Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

Why is my dog throwing up yellow after switching to new food?

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

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 23rd, 2020

It could be due to the new food. I can give you a home remedy for Chance to se if that helps. Withhold food tonight, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he refuses to eat the bland diet, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away.

Vote icon

1Pet Parents found this answer helpful

Related Answers from Veterinarians

  • Image profile

    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.

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    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.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
Why is my dog vomiting? He has ate and drank today. His vomit is yellow, but has white chunks in it.
Shadow could be vomiting because he has a GI illness, may have eaten something rotten, has a foreign body, or pancreatitis. I can give you a home remedy to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. Best of luck.
Updated on September 24th, 2025
Petco Pet Education Center
Food & Nutrition
My dog has vomited several times today (sometimes chunky, sometimes bile) and is moving very slowly. When I tried to call her over, she would not come and I had to prod her to move, whereas usually she is very responsive. We gave her a different type
A change in diet can certainly be a cause of vomiting, and since Sunshine had a new food recently, that may the reason behind her vomiting. I can give you a home remedy to try to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in her normal diet. If the vomiting continues in the absence of food, she vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, she will need to see a vet right away. Best of luck, I hope this helps!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
Yesterday evening I gave my 5 year old dog Lucky some wet food and to find later that night to him throwing it up and eating it again he has been throwing up since this morning he is known to have a senstive stomach and that is why we feed him one br
Poor Lucky! I can give you a home remedy to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. Best of luck.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
I'm a little concern about my buddy. Today he threw up, no food, no unknown things in the vomit only bubbly mucus and yellow. He had not eaten breakfast yet, he pooped normally. He had blood work done on April 11 and all was fine, he actually is a he
I would be concerned about Buddy as well. It could be he has a GI illness. I will give you a home remedy to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. Best of luck.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My dog just threw up like this, what could it be? He has never thrown up like this. He had not eaten anything, yesterday i got him new treats, and earlier today i gave him a few kibbles duck flavor as treats that he has never had before.
Poor Iker! It could be the new treats you gave him causing the vomiting. A sudden change in diet such as new treats can causing GI upset. I can give you a home remedy for him to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. I hope this helps!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
What should I do my dog doesn't want to eat after he took a bath. Then in the evening he vomits yellow liquid from 8pm, 3:30am and 5:30am. His stool is hard.
Poor Skyler! I can give you a home remedy for him to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the vomiting continues in the absence of food, he refuses to eat the bland diet, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away. Best of luck.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
I got a dog friday and he ate some food saturday and now he is throwing up do you know what it could be?
I'm sorry that new dog is sick! The food that Loki ate on Saturday could be causing his vomiting. He could also have a GI illness, foreign body, or pancreatitis. I can give you a home remedy to try to see if that helps with his vomiting before having to take him into the vet. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in Loki's normal diet. If the vomiting continues in the absence of food, he vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
Good night, candy has vomited twice today and it was yellow I’ve seen that before throwing up she breathes differently, she normally eats little she doesn’t like her food, what can I do?
Thank you for contacting Boop by Petco with your question about Candy. Poor girl! I can give you a home remedy to see if that helps. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) and white rice in small amounts several times a day for a couple of days. Then slowly add back in her normal diet. If the vomiting continues in the absence of food, she refuses to eat the bland diet, she vomits the bland diet, develops diarrhea, stops drinking water, starts vomiting water, or becomes very lethargic, she will need to see a vet right away. I hope this helps!
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My dog Wes is 7 months . We just moved to a new house he has been vomiting not much here and there . But last night he vomited a lot and it was yellow i put him outside for a little and tried to feed him usually he’s eats his food super fast but he d
Throwing up can be caused by a food sensitivity, dietary indiscretion, intestinal parasites, an intestinal blockage, bacterial infection, viral infection, the weather, food change, stress, etc.  I would fast Wes for 24 hours and then him 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 regular food slowly over a few days. If this does not clear up thevomiting or if the vomiting increases, or if your dog gets lethargic, he needs to see a veterinarian for an exam as there may be something more serious such as an infection going on.
Updated on September 24th, 2025
Petco Pet Education Center
Health & Wellbeing
My dog, he is a Shitzu, weighs around 15 pounds, 1 year and 6 months old. It's not eating as before, he leaves food for hours in his bowls, and sometimes vomits a yellow substance which I think is because he has not been eating so he has an empty sto
Throwing up can be caused by a food sensitivity, dietary indiscretion, intestinal parasites, an intestinal blockage, bacterial infection, viral infection, the weather, food change, stress, etc.  I would fast your dog for 24 hours and then put the dog 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 regular food slowly over a few days. If this does not clear up the diarrhea or if the vomiting increases, or if your dog gets lethargic, he needs to see a veterinarian for an exam as there may be something more serious such as an infection or chronic pancreatitis going on.
Updated on September 24th, 2025

Related Searches

Dog Food Cat Food Sensitive Stomach Dog Food Dog Food With Grain Wet Dog Food Limited Ingredient Diet Dog Food Prescription Dog Digestive Medications Dog Health & Wellness Dry Dog Food Premium Dog Food Nutri-Vet Sensitive Stomach Dog Food Under the Weather Sensitive Stomach Dog Food Yummers Sensitive Stomach Dog Food Advanced Health Sensitive Stomach Dog Food JustFoodForDogs Sensitive Stomach Dog Food Blue Buffalo Natural Veterinary Diet Science Diet Sensitive Stomach Dog Food PetAlive Sensitive Stomach Dog Food Solid Gold Sensitive Stomach Dog Food Royal Canin Sensitive Stomach Dog Food
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored