dog throwing up yellow

Why Is My Dog Throwing Up Yellow Bile?

It’s not unusual for you, as a pet owner, to see your dog regurgitate uneaten food shortly after hastily consuming their dinner.

While these occurrences are typically not a cause for concern, there are various reasons your dog may vomit, such as pancreatitis, food allergies, or gastrointestinal disease. 

However, if your dog is throwing up yellow bile, it could be a sign of a severe health issue and necessitates an immediate visit to your veterinarian. 

Continue reading to learn more about the causes, treatment options, and when to seek veterinary care for your dog’s yellow bile vomiting.

Causes of Dogs Vomiting Yellow Bile

There are a host of reasons why your dog’s vomit is yellow. It might be because they wolfed a yellow substance. In other cases, the stomach acids might irritate the dog’s stomach lining or cause yellow bile. 

So, it’s paramount, as dog owners, to watch closely after your dog throws up yellow vomit to determine whether it’s a serious health concern or a one-time occurrence. Here are some of the likely reasons for your dog’s yellow vomit:

Bilious vomiting syndrome

The Bilious vomiting syndrome develops when the bile moves into the stomach instead of the small intestine. This leads to your dog throwing up yellow foam. The yellow vomit is usually a mix of bile and stomach acids. 

This happens when your fur friend hasn’t eaten for a while or ingested fatty foods. Dogs can also suffer from bilious vomiting syndrome when they consume grass or excessively drink water. If this is why your dog throws up yellow foam frequently, then it’s vital to formulate a new dog’s diet high in fiber and low in fat. Also, it would be best to serve them in small meals frequently throughout the day. 

Gastrointestinal diseases

As mentioned earlier, your dog vomiting yellow tends to indicate the presence of bile. This can be due to chronic gastrointestinal diseases like pancreatitis, parasites, cancer, or infections.

Also, it might result from chew toys, bones, or grass, creating a blockage in your dog’s gastrointestinal tract. The intestinal blockage often results in chronic vomiting.

However, diagonalizing gastrointestinal disease based on yellow vomit alone can be misleading. 

For instance, if your dog has a bacterial infection, the symptoms include frequent vomiting and patchy hair loss. On the flip, intestinal parasites may cause your dog to be lethargic. Some dog breeds have sensitive stomachs, which makes them more susceptible to GI issues.

So, it’s best to take your furry friend to your vet to come up with the best treatment plan to address the underlying illness and relieve yellow vomiting and other symptoms. 


A dog throwing up yellow bile after consuming an oily meal likely suffers from pancreatitis. These fatty foods lead to inflammation in their pancreas, causing dogs to throw up yellow bile. Also, it might be accompanied by diarrhea and abdominal pain a couple of days after the ingestion period. So, avoiding fatty food in your dog’s food is best. 

Intestinal blockages

Another common cause for dogs throwing up yellow is intestinal blockages. Removing the obstruction requires immediate medical attention, which might involve a surgical procedure. No matter what your dog eats, his digestive tract is blocked. So, he’ll keep vomiting the food even on an empty stomach leading to the dog throwing up yellow bile.

A lot of things can obstruct your dog’s digestive tract. Therefore, it’s your responsibility to watch what they eat, especially during their playtime. Dog eats grass, pieces of their toys, sticks, and many things that can lead to an intestinal blockage and severely wreck their digestive tract. More importantly, immediately take your pup to the vet if he keeps vomiting digestive fluid. 


Food allergies can be the primary reason for your dog throwing up yellow bile. Most dogs with sensitive stomachs are likely to vomit bile when you switch to a new dog’s food. So, it’s best to change your dog foods gradually.

Changing your pet’s kibble can lead to the dog vomiting or suffering from an upset stomach. This is an example of a food allergy responsible for a dog vomiting yellow. 

Aside from food allergies, if your dog is throwing up, it might be due to certain medication allergies. So, pet parents need to monitor what triggers their dog’s vomit and avoid it.

How to Treat A Dog Throwing Up Yellow

The best treatment plan for dog vomiting yellow hinges on the root cause. Your vet would diagnose your pup and provide an effective method to treat your dog vomiting yellow bile and relieve other symptoms.

Immediately you notice the yellow vomit, try to figure out the underlying cause. For example, is your fur animal eating grass? Did you recently serve your dog new food? 

It’s vital that you have an idea of your dog’s recent activity to help your vet get to the root cause of your pup throwing up yellow., from stomach irritation to inflammatory bowel disease. 

Suppose this episode happens only a couple of times. In that case, you should continue paying attention to the pooch while keeping them hydrated. The vomiting should stop, and your dog’s health should return to normal. It could be a mild illness and nothing to worry about. 

However, if your dog is vomiting yellow in excess, take him to your veterinarian immediately. It’s best to allow a professional to diagnose your dog and formulate a treatment plan. It shouldn’t take long for your dog to recover once the allergen or toxin has been flushed out.

Dogs Vomit Yellow: FAQs

What do I do if my pooch is vomiting bile?

Your dog vomits yellow foam from stomach acid accumulating as your pet gulps down his meal quickly or throws up on an empty stomach. In most cases, it signals the presence of bile. So, if you don’t understand the cause of your dog’s yellow vomit, consult your veterinarian for treatment as soon as possible.

Why do my dogs throw up yellow?

If your dog is vomiting yellow, it might be because of gastrointestinal diseases like irritable bowel syndrome, cancer, or liver disease. Also, dogs are known for eating things that can irritate their stomach lining, which results in stomach pain and excessive throwing up. 


Dogs are very curious. This leads to biting on anything and everything. Some of these pieces might end up in their small intestine forcing their body to attempt to spill it out. Thus, leading to your furry friends vomiting and suffering from stomach upset. 

The best way to avoid this is to pay attention to your pets. If your dog’s stomach is sensitive, switch the dog’s diet to a bland diet. 

Notwithstanding, you should always consult your veterinarian when your dog starts vomiting unusually. 

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