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Why is my dog drinking so much water and having accidents inside?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 9 years and 7 months old | 60 lbs

What are reasons my dog could be drinking too much water (twice normal amount) and peeing inside? He’s already been tested for cushings, diabetes, calcium issue, and had an ultrasound of his kidneys/urinating track.

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on August 6th, 2019

Thanks for using Petco Pet Education Center, formerly Petcoach! If they have checked for all these diseases, they have already done a very thorough work-up. I am assuming that they tested for diabetes mellitus but perhaps not for diabetes insipidus which is another condition that can result in increased drinking and would be another thing to test for. It is not tested for often as it is quite rare. That is typically the last thing to check. If he does not have diabetes insipidus then it may be behavioral in nature which is also possible that there is not a physiological reason or disease to explain and it is more of a behavioral issue. You can consider seeing an internal medicine specialist who can help you further in person. Best of luck!

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