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Is my dog overweight?
The rib test takes five seconds
Rest your fingers flat on your dog's ribcage. VCA describes the comparison this way: at an ideal weight, the ribs feel like the knuckles of your hand when it rests flat on a table - easy to feel, with a slight covering. If they feel like the knuckles on the palm side of your hand - buried, needing pressure to find - that's an overweight dog. If the ribs stick out visibly with no fat layer at all, the dog is too thin, which is its own vet conversation.
Two scales, one idea
There are two recognized BCS systems for dogs: a 5-point scale and a 9-point scale, as VCA explains. The 9-point version is the one most vets use because it allows finer distinctions. A score of 5 means very different things on the two scales - ideal on the 9-point (5/9), but obese on the 5-point (5/5) - so always say the score as a fraction. The WSAVA publishes a standard 9-point chart with drawings of each score, which is the same chart many vet clinics print on their walls.
Look from above, then from the side
Two views finish the check. From above, an ideal dog has a visible waist behind the ribs - an hourglass narrowing, not a straight or bulging line. From the side, the belly tucks up behind the ribcage rather than hanging level with it. Thick-coated dogs can fake a good outline, which is why the hands-on rib test matters more than the eye test.
What the score tells you
Write it down and repeat
One score is a snapshot; the trend is the story. VCA recommends recording weight and BCS together each time you check - the weight tracker on this site keeps both on your device and prints for your vet. If the score says overweight, the next guide covers how feeding amounts actually get set.