Cat is drinking a lot of water

My cat is drinking a lot of water

Cat is drinking a lot of water

My cat is drinking a lot of water

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Is your cat suddenly drinking a lot water? The reason could be as simple as extremely hot weather, or it could be a sign of something more serious. As a cat parent, being aware of your furkids’ usual routine will help you determine whether a visit to your local vet is warranted.

What would cause my cat to drink more water than usual?

Each cat requires a certain amount of water per kilogram of body weight for basic survival. A consistent increase in water intake is however not normal and is usually linked to a variety of illnesses. The most common of these are kidney disease, an issue with the thyroid and diabetes.

Useful information for your vet when your cat is drinking too much water

When your cat is drinking more water than usual, also take note of the following:

  • Are they urinating more than usual?
  • Is there difficulty in urination?
  • What other behavior is of concern? Perhaps diarrhea or vomiting?
  • How is their appetite?
  • How is their mood?

Additionally, when visiting your vet it might be useful to measure out the amount of water your cat is drinking on a daily basis. 

Illnesses causing cats to drink a lot water

Kidney stones in cats may cause kidney disease. Here you will notice that your cat is drinking a lot of water but is not urinating as often. Your vet will need to perform various laboratory and urinary tests in order to diagnose this condition. Treatment is supportive and usually in the form of a prescription diet. Kidney disease can be fatal, however, the earlier it is treated, the better the prognosis. When diagnosed early, cats with kidney disease can live full, normal lives.

Thyroid disease will cause your cat to drink a lot of water. You may also notice an increase in appetite along with vomiting and diarrhoea. Your vet will likely treat hyperthyroidism with prescription medication. Cats with thyroid problems, when diagnosed and treated early, can continue to have a good quality of life for a few years after the diagnosis.

When diabetes is the cause of increased water intake, you will also notice an increase in urination. Management of your cat’s diabetes will require a lot of commitment and may involve daily insulin injections.


When you notice your cat is drinking a lot more water than usual, and for a couple of days, taking your feline to the veterinarian is recommended. Early diagnosis of any illness is key to your feline’s health.

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