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My dog lost a lot of weight, won't eat, and barely drinks. Why?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Female | 5 lbs

My dog was fat I’m the beginning. Now she has lost a lot of weight and won’t eat and barely drinks . What’s wrong

3 Answers

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on October 11th, 2017

Thanks for using Petco Pet Education Center, formerly Petcoach! Weight loss, inappetence and decreased water intake are all signs of a possible gastrointestinal issue such as pancreatitis, dietary indiscretion, gastroenteritis, gastrointestinal foreign body ingestion and obstruction, infections, among others. These types of conditions can progress rather quickly which is why I recommend that you have Bella evaluated by a veterinarian as soon as possible for further assessment and treatment. Diagnostics that will likely recommended include bloodwork and abdominal imaging. At the very least they can prescribe medications to make her feel better. Hoping for a quick recovery! Good luck!

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Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on December 26th, 2018

    Hi, and thanks for your question. These signs could be compatible with an inflammation infection of the gastrointestinal system and surrounding organs (like pancreas and liver). A clinical examination at your local veterinarian is immediately essential to confirm these clinical suspicions and treat appropriately. Antibiotics and possibly further investigations (like abdominal imaging as ultrasound or radiographs) may be needed. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. If this answer was helpful please let us know, this will be used to improve our service!

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    Answered By Lindsey Edwards MVB, BSc, IVCA

    Veterinarian

    Published on April 5th, 2019

    These are very concerning signs when they appear together and suddenly. A full physical exam would be required to determine the cause but organ failure, tumours or a bowel obstruction would all be possible

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