increase adult height because the hormones that close growth plates are removed. The effect is generally small. Discuss timing with your vet based on your breed and circumstances.
8How often should I weigh my puppy?
Weekly weigh-ins are ideal for the first 6 months, then every 2 weeks until maturity. Consistent tracking helps you spot growth stalls or sudden changes early. Use our free Weight Tracker tool to log and visualize your puppy's growth over time.