Why Is My Cat Drinking So Much Water? Causes & Tracking Guide

If your cat is drinking more water than usual, it may be trying to tell you something important. Increased thirst—also known as excessive drinking or polydipsia—can be a sign of anything from simple dehydration to serious medical issues. Identifying the pattern early is essential, and Felper helps you monitor every change through health logs, reminders, and user-initiated recordings.

Common Reasons Cats Drink Excessive Water

While some fluctuations in drinking habits are normal, a noticeable or sudden increase often has an underlying cause. Here are the most common reasons:

• Kidney disease — One of the most frequent causes of increased thirst in adult and senior cats.
• Diabetes — Excessive drinking paired with increased urination and appetite changes.
• Hyperthyroidism — Can cause restlessness, weight loss, and higher water consumption.
• Urinary tract infections — May lead to discomfort, frequent bathroom trips, and increased drinking.
• Dehydration — From heat, stress, reduced food intake, or recent vomiting/diarrhea.
• Diet changes — Some dry foods lead to higher thirst compared to wet diets.

How to Monitor Your Cat’s Water Intake with Felper

Tracking behaviors consistently gives you and your vet a clearer picture of what’s going on. Felper makes this easier by helping you:

• Log changes in thirst — Note when your cat seems to be drinking more than usual.
• Record short videos or photos — Provide visual context, like drinking frequency or urgency.
• Set reminders — Maintain consistent check-ins so you don’t miss gradual changes.
• Track related symptoms — Appetite, litter box habits, weight, and behavior.

Your entries help Felper highlight patterns and give clearer insights into whether something seems unusual.

How Video and Audio Recordings Help Explain Sudden Thirst

Sometimes, context matters more than the thirst itself. A quick recording—taken when you point your device at your cat—can help capture behaviors like rapid drinking, frequent trips to the water bowl, or signs of discomfort. Felper stores these alongside your logs so you can reference them later or share them with your veterinarian.

When Excessive Thirst Means It's Time for the Vet

If your cat’s drinking habits change suddenly or are accompanied by other symptoms such as weight loss, vomiting, increased urination, or lethargy, you should consult your vet. Bring your Felper logs and recordings—these help paint a more complete picture of when the changes began and how your cat behaved.

The Bottom Line

Sudden increases in water intake shouldn’t be ignored. Felper helps you catch subtle changes early by giving you an easy way to track drinking habits, add visual context, and receive reminders before patterns slip through the cracks. Early awareness brings better outcomes—and gives your cat the care it deserves.