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Dog Vomiting Mucus? Here’s Why, and What You Can Do About It

From an Upset Stomach to Regurgitating Mucus, We've Got Answers

By September 18, 2013 | See Comments

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    PetCareRx Staff Veterinarian


Dog Vomiting Mucus? Here’s Why, and What You Can Do About It

Dogs can vomit a little after overeating, but if you notice your dog vomiting mucus then there might be cause for concern. Find out why this happens and what you can do to help.

If you notice your dog vomiting mucus, it may be cause for concern. But before you freak out, make sure you know all the facts first.

Vomiting in dogs is often confused with two other health conditions—the regurgitation of food (which is often covered in mucus), and expectoration, or coughing up mucus.

When you tell your vet that your dog has been vomiting mucus, she or he will likely want to rule out regurgitation and coughing as the culprits before determining what could cause your dog to vomit mucus.

Vomiting in Dogs

Vomiting does often begin with a form of clear liquid leaving the mouth—drooling. When plagued with nausea, dogs often drool and swallow more than normal. You’ll notice, that unlike in regurgitation, yacking is an active condition—your dog’s stomach will move in effort to bring up whatever’s going to come out of her or his mouth. Bile—usually a yellow or orange liquid—will often be present since this vomit has traveled from the stomach or intestines.

The cause: Some of the causes of vomiting in dogs include digestive issues, diabetes, and kidney failure. If your dog solely vomits foam or a yellow or clear liquid, it could indicate acute gastritis, pancreatitis, intestinal blockage, or other issues.

Regurgitating in Dogs

When regurgitating, your dog’s fluids and foods will escape easily—typically in a tube form (shaped like the esophagus it’s just traveled from), covered in a slick layer of mucus—without having to work at it. Your dog may even be as surprised as you are by this occurrence. There may be symptoms of coughing and gagging. Bile is not likely to be present. After regurgitation, your pet may want to eat the food that’s just resurfaced, so speedy cleanup is advised.

The cause: Usually regurgitation is the result of a glitch in the throat, esophagus, or the valve between the esophagus and the stomach.

Coughing in Dogs

If you’ve witnessed your dog hacking up mucus or foamy liquids, your pet may be coughing, not vomiting. The parts of the body that move visibly while a dog is coughing are the chest and ribs.

The cause: This symptom could signal a problem with your dog’s esophagus, respiratory system, sinuses, or heart. To learn more, read about gastritis in dogs and coughing in dogs.

How PetPlus Can Help

Whatever the cause of your dog's upset stomach, PetPlus has all the medication they might need to cure it. Meds like metoclopramide that can help ease their upset stomach can be purchased at a fraction of their retail cost, saving you a considerable amount (over half off in the case of metroclopramide).

This information is for informational purposes only and is not meant as a substitute for the professional advice of, or diagnosis or treatment by, your veterinarian with respect to your pet. It has, however, been verified by a licensed veterinarian for accuracy.


Pepto Bismo is the only thing that helps our 15 year old toy poodle. She has bad acid reflux...our vet said it was OK in moderation. We've been doing it for the last few years with no problems because of it.


My puppy is 4 month old, he stopped eating and is drinking water all the time. Then a minute later he throws up the water.


I have an American bully an pit mixed with chow dog he is about 3 or 2 years old he barks at every cat and dog and people walking that he does not like. Well he is throwing up white liquid with foam and the liquid is drooling down his mouth he will not eat just drink water . What do you all think is wrong with my dog . When he drinks the water he throws up again. Please help.


No. Do not give Pepto Bismol to dogs. My vet advised me against it.


Mu 10 year old Lab stated vomiting bile a few dfays ag, she is still eatng her food but appears depresse. We are seniors on a fixed inome and a trip the Vet is xpensive....any ideas??


When i got home i saw that my poodle had thrown up a seemingly thick yellow liquid. There didnt appear to have been any food in it. Any ideas?


My fur baby is a little over a year old very healthy energetic guy in the past few hours he's not been himself he's not bad lethargic but don't want to move much then he started vomiting white mucus dog food and grass...I have him pepto the vomiting subsided but are there any known k9 flus going around. No sneezing, coughing or diarrhea


Mine has to has yours improved


Take your dog to a vet immediately. It's an infection the in the digestive tract. I lost my Rhodesian Ridgeback to it, because all the vets misdiagnosed.


You guys haven't made that correction. You need to.


My puppy is 10 months old and he started vomiting here and there for the past 2 weeks 3 time with in that period. He is still energetic, but noticed he doesnt eat at his normal times though the day But till eats. Yellow type liquid and no food inside. He is black lab and border collie mix.. any ideas?


I wouldn't. Try some plain rice and a tbsp canned pumpkin.


My dog is 17 yr old chihuahua and vomiting bile a few times can I give her Pepto bismol?


My dog just-started throwing up very concerned what should I do?


I had a barrel chested dog. Took him out walking three times one day and he was happy, strong, and healthy. Later that night he began to vomit white froth, was complaining, lethargic, etc. I took him to the vet the next day and they went in for surgery of a "flipped" stomach. When they got in the stomach had been severley damaged and had turned black. I had to have him put down. So beware folks. Doesn't take long. I love that dog.


Same thing I was wondering...???


Fair point, Rizz. We will make a correction.


why put "What you can do about it" in the title, if thats not going to be in the article.

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