My cat isn't eating but is still drinking water. Should I be worried?

Yes — it still warrants attention. If your cat has gone more than 24 hours eating nothing but drinking water, a vet visit is recommended to rule out any underlying illness.

How can I tell if my cat is just being picky or actually sick?

A picky cat still has energy, shows interest in treats or different foods, and seems like themselves. A sick cat often has no interest in any food whatsoever and seems noticeably "off." If your cat is refusing everything and their energy is low, illness is a real possibility.

Health & Symptoms

Cat Not Eating for Over a Day: Causes and What to Do

Intermediate✍️ Axialogic Team📅 Updated: 2026-03-08

⚠️ This article is intended as general guidance only and is not a substitute for professional veterinary advice. If your pet is showing signs of an emergency, go to your nearest vet right away — don't rely on online information when time matters.

Urgency level: See a vet soon

Monitor

Watch closely

See vet soon

Emergency

⚠️ See a vet immediately if you notice

• No food eaten at all for more than 24 hours
• Vomiting or diarrhea at the same time
• Noticeable weight loss
• Jaundice (yellowing of the ears or gums)
• Extreme lethargy

✅ These can be monitored at home

• Being picky about a specific food but still eating other things
• Brief adjustment after a move or household change, while still drinking water

Table of Contents

Why a Cat That Stops Eating Is Especially Concerning
Common Causes
Things You Can Try First

Why a Cat That Stops Eating Is Especially Concerning

Unlike dogs, cats that go without food for an extended period are at risk of developing hepatic lipidosis (fatty liver disease) — a serious and potentially life-threatening condition. When a cat stops eating for 24–48 hours, the body begins breaking down fat for energy, and the flood of fat into the liver can cause it to fail.

This is why a cat refusing to eat is more urgent than a dog in the same situation.

Common Causes

Physical illness: Dental problems, gastrointestinal issues, kidney disease, infections
Stress: Moving house, a new pet or person in the home, environmental changes
Food-related issues: Sudden brand change, food that's gone off, a dirty food bowl
Medication side effects
Pain: Discomfort anywhere in the body can suppress appetite

Things You Can Try First

Warm the food slightly to make it more aromatic and appealing
Try a different flavor or texture
Make sure the bowl is clean and in a quiet, low-traffic area
If there's been a recent move or change at home, give your cat a calm, quiet space to decompress

Frequently Asked Questions

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A sudden increase in your cat's water intake (polydipsia and polyuria) can be an early indicator of serious conditions like chronic kidney disease, diabetes, or hyperthyroidism. Early detection is key.

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