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My dog throws up bile after new food. Is it the food or boredom?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 2 years and 11 months old | 63 lbs

My dog has thrown up bile for quite a few days. Normally this would be more concerning but he is still acting like himself and even his poop is solid. We switched to a different dog food because he is extremely picky and gets bored easily but seemed to eat a good amount then wasnt really interested anymore. Im wondering if its the brand or if hes just bored and wont eat it, which causes him to vomit.

2 Answers

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on October 20th, 2020

Suddenly switching foods can cause digestive upset which can lead to vomiting. Not eating often enough can also lead to vomiting for the opposite reason -- not enough food in the stomach can cause a buildup of bile and acid which leads to digestive upset and vomiting. If you switched Finn's food too quickly, returning to his old food and gradually switching over a period of 7-9 days can help ease the transition. If he's not eating enough, offering several smaller meals throughout the day can help keep him eating (without it being too large of an amount at once) without his stomach emptying completely. If he continues to vomit even with the above adjustments, or other signs and symptoms appear, a full workup at your vet is best.

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    Answered By Britni Miller, DVM

    Veterinarian

    Published on June 12th, 2017

    My first thought when you said he vomited and had diarrhea was that Finn has an upset stomach from the eggs and cheese. If his energy level and appetite are normal, that would be my primary concern. If it continues or anything changes he should be seen by his veterinarian. Some behavior modification medications take some time (up to weeks) to take full effect. I would discuss this with your veterinarian if Finn shows no improvement.

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