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Cat health guide · 65 symptoms

Cat symptoms: what they mean and when to worry

Cats are experts at hiding illness. Find your cat’s symptom, understand the likely causes and see how urgent it is, with clear signs of when your cat needs a vet.

Go to a vet right away if your cat:

If any of these apply, call your vet or the nearest emergency clinic now.

10 guides

Digestive problems & poisoning

Vomiting, diarrhea, constipation, loss of appetite and things your cat shouldn’t have eaten. A cat that stops eating for more than a day needs a vet.

Cat Ate Something Toxic 1

Cat Ate Something Toxic

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Cat Constipation 1

Cat Constipation

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Tabby cat lying flat on a bed, looking tired and unwell

Cat Diarrhea

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Cat Diarrhea With Blood 3

Cat Diarrhea With Blood

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Cat Hiding And Not Eating 1

Cat Hiding And Not Eating

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Cat Not Eating 2

Cat Not Eating

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Cat Poisoning Symptoms 1

Cat Poisoning Symptoms

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Cat Vomiting 1

Cat Vomiting

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Cat Vomiting White Foam 1

Cat Vomiting White Foam

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Cat Vomiting Yellow 1

Cat Vomiting Yellow

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5 guides

Urinary problems & thirst

Peeing outside the litter box, blood in the urine, urinary blockage and changes in thirst. A male cat straining to pee is an emergency.

Not sure which symptom fits?

Describe what you’re seeing and Veterinary AI will help you judge how urgent it is and what to do next, any time of day.

This guide is for information only and doesn’t replace an exam by a veterinarian. If your cat seems seriously unwell, contact a vet or emergency clinic right away.