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Labrador Puppy Weight Chart — Growth Month-by-Month

Track your Labrador puppy's weight from 8 weeks to adult. Males 65–80 lb, females 55–70 lb adult. Field lines leaner than show lines. Keep growth at the mid-percentile to minimize elbow and hip dysplasia risk.

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Expected at month 6
38-52 lb (avg 45)

Labrador Retriever growth chart

MonthExpected (lb)
01
14
29
316
425
535
645
755
860
965
1068
1170
1272

How to use the Labrador puppy weight chart

  1. Weigh weekly through 6 months — Critical growth phase for joint development.
  2. Pick gender + line — Males 10–15 % heavier; show lines 10–15 % heavier than field lines.
  3. Compare to breed percentile — Target 40th–60th percentile. Avoid top-percentile growth.
  4. Adjust food if needed — 10–15 % less if consistently over-percentile; professional nutrition consult for significant deviation.

Labrador growth curve by month

Labradors grow fastest between 2 and 6 months — expect roughly 2.5–3.5 lb per week during this peak. Growth slows through 9 months, then minor gains through 14 months. Males and females diverge noticeably starting around month 4.

AgeMale (lb)Female (lb)
8 weeks9–118–10
12 weeks18–2216–20
4 months28–3425–30
6 months45–5540–50
9 months55–6548–58
12 months65–7555–65
18 months68–8058–70
Adult (24+ mo)65–8055–70

Why targeting mid-percentile growth reduces hip and elbow dysplasia

Hip dysplasia (CHD) and elbow dysplasia (ED) are among the most common orthopedic problems in Labradors — 12–15 % of AKC-registered Labs are affected per OFA database data. While genetics sets the risk, growth rate during puppyhood substantially modifies severity. Puppies that grow at the top of the breed range develop more severe joint conformation abnormalities than genetically equivalent puppies grown at mid-range.

The mechanism: rapid growth outpaces joint cartilage maturation. The developing cartilage can't keep up with bone elongation, creating uneven surfaces and inadequate support. Feeding large-breed puppy formula with controlled calcium, not supplementing calcium or vitamin D, and maintaining lean body condition through growth are the three most impactful modifiable factors. A puppy at the 50th percentile with proper nutrition ends up at the same adult weight as a top-percentile fast-grown puppy — but with substantially better joint outcomes.

Frequently Asked Questions

How much should my Labrador puppy weigh at each age?

Male Labrador puppy weights: 8 weeks 9–11 lb; 12 weeks 18–22 lb; 16 weeks 28–34 lb; 6 months 45–55 lb; 9 months 55–65 lb; 12 months 65–75 lb. Females track 8–12 % lower at every age. Labs reach ~90 % of adult weight by 12 months, with final adult weight settling by 14–18 months. Adults: males 65–80 lb, females 55–70 lb.

My Labrador puppy is heavier than the chart — is that bad?

Usually yes. Overfed Lab puppies have substantially higher rates of elbow and hip dysplasia due to excessive growth rate. The Kealy 2002 Lifetime Study showed lean-fed Labs lived 1.8 years longer than ad-libitum littermates — an effect that begins during puppyhood. Target the 40th–60th percentile, not top. Reduce food 10–15 %, measure portions by weight, increase moderate exercise. Check with vet if your puppy is consistently above 90th percentile.

When do Labrador puppies stop growing?

Labs reach approximately 90 % of adult weight by 12 months and finish filling out muscle and chest depth by 14–18 months. Skeletal growth-plate closure occurs around 12–15 months (earlier than giant breeds). Switch to adult formula at 14–15 months — too early promotes incomplete growth; too late promotes adult obesity. Final adult weight typically settles by 18 months.

Are field-line Labrador puppies smaller than English / show-line?

Yes. Field-line (American working) Labs are leaner and slightly smaller — adults typically 55–70 lb with lighter bone. English / show-line Labs are heavier and stockier — adults typically 70–85 lb with heavier bone. Both fit the AKC breed standard range but sit at different points within it. If you know your puppy's line, adjust expectations: a 12-month field-line male at 60 lb is on target; a 12-month show-line male at 60 lb is below average.

Should Labrador puppies eat large-breed puppy food?

Yes, until 14 months. Large-breed puppy formulas (labeled specifically for large-breed growth) have controlled calcium (≤ 1.2 % DM, ideal 1.0 %), moderate fat (14–18 %), and appropriate calorie density to prevent the rapid growth that triggers orthopedic disease. Regular (all-life-stages or small-breed) puppy foods have higher calcium and fat — feeding them to a Lab puppy measurably increases dysplasia risk even if the puppy appears healthy during growth.

How often should I weigh my Labrador puppy?

Weekly through 6 months, then biweekly to 12 months, then monthly. Early growth is where you catch trend deviations — a puppy consistently above or below the breed percentile curve needs dietary adjustment. Use a kitchen scale for puppies under 15 lb, bathroom scale (weigh yourself + puppy, then yourself alone) for larger puppies.

Sources & References

  1. [1]
  2. [2]
    AKC Labrador Retriever Breed Profile — American Kennel Club
  3. [3]
  4. [4]
    Canine Hip Dysplasia — OFA Database — Orthopedic Foundation for Animals