Is your dog or cat the right weight? Use the simple rib test to estimate their ideal weight and how much to lose or gain — the way vets actually assess it.
“Is 14 kg too much?” has no answer without knowing the dog — 14 kg is lean for a border collie and obese for a dachshund. That is why vets use a body condition score instead, a 1–9 scale based on what you can feel and see. At an ideal score of 5 you can feel the ribs easily without pressing, the waist is visible from above, and the belly tucks up from the side. This tool turns that score into an estimated ideal weight and a target.
It matters because pet obesity is now one of the most common health problems vets see, and it quietly shortens lives — extra weight strains joints and raises the risk of diabetes, especially in cats. The good news is that loss should be gentle: 1–2% of body weight per week. Cats in particular must never be crash-dieted, as rapid weight loss can cause a dangerous liver condition. Pair this with our food portion calculator to dial in daily amounts.
This tool gives general estimates only and is not veterinary advice. Always consult your vet about your individual pet. Full disclaimer.