How Can I Tell If My Pet Is Overweight?
Vets judge obesity by body condition score — a hands-on rib, waist and belly check — not by the number on the scale alone.
A weight alone says little, because healthy sizes span a wide range even within a single breed. Veterinary medicine therefore relies on body condition scoring (BCS): rating what you can see and feel — rib coverage, waist definition from above, belly line from the side — on a scale that commonly runs from one to nine, with the middle representing ideal condition.
The three-point home check: ribs, waist, tummy
Run flat palms along the chest: ribs should be easy to feel under a thin fat layer, roughly like the bones on the back of your hand — if you have to press hard, fat has built up. From above, look for an hourglass narrowing behind the ribs; from the side, the belly should rise toward the hips rather than hang level. Coat length and frame differ between breeds and individuals, so the feel test outranks the eye test, and a cat’s swinging belly pouch can be a normal skin structure rather than fat.
If the home check points to excess weight, resist the urge to simply pour less food: abrupt cuts risk nutrient shortfalls, and in cats crash dieting can trigger serious liver trouble. Book a veterinary visit instead — the clinic will confirm the score, rule out conditions that mimic weight gain, and set a safe weekly loss target with a diet plan matched to the animal in front of them.
MediIndex articles are for general information only and are not medical advice, diagnosis, or advertising. Outcomes vary by individual — consult a board-certified specialist for personal decisions.