PetGrit

Dog & Cat Ideal Weight Checker

Is your pet overweight? Don’t guess from the number on the scale — body condition matters more than weight alone. Rate your dog or cat on the vet’s 9-point Body Condition Score (we’ll walk you through the rib-and-waist check), and we’ll estimate their ideal weight and how far off they are.

Pet

Feel for the ribs and look for a waist from above — that tells you more than the scale.

Estimated ideal weight

— lb

How to use it

  1. 1 Pick dog or cat and enter their current weight.
  2. 2 Do the quick body-condition check — feel for ribs and look for a waist — and pick the matching score.
  3. 3 Read the estimated ideal weight and how much to gently lose or gain.

Why this matters

More than half of dogs and cats are overweight, and excess weight quietly shortens lifespan and worsens joints, diabetes risk, and breathing. The scale alone can’t tell you what’s healthy for an individual — a lean greyhound and a chunky pug of the same weight are worlds apart. Body Condition Score (BCS) fixes that: each point above the ideal 4–5 out of 9 represents roughly 10% of body weight, which is how vets estimate a target weight.

Frequently asked questions

How do I know if my dog or cat is overweight?

Run your hands over the ribs — you should feel them easily under a thin layer of fat, like the back of your hand. From above, look for a waist behind the ribs; from the side, the belly should tuck up. No ribs, no waist, and a sagging belly point to overweight (BCS 6–9 of 9).

What is a Body Condition Score?

It’s a standardised 1-to-9 (or 1-to-5) scale vets use to judge body fat, where 4–5 of 9 is ideal. Each point above 5 is about 10% over ideal weight, so a dog at BCS 7 is roughly 20% overweight.

How fast should a pet lose weight?

Slowly and with a vet’s plan — generally about 1–2% of body weight per week. Crash diets are dangerous, especially for cats, who can develop fatty liver disease if they lose weight too fast. Use this estimate as a starting point and let your vet set the target and pace.

Keep going

Dog & Cat Feeding Calculator Daily calories and cups, from the vet-standard RER/MER formula. Dog & Cat Water Intake Calculator Daily water target in cups, ounces, and ml — from your pet’s weight. Dog & Cat Age Calculator Pet years to human years — the real curve, not the ×7 myth.