My cat is not eating — what should I do?

A cat that refuses food for more than 24–36 hours requires prompt attention. Unlike dogs, cats face a unique and serious risk when they stop eating: hepatic lipidosis, also known as fatty liver disease.

Why cats are different from dogs

When a cat does not eat, its body rapidly mobilises fat stores to fuel itself. However, cats' livers are not efficient at processing this sudden influx of fat. Within as little as 48–72 hours of anorexia, fat deposits can overwhelm the liver cells, leading to liver failure. This is especially risky in overweight cats.

Common reasons a cat may stop eating

- Stress or environmental change – Moving house, a new pet, a new family member, rearranged furniture, or a change in routine.
- Respiratory illness – Cats rely heavily on smell to trigger appetite. A blocked nose from an upper respiratory infection can make food seem unappetising.
- Dental pain – Mouth ulcers, tooth resorption, or gingivitis can make eating painful.
- Nausea – From kidney disease, pancreatitis, hairballs, or medication side effects.
- Food preferences – Cats can develop strong aversions to new foods, especially if they associate them with a period of illness.
- Pain elsewhere – Any source of significant pain suppresses appetite.

What you can do

Try warming the food slightly (to body temperature), offering a different texture (pâté vs. chunks), or adding a small amount of low-sodium tuna water as a flavour enhancer. Ensure the food bowl is clean and placed away from the litter tray.