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Why is my dog throwing up white chunks and acting very lethargic?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 4 years and 5 months old | 24 lbs

My 4yr old dogs been throwing up since last night. About 5 times today. Had white chunks. Dont know what that is. Just had water. Threw it up 3 minutes later. As day has gone on he's very lethargic.

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1 Answer

Most Helpful Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on April 19th, 2018

I am sorry to hear about Sam. It sounds like he is not feeling well at all. There are many different possible causes of vomiting in dogs. Some of the most common include ingestion of foreign objects, pancreatitis, ingestion of toxins, gastroenteritis, and more. You can read about vomiting at https://www.petcoach.co/article/vomiting-in-dogs/ . Due to the fact that he is very lethargic I would recommend taking him in to see a vet as soon as possible- to an emergency clinic if one is in your area if you feel he is very lethargic and continues to vomit. Do not offer anymore food and water tonight as he will likely just vomit it back up. The vet will examine him and may recommend x-rays or bloodwork to help determine a cause for vomiting and will most likely give injectable medication to stop the vomiting and IV fluids to help rehydrate poor Same.

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