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Cat Symptom Checker
Worried about your cat? A vet-reviewed answer in 30 seconds.

Omelo is a free cat symptom checker that catches the early signals cats hide by instinct. Trusted for 200,000+ health conversations. Free, no sign-up.

★★★★★Free, vet-reviewed answers in 30 seconds, any time
Prefer the app? Get Omelo free to try, it saves your cat's history and sends daily follow-ups.

Clinical reasoning reviewed by our licensed veterinary advisory team. Anchored in the MSD Veterinary Manual and AAFP feline triage guidelines. Not a substitute for a licensed veterinarian.

★★★★★4.8on Google Play

What is a cat symptom checker?

A cat symptom checker is a tool that asks about your cat's symptoms and tells you how urgent they are and what to do next. Omelo's free cat symptom checker routes each case through vet-authored decision pathways, flags red-flag emergencies, and gives a clear next step in about 30 seconds, personalized to your cat's age and history.

Clinical reasoning reviewed by Dr. Ashim Sarkar, veterinarian.

How the cat symptom checker works

You start with what you noticed first, even something as subtle as your cat hiding more or eating less. Omelo asks a few short follow-up questions, applies the clinical rules that are specific to cats, and returns an urgency level with what to do, what to watch for, and when to see a vet. It takes about a minute, with no sign-up or card.

Why cats need a different symptom checker

Cats hide illness by instinct, so subtle changes matter more than they would in a dog. The biggest one is appetite: a cat that has not eaten for 24 or more hours is at real risk of hepatic lipidosis, a serious feline liver condition, so not eating is always a vet-visit threshold for cats, never wait-and-see.

Common cat symptoms it covers

When is a cat symptom an emergency?

Go to a vet now for labored or open-mouth breathing, straining in the litter box with no urine (an emergency in male cats especially), collapse, suspected poisoning, or 24-plus hours without eating. For those, head straight to your nearest emergency or 24-hour animal hospital, do not wait for the checker. Omelo helps you decide when to go; it does not diagnose, treat, or prescribe.

Vet-reviewed cat condition guides

Once you know how urgent it is, these vet-reviewed guides go deeper on the specific problem, with the signs to watch, home care, and when a vet is needed:

Cat symptom checker FAQ

How do cats hide illness?

Cats hide illness by instinct, a survival trait from wild ancestors. Subtle changes like hiding more, low energy, missed grooming, or an appetite drop are often the only early signals. Omelo's triage is built to catch these patterns.

Why is the 24-hour rule important for cats?

A cat that does not eat for 24 or more hours can develop hepatic lipidosis, a serious liver condition specific to felines. That is why not eating is always treated as a vet-visit threshold for cats, never a wait-and-see.

Is the cat symptom checker really free?

Yes, with no sign-up and no card to start. Your free trial also includes the dog symptom checker, daily health logging, and a vaccination tracker. Omelo Plus is the paid subscription for depth like unlimited chat and full health history.

What if it is an emergency?

For open-mouth breathing, blood, sudden collapse, or a cat straining with no urine, go straight to your nearest 24-hour animal hospital. When the triage detects a red-urgency signal it tells you the same thing immediately. Omelo does not replace emergency care.