Around half of pet dogs are overweight, and most of their owners do not think they are. That gap — between what owners see and what a vet sees — is the reason this skill matters.
Weight alone is nearly useless. A 30kg Labrador might be underweight, ideal or obese. Body condition is what tells you.
The three checks
Do this with your dog standing, in about thirty seconds.
1. Ribs
Run your hands along both sides of the ribcage with flat palms, using light pressure.
You should feel each rib easily, with a thin layer of fat over them — like running your hand over the back of your own hand with the fingers spread.
- Ribs visible and sharp, no fat covering: too thin
- Ribs easily felt with a thin covering: ideal
- You have to press to find them: overweight
- You cannot find them: obese
2. Waist from above
Stand over your dog and look down.
There should be a clear inward curve behind the ribcage, an hourglass shape.
- A pronounced narrowing with visible hip bones: too thin
- A visible waist: ideal
- Straight sides, back and ribcage the same width: overweight
- Bulging outward: obese
3. Abdominal tuck from the side
Look at your dog from the side, at their level.
The belly should slope upwards from the ribcage towards the hind legs.
- A severe tuck with prominent hips: too thin
- A clear tuck: ideal
- Belly roughly level with the ribcage: overweight
- Belly sagging below the ribcage: obese
The nine-point scale
Most vets use a 1 to 9 system:
- 1–3: underweight
- 4–5: ideal
- 6: slightly overweight
- 7: overweight
- 8–9: obese
A score of 7 means roughly 20 percent above ideal weight. A score of 9 can mean 40 percent or more.
Why owners get it wrong
Several reasons, and they are consistent:
Drift. Weight gain happens slowly. You see your dog every day and never notice the change.
Comparison. If most dogs at the park are overweight, an overweight dog looks normal.
Coat. Long and thick coats conceal body shape entirely. You must use your hands, not your eyes.
Emotional framing. “Well covered”, “solid”, “big boned”, “a good eater”. Nobody wants to describe their dog as fat.
The photo trick helps. Take one from directly above and one from the side, and score the photograph rather than the dog in front of you. It is noticeably more honest.
Breed-specific caveats
Some breeds do not fit the standard assessment:
- Sighthounds — Greyhounds, Whippets, Salukis — are naturally lean, with visible ribs and hip bones at an ideal weight. A Greyhound scored as a Labrador would be judged underweight
- Bulldogs, Pugs and other brachycephalics have body shapes that make waist assessment difficult. Rely on the rib test
- Heavily coated breeds must be assessed by hand
- Very muscular breeds — Staffies, Bull Terriers — can feel solid without being fat. Ribs are still the test
Why it matters so much
The Labrador lifetime study is the clearest evidence available. Littermates were fed either freely or 25 percent less, for life.
The lean group:
- Lived roughly two years longer on average
- Developed osteoarthritis later and less severely
- Required treatment for chronic disease later
Two years, from portion control.
Obesity in dogs is also associated with diabetes, some cancers, heart and respiratory disease, higher anaesthetic risk, heat intolerance, reduced mobility, and reduced quality of life.
If your dog is overweight
- Rule out medical causes — hypothyroidism and Cushing’s both cause weight gain and neither responds to eating less
- Get a target weight from your vet
- Calculate calories on the target weight, not the current weight
- Weigh the food. Measuring cups produce errors of up to 80 percent
- Count treats within the daily total, keeping them under ten percent
- Aim for one to two percent body weight loss per week. Faster costs muscle
- Add low-calorie bulk — green beans, courgette, plain tinned pumpkin
- Use a slow feeder so the smaller meal lasts longer
Some links on this page are affiliate links. If you buy through them we may earn a small commission at no extra cost to you — it helps keep this site free. We only recommend products we would use with our own dogs.
Outward Hound Fun Feeder Slo Bowl
A maze bowl that stretches a reduced portion from thirty seconds to ten minutes. On a weight-loss plan this matters more than it sounds — satisfaction is as much about duration as volume.
KONG Wobbler Treat Dispenser
Dispenses a meal gradually as the dog works at it. Uses food you have already counted, so the enrichment costs nothing in calories.
- Weigh monthly. Most practices let you use the waiting-room scales for free
- Get the household on side. Weight-loss plans fail because someone is feeding the dog
If your dog is underweight
Less common but worth taking seriously. Rule out parasites, dental pain, digestive disease, kidney disease, diabetes and cancer before simply feeding more.
Unexplained weight loss, particularly in an older dog, is never just age.
Do it monthly
Score your dog on the first of every month, and write it down. It takes thirty seconds and it is the single most useful thing you can track.
Catching a one-kilo gain is trivial. Catching a five-kilo gain two years later takes four months of dieting and a good deal of arguing with the rest of the household.
