My dog keeps throwing up yellow fosm; three times now. Pet's info: Dog | Pit Bull Terrier | Male | unneutered | 2 years and 8 months old | 87 lbs

Hello. Vomiting can be due to many causes. If she didn't have breakfast and had a long time before a meal, she could have vomited because of an empty stomach ("bilious vomiting"). She also could have eaten something that is now stuck in her gut and causing a blockage, or something that has just upset her stomach. They can also get heat exhaustion and heat stroke that can lead to vomiting, but she would likely look very sick otherwise. If she is otherwise happy and bright and playing, you can feed her a small amount of boiled rice and boiled chicken (boneless/skinless) in small frequent meals. If she keeps that down and is bright and happy don't worry. If she is sick, not eating, sore tummy, or very lethargic, then I would get her to a vet for some x-rays. Good luck with Bella!

This is not specific to any disease, but indicates that something is either directly upsetting her stomach, or generally making her feel nauseous. The yellow color is due to bile staining which doesn't tell much other than she is vomiting on an empty stomach. In order to discover the cause of this problem you would have to take Alle to a veterinarian for an evaluation. They can help narrow-down the cause of this and provide treatment to at-least make her feel better. For more information about vomiting, I recommend you read the article at the link below. https://www.petcoach.co/article/diarrhea-vomiting-in-dogs-when-to-call-your-veterinarian/ If you have further questions or need further clarification, then you may consider having an online consult with one of our vets on Petcoach. This way, you can send unlimited pictures and have a text conversation with a vet. I hope that helps and Alle gets better soon.

Observe Mina and if she does not throw up again, then she likely was car sick. If she vomits again, outside of the car, then do the following: Throwing up can have many causes. It is basically a problem with the stomach and intestines caused by a food over sensitivity, eating something that does not agree with the dog, intestinal parasites, bacterial infection, viral infection, the weather, food change, stress, etc. I would fast Mina for 12 hours and then put her on bland food for two days, such as boiled white rice and boiled white boneless chicken meat, fed in small quantities over several feeds and then transition back to her regular food slowly over a few days. If the vomiting does not stop or increases, or if she gets lethargic, she needs to see a veterinarian for an exam as there may be something more serious such as an infection going on.

Why is my dog throwing up yellow foam repeatedly? Should I worry?

Updated On September 23rd, 2025

My dog keeps throwing up yellow fosm; three times now

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Answered By Ricardo Fernandez, DVM 191

Veterinarian, Veterinary Oncology Resident

Published on July 24th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! Vomiting can be observed with conditions such as gastroenteritis, pancreatitis, dietary indiscretion, gastrointestinal foreign body ingestion and obstruction, among other possibilities. For this reason, I highly recommend that you have Diesel evaluated by a veterinarian for further assessment and treatment as soon as possible as I am afraid he is likely becoming dehydrated. They would be able to check for these possibilities and also check his hydration status and give him medications to make him feel better. Good luck!

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Why is my dog throwing up yellow foam repeatedly? Should I worry?

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