Labrador puppies grow remarkably fast — doubling their birth weight within the first week, and reaching roughly half their adult size by 4 months. Knowing what to expect at each milestone helps you spot if growth is significantly off track, and calibrate feeding and exercise appropriately.
These are population averages — individual variation is normal and expected. A Lab who tracks consistently in their own curve matters more than hitting a specific weight at a specific age.
Labrador puppy weight by age: typical ranges
| Age | Male weight | Female weight |
|---|---|---|
| 8 weeks | 7–9kg | 6–8kg |
| 3 months | 12–14kg | 10–13kg |
| 4 months | 16–19kg | 14–17kg |
| 5 months | 19–23kg | 17–21kg |
| 6 months | 22–27kg | 19–24kg |
| 9 months | 26–31kg | 22–28kg |
| 12 months | 27–34kg | 23–30kg |
| Adult (18–24 months) | 29–36kg | 25–32kg |
Show-line Labs tend toward the higher end of these ranges; field-line Labs often track at the lower end. Both are healthy. What matters is the trend — steady, consistent growth — not a specific number.
The body condition check: more reliable than the scale
Weight alone doesn’t tell you whether your puppy is growing well — body condition does. At any age, your Lab puppy should have:
- Ribs palpable with light pressure but not visibly prominent
- A slight waist visible from above
- A slight belly tuck from the side
A puppy who weighs “the right amount” on a chart but has no palpable ribs is overweight. One who’s slightly light for their age but has perfect body condition is probably fine. Check condition fortnightly at minimum during the growth phase.
Growth rate: what’s normal
Labs grow fastest between 2 and 4 months — weight gain of 1–2kg per week is normal in this window. Growth slows through 5–7 months and becomes much more gradual from around 9 months onward. Height (skeletal length) is mostly complete by 9–12 months; muscle and bulk continue developing to 18–24 months.
Sudden drops in growth rate, failure to gain weight over two weeks despite normal eating, or significant deviation from the expected curve all warrant a vet conversation.
My take: weigh regularly, but trust the body check more
I’d weigh a Lab puppy monthly during the first year — most vets will do this for free between appointments. But the number on the scale is context for the body condition check, not a replacement for it. A Lab who’s sitting at the lower end of average but is in excellent condition is not underweight. One at the upper end with no palpable ribs needs feeding adjusted regardless of what the chart says.
People also ask about Lab puppy growth
How much does a Labrador puppy grow each week?
During the fastest growth phase (2–4 months), approximately 1–2kg per week. This slows to roughly 0.5–1kg per week from 4–6 months, and less than 0.5kg per week from 6 months onward. By 9 months most of the growth is complete and changes week to week may be minimal.
Is my Lab puppy too small?
If they’re growing consistently along their own curve, eating well, and have good body condition, being at the lighter end of average is usually fine — particularly for field-line Labs who naturally run lean. If growth has stalled, appetite has changed, or you’re concerned, a vet check is worthwhile to rule out parasites, nutritional issues, or underlying health conditions.
When do Labrador puppies have a growth spurt?
The most dramatic growth spurt is between 2 and 4 months. There are often secondary periods of faster growth around 5–6 months. These coincide with increased appetite — a puppy who’s suddenly eating everything in sight and acting hungrier than usual may simply be in a growth phase. Check body condition and adjust feeding by 10–15% if appropriate.
“, “rendered”: ”Labrador puppies grow remarkably fast — doubling their birth weight within the first week, and reaching roughly half their adult size by 4 months. Knowing what to expect at each milestone helps you spot if growth is significantly off track, and calibrate feeding and exercise appropriately.
These are population averages — individual variation is normal and expected. A Lab who tracks consistently in their own curve matters more than hitting a specific weight at a specific age.
Labrador puppy weight by age: typical ranges
| Age | Male weight | Female weight |
|---|---|---|
| 8 weeks | 7–9kg | 6–8kg |
| 3 months | 12–14kg | 10–13kg |
| 4 months | 16–19kg | 14–17kg |
| 5 months | 19–23kg | 17–21kg |
| 6 months | 22–27kg | 19–24kg |
| 9 months | 26–31kg | 22–28kg |
| 12 months | 27–34kg | 23–30kg |
| Adult (18–24 months) | 29–36kg | 25–32kg |
Show-line Labs tend toward the higher end of these ranges; field-line Labs often track at the lower end. Both are healthy. What matters is the trend — steady, consistent growth — not a specific number.
The body condition check: more reliable than the scale
Weight alone doesn’t tell you whether your puppy is growing well — body condition does. At any age, your Lab puppy should have:
- Ribs palpable with light pressure but not visibly prominent
- A slight waist visible from above
- A slight belly tuck from the side
A puppy who weighs “the right amount” on a chart but has no palpable ribs is overweight. One who’s slightly light for their age but has perfect body condition is probably fine. Check condition fortnightly at minimum during the growth phase.
Growth rate: what’s normal
Labs grow fastest between 2 and 4 months — weight gain of 1–2kg per week is normal in this window. Growth slows through 5–7 months and becomes much more gradual from around 9 months onward. Height (skeletal length) is mostly complete by 9–12 months; muscle and bulk continue developing to 18–24 months.
Sudden drops in growth rate, failure to gain weight over two weeks despite normal eating, or significant deviation from the expected curve all warrant a vet conversation.
My take: weigh regularly, but trust the body check more
I’d weigh a Lab puppy monthly during the first year — most vets will do this for free between appointments. But the number on the scale is context for the body condition check, not a replacement for it. A Lab who’s sitting at the lower end of average but is in excellent condition is not underweight. One at the upper end with no palpable ribs needs feeding adjusted regardless of what the chart says.
People also ask about Lab puppy growth
How much does a Labrador puppy grow each week?
During the fastest growth phase (2–4 months), approximately 1–2kg per week. This slows to roughly 0.5–1kg per week from 4–6 months, and less than 0.5kg per week from 6 months onward. By 9 months most of the growth is complete and changes week to week may be minimal.
Is my Lab puppy too small?
If they’re growing consistently along their own curve, eating well, and have good body condition, being at the lighter end of average is usually fine — particularly for field-line Labs who naturally run lean. If growth has stalled, appetite has changed, or you’re concerned, a vet check is worthwhile to rule out parasites, nutritional issues, or underlying health conditions.
When do Labrador puppies have a growth spurt?
The most dramatic growth spurt is between 2 and 4 months. There are often secondary periods of faster growth around 5–6 months. These coincide with increased appetite — a puppy who’s suddenly eating everything in sight and acting hungrier than usual may simply be in a growth phase. Check body condition and adjust feeding by 10–15% if appropriate.
Use this chart alongside our Labrador weight guide to check your dog is on track. Feeding and growth are closely linked — our Labrador puppy feeding schedule shows the right portions at each stage. For where all this puppy growth leads, see our guide to adult Labrador size.
My Take on Labrador Puppy Growth Chart
Weight charts give a useful benchmark, but I’d encourage owners to weight their puppies regularly and focus on body condition more than the chart number. Labs are a breed where being a few kilos over ‘expected’ weight at 4 months doesn’t tell you much on its own — but a puppy you can’t feel ribs on easily needs a diet adjustment regardless of what the chart says. The chart is a starting point; the dog in front of you is the measurement.
FAQ
How fast should a Labrador puppy grow?
Labs grow quickly in the first 6 months and then more gradually toward adult size. A rough guide: most Labs reach about half their adult weight by around 4 months. Sudden drops in growth rate or very rapid weight gain are both worth a vet conversation.
When does a Labrador puppy reach full adult weight?
Most Labs reach their adult weight somewhere between 12 and 18 months, though some continue to fill out in muscle and substance up to 2 years. Show-line dogs typically take longer to fully develop than working-line dogs.
What if my Lab puppy is smaller than the growth chart predicts?
Individual variation is significant — puppies from smaller parents, or runts of the litter, often track below average charts and turn out completely healthy. If the puppy is active, eating well, and gaining steadily, being below chart averages usually isn’t a concern. Your vet is the right person to assess growth at each vaccination appointment.