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Why Is My Dog Drinking So Much Water?

June 18, 2021

If you feel that your dog drinks too much water and you want to know if that is something you have to worry about, keep reading!

Why is My Dog Thirsty? 

Dogs are usually considered messy and fast drinkers, which means determining their daily water intake is a little challenging. Puppies, lactating dogs, and exceptionally energetic ones drink more water than the rest. Your dog will also drink more water in hot weather, which is normal for all animals. Others simply drink more because it's a part of their diet. However, a dog drinking a lot of water can also be a sign of a health problem. 

Excessive Consumption of Water (Polydipsia):  

Polydipsia is a health condition that causes a dog to drink more water than it usually does. It is generally defined as drinking more than 100ml/kg of water in a 24hr period.

What does It Mean When an Old Dog Starts Drinking a Lot of Water? 

Excessive consumption of water or polydipsia which leads to a dog’s frequent urination can signal various medical conditions including but not limited to Cushing syndrome, diabetes, or kidney failure. 

If you notice that your dog is drinking excessively all of a sudden, it is better to consult a vet as soon as possible. 

Yorkshire Terrier beside the table

Causes of Excessive Drinking in Dogs 

Sometimes, excessive drinking indicates certain health problems. The major conditions that cause more water intake include diabetes, Cushing disease, and kidney failure. In female unspayed dogs, it can also be a symptom of pyometra (an infected uterus).

To ensure the utmost well-being of the dog, consulting a vet immediately is recommended for further investigation. The vet will likely run some tests to determine the cause of excessive drinking.


How to Keep an Eye for Your Dog's Water Intake

Monitoring your dog's water intake and noticing any sudden changes in its drinking behavior can be a helpful way of preventing a serious disease:

  • Develop a water bowl routine. Refill the bowl of your dog at the same time every day.

  • Fill the bowl up to the same level regularly.

  • Monitor the filled water level and how much is consumed daily. 

The normal maintenance fluid intake in dogs is 50ml/kg in a 24 hour period.


It is important to note that you are never supposed to deprive your dog of water. It is their basic necessity just like humans. 

However, do not ignore any changed behaviour, and avoid delaying a vet visit if you realise your dog is drinking a lot more water than usual. We should keep a good check on our dog's drinking behavior and once you notice anything abnormal like dog frequent urination or excessive thirst in dogs, consult your vet immediately. 

This article is endorsed by perrovets' vet, Dr James Blanshard

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