Dog Throws Up Yellow Mucus

Is your dog vomiting yellow liquid? Vomiting in dogs is a common problem which will naturally result in worry for any dog guardian. When the vomit is yellow with a foam, mucus or watery consistency, it is particularly concerning. Dog vomiting can be linked to poisoning, indigestion, enteritis and more. Since vomiting is a symptom of many diseases, our veterinarian will need as much information as possible to achieve a diagnosis.

At AnimalWised, we ask why is my dog throwing up yellow? We look at the possible causes of this problem as well as what treatments may be administered. You may also be interested in:

The vomiting of yellow mucus may be an indication that there is bile in the dog’s vomit. Bile is an alkaline fluid, which helps with digestion. It breaks down lipids (fats) into smaller particles, which the body is then able to digest.

Dogs often eat grass when they have an upset stomach, which can sometimes induce vomiting. If they are eating grass on a regular basis, however, it is a possibility that they can be ingesting more pesticides and parasites.

Your dog eating a foreign object, a known toxin, or something you suspect may be toxic (projectile vomiting could signal eating a foreign object)

If you are unlucky enough to not stop it from going down the hatch, you can inform the vet or poison hotline right away what it was and find out what actions need to be taken.

Dogs vomit for many reasons. Some of the reasons are nothing to worry about, but sometimes, vomiting is a sign of a serious health problem that needs immediate veterinary care.

Here is a list of possible causes of vomiting in dogs, whether it’s acute (one-time, sudden instance) or chronic (happens often over time):

3 Common Reasons For Yellow Dog Vomit

Here are some of the common reasons for a dog to vomit yellow foam or bile …

Empty Stomach An empty stomach is the most common reason for a dog throwing up yellow bile.

Lack of food can cause bile to build up and irritate your dog’s stomach lining. So, depending on when your dog normally has his meals … you may see your dog vomiting yellow bile at night, or in the early morning.

As dogs age, vomit happens more due to an empty stomach. Fortunately, this condition has an easy fix:

  • Feed smaller meals and …
  • Give your dog a snack at bedtime
  • These two things will help you avoid a dog throwing up yellow bile in morning.

    Food Sensitivities While there are common reactive foods like soy, corn and wheat … any type of food can cause a reaction. Food sensitivities can develop over time and they’re usually a sign of an unhealthy gut. Your dog’s gut is lined with a mucous membrane that stops pathogens from getting into your dog’s blood stream. But it can get damaged by things like poor diet, antibiotics, NSAIDs and other drugs, stress and environmental toxins. Then the spaces in the gut lining expand and allow substances like bacteria, viruses and undigested food particles into the blood stream. This is known as leaky gut syndrome and it leads to chronic problems like allergies or food intolerances … as well as more serious long-term problems like arthritis, autoimmune disease and even cancer.

    So, if your dog’s gut is unhealthy, new foods can also be the reason for your dog vomiting yellow. When you introduce a new food, try it first in a separate meal before adding it to your dog’s regular food so it doesn’t cause an irritated stomach (called gastritis).

    Sometimes you’ll see your dog eat grass or dirt … and then throw up yellow bile mixed with grass. Dogs do this to help cleanse the digestive system and it’s not usually anything to worry about.

    If your dog has severe gastritis … give his digestive system a break by:

  • Fasting for 24 to 48 hours, or …
  • Giving room temperature or slightly warmed bone broth for 24 to 48 hours
  • Inflammatory vomiting weakens the spleen. So it’s important to avoid serving your dog’s food cold or straight out of the fridge. Leave food on the counter until it’s room temperature.

    My dog is vomiting yellow and not eating

    Especially if it happens all of a sudden, a dog vomiting yellow and not eating could be due to poisoning. In this case, it is very important to look for other symptoms. When a dog has eaten something which intoxicates them mildly, they may vomit a little and refuse to eat while their stomach settles. If they start to become lethargic, slow their heart rate or have trouble breathing, they could be going into shock.

    Dog poisoning my also cause additional symptoms such as fever, apathy and dehydration. Both your dogs vomit and stools may also contain traces of blood. In the case of a dog vomiting yellow bile and not eating, we need to take the dog to a veterinarian if the symptoms worsen. They may require emergency treatment and the vet will be best able to administer fluid therapy or similar treatments. Our article on dog poisoning will help you know what to do in an emergency.


    Should I feed my dog after vomiting yellow bile?

    Yellow vomit is very common when a dog has an empty stomach, and the yellow color that you see is due to bile secretions. This occurs most commonly in the middle of the night or early morning hours. It can be caused by acid buildup, reflux, or any other systemic condition that causes nausea on an empty stomach.