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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 6 years and 3 months old | 65 lbs
My dog weighs 65 pounds he is a 6 year old mutt. Lately he has moved from ole roy food to retriever brand food. Today was the first day he was fully weaned. He hasn't eaten any of his new food in about 3 hours. He woke up and threw up on the carpet. Before we knew it he threw up again and when we let him outside he threw up one more time from what I can see. It was yellow and phlegm (wasnt watery) and had no chunks in it. Could this be due to his new food? Hes acting normal still not lethargic
3 Answers

Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on March 23rd, 2020
Answered By David Elbeze, DVM, MRCVS
Veterinarian
Published on September 5th, 2017
Yes, if you switched the food at once then it could definitely be the reason, even if you are transitioning gradually there could still be something in the new food she is not tolerating and thus causing vomiting.
1Pet Parents found this answer helpful
Answered By Dr. Melanie, BVSc MS
Veterinarian
Published on March 26th, 2020
It could be due to acid reflux if he's only vomiting in the morning. Do not try his old food, switching diets again can make this worse. Given this has been going on for three days, I'd have him seen by a vet for it.
1Pet Parents found this answer helpful