More than half of pet cats in surveys are overweight, indoor cats especially. Healthy weight depends heavily on breed and frame, so shape beats the scale.
Ideal weight
| Type | Typical healthy weight |
|---|---|
| Average domestic cat | 3.6–4.5 kg (8–10 lb) |
| Small breeds (e.g. Siamese) | 2.3–4.5 kg (5–10 lb) |
| Large breeds (e.g. Maine Coon) | 5.5–9 kg (12–20 lb) |
The belly-flap myth. That loose swinging pouch on a cat's lower belly is usually the primordial pouch — a normal feature that protects the belly and aids stretching. It is not a sign of being overweight, and most healthy cats have one. Judge weight by the ribs and waist, not the pouch.
How to tell if your pet is overweight
- Feel for the ribs. Lay both hands flat on the ribcage; you should feel ribs easily under a thin layer without pressing.
- Look from above. There should be a clear waist tucking in behind the ribs; a straight or bulging outline means no waist.
- Check the side profile. The belly should tuck up behind the ribcage rather than hang level.
What to do about it
- Weigh the food, don't scoop it. Eyeballing portions is the most common cause of overfeeding.
- Count treats as calories — keep them under 10% of daily intake; swap biscuits for carrot or green bean.
- Build up daily activity gradually, switching to low-impact options like swimming if joints are sore.
- Go slow with cats. Rapid weight loss can trigger dangerous fatty liver disease — always involve your vet.
- Reweigh monthly. Safe loss is about 1–2% of body weight per week; involve your vet for an overweight pet.
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Open the weight calculatorFrequently asked
How much should my cat weigh?
An average domestic cat is healthy around 3.6–4.5 kg (8–10 lb), but breed matters a lot.
Is my cat's hanging belly fat?
Usually not — it's the normal primordial pouch. Judge by feeling for ribs and a waist.
Is my cat overweight or just fluffy?
Feel through the coat: easy-to-find ribs and a slight waist mean fluff; buried ribs mean weight.