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Why is my dog vomiting solid food then watery foam for two days?

Updated On September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Male | neutered | 8 years and 5 months old | 18 lbs

Hi, my dog has been vomiting over the past two days. It starts about an hour or so after meal wh3n it’s quite a solid mass and carries on into the night when it turns to watery foam

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on December 26th, 2017

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 Louis 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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