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Why is my dog lethargic, not eating, and drinking lots of water?

Updated On September 23rd, 2025

Pet's info: Dog | Pug | Male | unneutered | 2 years and 9 months old | 14 lbs

I have a 3 year old male pug, he won't eat, he does drink lots of water. He looks like he has lost weight overnight. He is still able to jump onto the couch, but he is lethargic. I've been giving him baby food by spoon in his mouth just to give him some nourishment and pedialyte.

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1 Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on March 16th, 2018

I am so sorry to hear about Joe. He is a cutie. I would recommend an exam by his vet as soon as possible with these symptoms. Increased thirst along with lethargy (+/- appetite changes) can be a sign of many different problems in dogs, including kidney and liver disease, diabetes, endocrine disorders, liver shunts, and more. The vet can do a good physical examination of him and will likely recommend bloodwork and urinalysis to help diagnose the cause of his symptoms which will guide the treatment. Best of luck to you and Joe!

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