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Why is my dog barely eating, drinking lots, and losing weight?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed

My dog eats very little, but drinks a lot of water, but she's active and seems nothing to worry base on her behavior, its been weeks since. But because of this, she lose her weight . What happened? What to do ?

1 Answer

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on December 24th, 2018

Poor Jujay! If she's not eating much and losing weight, this isn't normal - even if she's not having any other obvious symptoms of illness. There are many different things that could cause these symptoms, so it's hard to say what might be wrong without being able to examine her and run some tests. Some common possibilities would include chronic liver or kidney disease, a chronic GI problem of some kind, or even some type of cancer. I would recommend taking her to the vet for an exam as soon as you are able to. He/she can do blood work and x-rays if needed to help diagnose the problem and get her started on appropriate treatment depending on what is found.

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