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My dog is vomiting, losing weight, and won't eat or drink. What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 1 year and 1 month old | 25 lbs

My dog has lost weight. Throwing up and won't eat or drink I'm very worried about her. What do I do?

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1 Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on August 23rd, 2017

Possible causes for vomiting include dietary intolerance, dietary indiscretion, food allergy, intestinal parasites, GI blockage, gastroenteritis, bacterial or viral infection, IBD, pancreatitis, among others. In a young dog, intestinal blockage is at the top of my list. I recommend that Taylor get checked out by a vet as soon as possible. Weight loss can be caused by severe dehydration or other internal illness, but always indicates a serious problem that needs medical care.

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