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Question:

Can a cat drink too much water?

I’m feeling really worried and could use some advice. My little furball, Whiskers, has suddenly started drinking what seems like a ton of water, way more than usual. It’s been going on for the past few days, and I can’t figure out what’s changed. She used to just take a few sips here and there, but now it’s like she can’t get enough. I’m concerned something might be wrong because I’ve heard excessive drinking can be a sign of health issues. Has anyone else experienced this with their cat? Did it turn out to be something serious? I’m debating whether I should rush to the vet or if I'm just overreacting. Would love to hear your thoughts or if anyone else has dealt with this.

Answer:

Hi there! It's great that you're tuned into your cat's drinking habits, as changes can sometimes signal something noteworthy. Cats usually drink about 2.5 to 4.5 ounces of water per 5 pounds of body weight daily. If you notice your cat drinking significantly more, it could be due to various reasons.



Increased thirst can sometimes be a reaction to hot weather or a switch to dry food. However, excessive drinking can also point to health issues like diabetes, kidney problems, or hyperthyroidism. Keep an eye on other signs like frequent urination, weight loss, changes in appetite, or lethargy, as these could indicate a more serious problem.



At home, ensure fresh water is always available, and measure how much your cat drinks over a day or two. This information can be really helpful if consulting with a vet. Watch for any behavioral changes or signs of distress.



If your cat shows some of these signs or if you're just unsure, it might be wise to have a professional check things out. A video consult with a vet can provide peace of mind and advice tailored specifically to your furry friend’s needs. Consider booking a session with Dial A Vet to discuss your concerns further.

Answered by

Louise - Senior Veterinary Nurse, Dial A Vet

June 23, 2025

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The "Ask a Vet" forum on Dial A Vet offers general information and helpful tips on pet health, but it's not a substitute for professional veterinary care. The advice here doesn't create a veterinarian-client-patient relationship, and our vets can't diagnose or treat your pet remotely. For emergencies or specific medical concerns, always contact your local veterinarian immediately. Your pet's health is unique, and decisions should only be made after consulting with a qualified professional. By using this forum, you acknowledge these limitations and agree to seek in-person veterinary advice for all your pet's health needs. View our content guidelines.
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