Last Updated: June 2026 | Fact-checked by: Senior canine nutritionist review process | Disclosure: No affiliate links. Independent editorial content. All information verified as of June 2026.
Most Lab puppies arrive home looking a little round. Within weeks, owners start wondering whether that roundness is healthy growth or early overfeeding. The difference matters. Overfeeding a Lab puppy in the first six months raises the risk of skeletal disorders and lifelong obesity, according to research published in the Journal of the American Veterinary Medical Association.
This Labrador puppy weight chart gives you clear, age-specific weight ranges in kilograms for both male and female puppies and tells you what to do when the numbers don’t look right.
The labrador puppy weight chart below is built from Kennel Club UK breed standard data and average growth figures reported in peer-reviewed veterinary literature. Use it as a reference range, not a hard rule individual Labs vary based on genetics, diet, and activity.
Weight by Age: Males and Females
Male vs Female Lab Growth Rates
Males Are Heavier at Every Stage
The male labrador weight chart runs 10–15% heavier than females from birth onwards. Male puppies also have longer growth spurts typically between 4 and 7 months, where weekly weight gains can feel sudden and dramatic.
Female lab growth rate levels off earlier. Females reach full height around 12–14 months; males often continue filling out until 24 months, even though their final size is smaller.
Why This Matters for Feeding
Don’t feed a female the same portions as a male of the same age. A 5-month-old male needs roughly 10–15% more daily calories than a female at the same stage. Same age on the calendar doesn’t mean the same energy demand.
Why Are Labradors Always Hungry? The Gene Explained
The POMC Gene Mutation in Labs
Food obsession in Labradors isn’t a personality flaw it’s genetic. A study published in Cell Metabolism (Raffan et al., Cambridge University) found a deletion in the POMC gene (pro-opiomelanocortin) that disrupts the brain’s fullness signal. Labs with this mutation don’t register satiety the way other dogs do.
Around 25% of pet Labradors carry at least one copy of this mutation. Among Labradors bred as assistance dogs, that figure rises to 66% because food drives make them easier to train with reward-based methods.
Labs with the POMC mutation weigh on average 1.9 kg more than those without it, per the same study.
What This Means Day-to-Day
Your Lab begging after a full meal isn’t misbehaving. Its brain genuinely hasn’t registered that it’s eaten enough. This is why dog obesity prevention in Labs can’t rely on the dog “telling you” when it’s full. Weighed portions and fixed meal times are the only reliable controls.
Labradors are not greedy by choice — their brain is hardwired to keep searching for food even after a full meal, which is exactly why Labradors are always hungry no matter how much you feed them.
How to Use Body Condition Score Not Just the Scale
The Problem With Weight Alone
Two Labs can weigh 28 kg at 12 months. One is lean and athletic; the other is carrying significant fat. The scale doesn’t tell you which is which.
Body condition score (BCS) is a 9-point assessment vets use to evaluate fat coverage regardless of absolute weight. The World Small Animal Veterinary Association (WSAVA) recommends a BCS of 4–5 out of 9 as ideal for Labrador retrievers.
5-Step Home BCS Check
Step 1: Look from above. A healthy puppy has a visible waist tuck behind the ribs.
Step 2: Run hands along the ribcage without pressing. You should feel each rib clearly like knuckles through a thin leather glove.
Step 3: View from the side. There should be a slight belly tuck upward, not a flat or sagging line.
Step 4: Check the tailhead. No thick fat pad should sit above it.
Step 5: Score it. 1–3 = underweight. 4–5 = ideal. 6–7 = overweight. 8–9 = obese.
A puppy scoring 6 or above before 6 months old needs an immediate feeding review.
Kibble Amounts for Lab Puppies: The Growth Velocity Framework
Why Flat Portion Guides Fall Short
Most feeding guides give one daily gram amount per age group. The problem: a puppy growing 20% faster than average needs different intake than one tracking perfectly on the labrador puppy weight chart. Flat guides don’t account for this.
The Petsprod Growth Velocity Matrix
This original framework ties kibble amounts to actual growth rate against chart targets not just age.
- Tier 1: On-Curve (within 10% of chart): Feed per manufacturer guidelines for current weight.
- Tier 2: Fast Grower (10–20% above chart): Cut kibble by 10%. Add two short walks daily. Fast early growth in Labs is linked to increased hip dysplasia risk (Leighton, 1997, JAVMA).
- Tier 3: Slow Grower (10–20% below chart): Rule out parasites first. If clear, increase kibble by 10% and reweigh weekly. Persistent underweight needs a vet visit.
These labrador puppy feeding guide grams apply to a standard 30% protein, medium-calorie dry kibble. High-calorie foods need smaller portions; raw diets need separate calculation.
Signs Your Lab Puppy Is Underweight or Overweight
Underweight Labrador Puppy Signs
- Ribs, spine, and hip bones visible without touching
- Dull or thinning coat
- Low energy relative to age and breed
- Pot-bellied look (often worms, not underfeeding — get a vet check)
- Tracking more than 15% below the labrador puppy weight chart
Overweight Signs
- Ribs not palpable without firm pressure. These signs build up slowly — most owners miss the early ones entirely until the weight is already a problem, and overfeeding a puppy is far more common in Labs than underfeeding.
- No visible waist tuck from above
- Heavy breathing on short walks
- Reluctance to play or run
- Waddling gait at trot
What to Do When the Numbers Are Off
This is the section most weight chart articles skip. Knowing your puppy is off-track means nothing without a clear next step.
If Your Puppy Is Overweight
Before vs After: Example scenario, a 5-month-old male Lab at 21 kg roughly 4 kg above the upper range on the labrador puppy weight chart for his age. The owner had been free-feeding. Within 8 weeks of switching to weighed, timed meals (no diet food, no vet prescription kibble), the puppy came down to 18.5 kg and his BCS improved from 7 to 5. The fix wasn’t complicated. It was just consistent.
Action steps:
- Weigh all food on kitchen scales
- Drop to two or three fixed meal times; remove the bowl between meals
- Cut treats to under 10% of daily calorie intake
- Reweigh every two weeks and adjust
If Your Puppy Is Underweight
- Rule out intestinal parasites with a vet faecal test
- Check food quality. Very cheap kibbles can be low in digestible protein
- Increase meal frequency before increasing portion size
- If no improvement within 3–4 weeks despite good food and no parasites, book a vet check to rule out malabsorption
Stop Guessing and Start Tracking puppy health
Owning a Lab means accepting one truth early: this dog will always act hungry, and it will gain weight faster than almost any other breed if you let it. The labrador puppy weight chart gives you the numbers. The body condition score gives you the feel. The Growth Velocity Matrix tells you what to adjust and when.
None of this is complicated. It just requires actually doing it weigh the food, check the ribs, and track the weight monthly. Labs that grow steadily and stay lean in puppyhood consistently have fewer joint problems and longer lives, according to the landmark Purina Life Span Study (Kealy et al.,), which followed 48 Labs over 14 years.
Next Steps:
Weigh your puppy today and find them on the chart above
Do the 5-step BCS check with your hands right now
