Knowing whether your dog is at a healthy weight is one of the most important things you can do as a dog owner. Overweight dogs are at significantly higher risk of joint problems, diabetes, heart disease, and shorter lifespan. Yet surveys consistently show that owners underestimate their dog's weight — and that vets consider over half of dogs they see to be overweight.
Why Weight Matters More Than You Think
A 2019 study from the University of Liverpool found that dogs maintained at an ideal body weight lived 1.8 years longer on average than overweight dogs. For medium breeds with a typical 12-year lifespan, that's 15% more life. Weight isn't a cosmetic issue.
Average Healthy Weights by Breed
These are typical adult ranges from breed standards. Individual dogs vary — a well-muscled Border Collie may weigh more than average while still being lean. Use these as a starting reference, not a hard target.
| Breed | Male (kg) | Female (kg) |
|---|---|---|
| Labrador Retriever | 29–36 | 25–32 |
| Golden Retriever | 29–34 | 25–29 |
| German Shepherd | 30–40 | 22–32 |
| Border Collie | 14–20 | 12–19 |
| Cockapoo | 9–11 | 8–10 |
| Cocker Spaniel | 12–16 | 11–14 |
| French Bulldog | 11–14 | 9–12 |
| Dachshund (standard) | 7–15 | 7–15 |
| Beagle | 10–12 | 9–11 |
| Yorkshire Terrier | 2–3.2 | 2–3.2 |
| Poodle (standard) | 20–32 | 18–27 |
| Staffordshire Bull Terrier | 13–17 | 11–15 |
| Boxer | 27–32 | 25–29 |
| Rottweiler | 50–60 | 35–48 |
| Chihuahua | 1.5–3 | 1.5–3 |
Sources: AKC breed standards; Kennel Club breed standards. Ranges reflect breed standard adult weights, not population averages.
How to Check at Home: Body Condition Score
Weight alone isn't enough — a lean, muscular dog may weigh the same as a fat one. The Body Condition Score (BCS) is what vets use and you can do it at home in 30 seconds.
The Rib Test
Place both hands on your dog's ribcage and run your fingers along the ribs without pressing. You should be able to feel individual ribs easily, with a thin layer of fat over them — like feeling the back of your hand. If you have to press firmly to find the ribs, your dog is overweight. If the ribs are prominent and sharp, your dog may be underweight.
The Waist Check
Look at your dog from above. You should see a visible waist — an hourglass shape between the ribcage and hips. No visible waist (or a barrel shape) = overweight. Extreme tuck or prominent hip bones = underweight.
The Tuck Check
From the side, look at the belly. There should be a gentle upward tuck from the bottom of the ribcage toward the hind legs. A belly that hangs level with or below the ribcage is a sign of excess weight.
Weight by Age (Puppies)
Puppy weight targets vary enormously by breed. A Labrador puppy at 8 weeks weighs around 5–7 kg; a Chihuahua at 8 weeks weighs under 1 kg. General size-class growth curves:
- Small breeds (<10 kg adult): Reach adult weight by 10–12 months.
- Medium breeds (10–25 kg adult): Reach adult weight by 12–15 months.
- Large breeds (25–45 kg adult): Reach adult weight by 18–24 months.
- Giant breeds (>45 kg adult): May not finish growing until 2–3 years old.
What to Do If Your Dog Is Overweight
- Get a baseline weight. Weigh your dog at home or at the vet. Record it.
- Talk to your vet. Some weight gain has medical causes (thyroid problems, Cushing's disease). Rule these out first.
- Reduce caloric intake by 10–20%. Don't cut food dramatically — gradual reduction is more sustainable.
- Track treats. Treats can account for 30–50% of a dog's daily calorie intake without owners realising.
- Increase activity gradually. Don't suddenly double exercise — injured joints from sudden overexertion are a common setback.
- Weigh monthly. Trend matters more than any single reading.
Track Weight Trends in Woofio
Woofio's weight tracker logs each entry against your dog's breed ideal range, shows a trend chart over time, and alerts you when the trend is moving in the wrong direction. It's the difference between reacting to a problem and catching it early.