3 Reasons Why Your Dog is Suddenly Drinking a Lot of Water

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Polydipsia is when a dog is drinking water excessively, and this could be a sign of a medial condition or could be harmless in nature. There are several reasons as to why your dog is suddenly drinking a lot of water and it’s important to figure out whether it’s medical or just enhanced play causing this issue.

1. Your Dog Could be Suffering from a Health Condition

Just like with people, there are medical conditions that could be resulting in your dog consuming larger-than-normal amounts of water. The most common health issues that cause excessive drinking in dogs is kidney disease or diabetes. If you have a female dog that hasn’t been spayed, they are more prone to uterine infections and a symptom of this infection is excessive thirst.

Hypercalcemia, which is a high blood calcium, also is a common medical condition causing your dog to drink a lot of water. Many other medical conditions could be causing your dog to drink more water, so it’s important to take them to the veterinarian to ensure no underlying issues are present.

2. Your Dog Has Been More Active than Usual

It would make perfect sense that a dog that is more active will need to drink more water. If it’s hot outside and in the middle of summer and your dog is running around the yard, obviously he will need to drink more water. Whether it’s hot outside or cold outside, if your dog is very active and getting more exercise they will tend to drink more water. It’s also important that if you take your dog out with you on walks or hikes, that you allow them to drink water regularly.

3. You Dog’s New Diet is Affecting His Drinking Needs

If your dog is drinking a lot of water it could be as simple as that his diet has altered the amount of water he needs to take in. It’s no surprise that if you are dry feeding more often, then your dog will need more water. Dry feeding results in most animals taking in more water than if you fed your dog only wet food. That is because wet food already has water within it, so your dog will not feel the need to drink actual water as much.

Another part to the diet is that you should avoid certain types of food ingredients that could cause excessive thirst. Your dog should be getting natural or healthy ingredients because preservatives are known to cause thirst. Sodium in particular is known to cause excessive thirst in dogs.

How Much Water Should a Dog Have in a Day?

There are several different factors when talking about how much water a dog should be drinking in a day. The most common calculation to determine adequate water intake is to take each pound of weight of your dog and multiple that by either .5 ounces or 1 ounce. Your dog should get somewhere within that range of .5 ounce per pound of body weight of water or 1 ounce of water per pound of body weight.

As mentioned, several other factors go into determining the amount of water your dog should take in per day. Puppies need water about every two hours and during these times, ½ cup should be given. You should also monitor puppies close to ensure they are getting enough water. Mature senior dogs self-monitor their own water intake naturally. The weather, any medications, and exercise routine are also contributing factors. The hotter the weather the more water consumption and some medications require more or less water as well.


  • Mikel Ince | 18/07/2021

    I have a nearly 9 yr old Lab, not been spayed, & never had Pups.
    Just before she comes on heat, she starts drinking a lot of water, & carries on whilst on heat drinking ex amount of water.

  • Bonnie | 06/09/2021

    My dog had a yeast infection but it’s gone. Her belly bloated I think and not eating but drinking lots of water. Vomiting clear liquid with little foam. I am scared of losing her. She’s 9 but an inside dog and pretty healthy.

  • Celia Dale | 16/11/2021

    My puppy is ten weeks old drinks a lot, never defecates inside but gets taken out very regularly wees but comes inside and a little later wees in the house we are at wits end as can’t let him out of our sight for a second

  • Elizabeth Scott | 17/04/2022

    I was given a fox hound/pit mixed, and he is 10 mos old, and around 32 lbs. very active, and hardheaded, he will sit, and lay down on command, and he only eats with a hand gesture! but must repeat each command several times before during, but pooped the first day and a half but hasn’t poop since (2 days) but eat, dry and wet together (3x day) like the prior owner stated, but do drink a lot of water, but no change in attitude or behavior, what’s the problem?

  • Kathleen Kendall | 02/07/2022

    My dog is 2 yo, she missed most of her bowel movements for 3 days. Doing a little but not even half of what was normal. Thought she might have a blockage because she also eats everything she can find on the floor. So I started her on 1 tsp flax, 1 tsp coconut oil and 1 tsp pumpkin. Next morning problem solved.
    Did this for 2 days then stopped but so did most of her bowel movements. Thought it might be because she had cleaned herself out but it continued one more day. Went back to the flax etc and things got better. Then she started drinking bowls of water. So much water that now I’m worried. Everything else is normal and she urinates the amount she drinks. Is the flax making her thirsty?

  • richard martin | 20/08/2022

    i have an 11 week old springer spaniel and she is always want water. She goes out often and pees but 15 minutes later will go again. You have to always pay attention, cannot relax much, or will be clening up pee.

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