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Obesity

Painted illustration of obesity in a cat

What is it?

Obesity is one of the most common health problems in indoor cats. Extra fat increases the risk of diabetes, arthritis, urinary problems, and liver disease.

What signs should I watch for?

Signs to watch for include hard-to-feel ribs, rounded belly or sagging pouch, trouble grooming the lower back, and reduced activity.

How is it diagnosed and treated?

We assess weight and body condition score and create a plan with a precise daily food amount, often a weight-loss diet, and more activity through play or food puzzles.

Can it be prevented, and what's the outlook?

  • Cats must lose weight slowly.
  • A cat that stops eating can develop serious liver disease (hepatic lipidosis), so never fast an overweight cat.

Reviewed by the Adler Veterinary Hospital veterinary team, October 2026.

Indoor cats

Who's at risk:

Hard-to-feel ribs, rounded belly, trouble grooming, less activity

Main signs:

Ongoing management with your vet

Urgency:

When to call a vet right away

  • Your overweight cat stops eating
  • Your cat is eating much less than usual
  • Weight loss that is happening faster than your vet planned

Not sure whether it can wait? Call us anyway. Our team can help you decide.

Source:

Related conditions

Diabetes Mellitus

Diabetes

Hyperthyroidism

Hyperthyroidism

Inflammatory Bowel Disease and GI Lymphoma

IBD & GI Lymphoma

Next steps

Watch a related video

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