Cat Health & Symptoms: Is My Cat Sick?

Reviewed by Dr Georgina Ushi Phillips, DVM (AVMA, FVMA) · Updated June 2026

When something seems off with your cat, you want a calm, trustworthy answer, not ten scary ones. We explain common cat health symptoms in plain English, what you can watch at home, how to care for senior and seriously ill cats with compassion, and the clear signs it’s time to call your vet.

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Reviewed by licensed vets

10+ years hands-on animal-welfare experience

Calm, plain-English answers

 Every page shows its review date

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Something’s off with your cat – let’s figure it out calmly

When a cat hides, stops eating, or makes a noise you’ve never heard before, the worry hits fast (and a quick search usually makes it worse). Half the results are terrifying, the other half are written by people who’ve never examined a cat.

This is the home for everything cat health on Better With Cats. We explain the symptoms owners worry about most in plain English, tell you what you can reasonably watch at home, and are clear about the signs that mean it’s time to call your vet, never to scare you, just so you can act with confidence.

Every guide here is reviewed by a licensed veterinarian and written by people with years of hands-on animal-welfare experience. This isn’t a substitute for examining your cat in person, it’s the trustworthy first read before you decide what to do next.

Why trust this over a random search?

Vet-reviewed, but never cold. As accurate as a clinic, as warm as a friend.
Reassurance first. The likely explanation up top; the “when to worry” detail underneath.
Honest about limits. We tell you plainly when it’s time to see a vet.
Compassion for the hardest moments. Senior care and end-of-life, handled gently.
Always dated. Every page shows when a vet last reviewed it.

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What’s worrying you about your cat’s health?

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Symptoms & “Is My Cat Sick?”

The common signs owners worry about and what they usually mean.

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Why Is My Cat So Small? | (8 Possible Explanations)
Why Is My Cat Thin At The Back End | (Thoroughly Explained)
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Digestive & Worms

Vomiting, tummy troubles and parasites – what helps and what doesn’t.

Cat Poop Color Chart – What Does Each Color Indicate?
The Most Effective Home Remedies For Cat Vomiting
4 Reasons Why Cat Keeps Pooping On Floor, With Solutions
Cat Vomit Looks Like Poop: Causes And Solutions
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Breathing & Eyes

Congested breathing, squints and that mysterious third eyelid, decoded.

Why Do My Cat’s Eyes Change Color? | (Answered & Explained)
3 Reasons For Cat Sneezing And Watery Eyes (With Solutions)
5 Reasons For Cat Third Eyelid Showing But No Other Symptoms
5 Reasons For Cat Coughing And Gagging
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Senior Cat Care

Helping an older cat stay comfortable, mobile and well-fed.

8 Best Litter Box For Older Cats
6 Best Cat Trees For Older Cats | (Reviews & Buyer’s Guide)
Why Do Cats Purr When They Are Dying – The Truth
Is It OK That My Kitten Keeps Eating My Older Cat’s Food?
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End-of-Life & Hard Decisions

Compassionate, vet-reviewed guidance for the hardest part of loving a cat.

Kidney Disease In Cats – When To Euthanize?
My Cat Is Dying – How Long Will It Take For A Cat To Die?
Should I Leave My Dying Cat Alone?
When To Euthanize A Cat With Feline Leukemia?
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Condition & Diet

When the right food is part of the treatment – kidney, urinary and weight.

8 Best Urinary Cat Foods (Non-Prescription Substitutes)
Best Cat Food For Smelly Poop | (10 Best Wet & Dry Foods)
7 Best Non-Prescription Food For Cats With Kidney Disease
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Popular cat health questions

Jump straight to the answer. Each guide leads with the likely explanation, then tells you exactly when it’s worth a vet visit.

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Our deepest, most-trusted explainers – many are among the longest reads on the site for a reason.

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First, the reassuring part

Most of the time, the thing you’ve noticed is minor or manageable and plenty of “symptoms” are just normal cat. Before you panic, here are the signs that genuinely warrant a call:

Not eating or drinking for more than a day, or a sudden, clear drop in energy
Labored or open-mouthed breathing, repeated vomiting, or straining in the litter box
Obvious pain, collapse, or a fast, marked change from your cat’s normal self
Marina Titova Cat Lover & Product Tester
Dr Irma Sharma, Veterinarian who reviews Better With Cats health content
Logan Mastrianna, founder of Better With Cats, with 10+ years of animal welfare experience
Dr Georgina Ushi Phillips, DVM, veterinary advisor who reviews Better With Cats health content

A knowledgeable friend, with a vet on speed dial

Better With Cats has been helping cat owners since 2020. Our guidance comes from Logan Mastrianna, with 10+ years of hands-on animal-welfare experience, and every health claim is checked by Dr Georgina Ushi Phillips, DVM – a member of the AVMA and FVMA.

That matters most with health, where the stakes are real and the internet is loudest. We pair clinical accuracy with genuine warmth — and we’re always honest about the moment it’s time to call your own vet.

Meet the team & see our editorial standards
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