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Why is my dog throwing up bile and food after eating? What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 1 year and 11 months old | 40 lbs

Hi there, my 40 pound Staffie mix had been throwing up bile in the morning once every 7-10 days, then we adjusted his eating schedule and he throwing up was less frequent for a few weeks. Now he’s back to every week even with the more frequent meal times (same amount of total food) and tonight he threw up his food about 30 minutes after eating. He eats two cups total of Hill’s Science Diet Sensitive Skin/Stomach. What could be causing this and what should we do?

2 Answers

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on March 3rd, 2019

Poor Louis! There are many causes for continued vomiting. Certainly parasites like worms and giardia can cause frequent vomiting. Bacterial over growth is also common in younger dogs. Food allergies or intolerance are possible at his age. Lastly a more serious cause can include a partial intestinal obstruction. I recommend to have Louis visit his veterinarian for a physical exam and to rule out some of the more common causes. Treatment will depend on the cause and may include medications or a special diet. Once you know the cause, Louis can get appropriate treatment and feel better. I hope this is helpful and please feel free to post any additional questions.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on

    Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Louis. I'm sorry you are having such problems with him vomiting. There could be a couple of reasons why he is throwing up. He could be eating too quickly, causing him to ingest a lot of air, leading to the vomiting. It could be due to anxiety or fear, such as if he shares the home with other animals and feels the need to eat quickly so his food isn't stolen. It could be he loves the taste of his food, causing him to eat quickly and thus the vomiting. There could also be a medical reason behind it, such as pancreatic disease, diabetes, Addison's disease, GI ulcers, kidney disease, or liver disease to name some. I would take him into the vet first thing in the morning for a physical exam, blood work, and urinalysis. From those results, the vet may decide to pursue further testing, or there may be answer leading to treatment options. I hope this helps.

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