Why Is My Dog Vomiting Pink Foam?

correct answerThe Short Answer is:

It is more likely that the pink frothy fluid was coughed up from the lungs than vomited. This can be confirmed by some symptoms. Mucus from the lungs will not be as acidic as vomit because it looks like mucus.

In this research you will know the answer to the query “Why Is My Dog Vomiting Pink Foam?“.

There are many people who have owned dogs in their lifetime but have never seen them vomit red or pink foam. 

We tend to be hyper-aware of what goes into and comes out of the mouths of our pets especially since we are unable to ask how they are feeling. 

As dogs are very independent and curious we cannot always keep an eye on them 24/7.

However with the right information we can develop the ability to spot a potential problem early.

Why do dogs vomit bile? Most common reasons

Knowing the difference between vomit and regurgitation is important. An undigested item can be quickly regurgitated if the dog has ingested something it should not have. 

Sometimes vomiting appears out of nowhere and is not always related to food intake. 

Generally the color of Bile is dark green or yellowish-brown. This is noticeably different from vomit and regurgitated food.

Bile can be vomited by dogs for many different reasons. 

Gastrointestinal disease

When the dogs stomach and intestines become inflamed this occurs. If you do not take your dog to the vet you would not be able to determine the cause. Inflammation may arise from parasites bacteria poisoning kidney disease or cancer. 

Bilious vomiting syndrome

Bile is naturally produced in the liver and stored in the gallbladder by dogs. A bile leak into the small intestine can cause this syndrome. Eating too much or drinking too much are the most common causes. 

You can prevent this from happening again by providing your dog with a low-fat high-fiber diet.


Dogs can suffer serious health consequences from pancreatitis. Occasionally the condition is fatal. Diabetes and obesity are factors that cause the pancreas to become inflamed. 

As part of digestion enzymes are normally produced in the pancreas. This can however cause devastating effects on the area around the organ when these enzymes begin to produce outside of it.

When a dog is rushed to the vet with pancreatitis an intravenous drip is likely to be administered.


It indicates that the stomach has been emptied when a dog vomits bile. The stomach lining is irritated by gastric acids in bile causing vomiting. It may be worth considering whether you have changed your diet recently or whether the dog has eaten something they should not have.

It is possible for dogs to have allergies to anything including chicken and corn.

Stress or anxiety

Stress or worry can also cause dogs to avoid eating for a long period of time similar to allergies. As a result the gastric acids irritate the empty stomach lining and the dog becomes ill.

Stress can actually cause vomiting for a variety of reasons including separation anxiety.

How is vomiting bile different from vomiting food or ‘foreign objects’?

Its not uncommon for dogs to vomit after eating something they should not have. They have simply eaten too much or their stomach has rejected the item especially if it was a toxin or foreign object.

Bile can be a sign that something more serious is happening with the body. 

Veterinarians should be notified about any bile that has been expelled. Although vomiting once does not necessarily mean you should worry bile reflux is definitely a sign you should find out whats happening in your dogs body.

When the dog vomits bile it is also at risk of becoming dehydrated. Dogs are 85% water so they must replenish their lost water levels as soon as possible. 

Gallstones can cause damage to the esophagus and stomach when excessively vomited.

In some cases green bile can be a sign of a bowel obstruction. 

Why do dogs vomit pink or red foam?

It is more likely that the pink frothy fluid was coughed up from the lungs than vomited. This can be confirmed by some symptoms. Mucus from the lungs will not be as acidic as vomit because it looks like mucus. 

Bloody vomit is a sign that your dog is coughing up blood. Bloody vomit is a sign that your dog is coughing up blood. Your dog is coughing up blood when he vomits blood. This is called hematemesis. A number of factors can cause this including gastrointestinal problems poisoning trauma or ulcers. 

Vets should be contacted if there are any signs of red in vomit. It is still important to have this checked out even if it is nothing serious.

As a general rule the darker the red the longer the blood has been in the stomach. 

What other symptoms might you see together with the pink foam?

Depending on what caused the pink foam this can really vary.

Diarrhea is typically associated with cancer or gastrointestinal issues. The symptoms of lung cancer in particular can include weight loss lethargy loss of appetite and persistent coughing. 

Constant panting as well as trouble breathing can also be signs of heart failure. 

If you are poisoned you can expect seizures convulsions and agitation.

It is rare for pink foam not to be a cause for concern so it should always be taken seriously.  

How can it be treated?

First the veterinarian must determine what is causing the vomiting. Once they know what is causing the vomiting they can begin treatment. 

It may be necessary to keep the dog fasting for up to 48 hours if the dog has gastritis. When a veterinarian suspects an allergy they may stagger out their current diet to identify the culprit. 

Additionally herbal remedies can be very helpful:


Inflammation in the digestive tract can be reduced by chamomile. The tea soothes aches and burns in the stomach as well as prevents acid reflux.


The cooling effect of licorice on the stomach makes it useful for treating heartburn as well as bile reflux. 

Marshmallow root

Marshmallow roots coat and soothe the gastrointestinal tract. They also help reduce inflammation and heat. 


Those dogs whose stomachs are acidic should take Meadowsweet.

Using a measured dropper all herbal supplements would be poured into the dogs food at a low dosage.

It is possible for a dog to vomit bile in the morning if he woke up with an empty stomach. If this is the case the dog may receive smaller more frequent meals throughout the day or a late meal before bedtime. 

When is dog vomiting serious?

Blood that is dark red in color is extremely serious and requires immediate attention. As such we should pay attention when we vomit since its a sign of whats happening internally.

An emergency visit to the vet is also necessary when a dog vomits white foam.

It is important to carefully examine any dog vomit for abnormalities. If something does not seem right consult another veterinarian. 

When is a dog vomiting nothing to worry about?

Its not uncommon for our dogs to vomit sometimes especially after eating something they should not have. Overeating is also a reason for them to vomit. Veterinary calls spike after Thanksgiving and during the Christmas season for a reason!

In the following hours or days any dog who vomits should be closely monitored. Keep in mind that the dog may not always vomit out in the open. In some cases they may bury it in the garden or retreat to a quiet area. 

If you have any concerns you should always consult a veterinarian.

Also keep an eye out for any other symptoms your dog might be showing. 

What are other common colors of dog vomit and what do they mean?

Yellow vomit 

Commonly this happens. The alkaline nature of Bile allows it to neutralize the acidic contents of the stomach. Consequently the vulnerable lining of the small intestine is also protected. 

The contents of the stomach then pass through a valve called a pyloric valve which connects the stomach and small intestine. Once that valve is closed the stomach is empty.

A leaky valve allows bile to leak back into the stomach where it reacts with acid. This causes the yellow bile that is characteristic of the less serious causes of bile expulsion such as an empty stomach.

Red vomit

Blood is almost always present in red sick and your dog must be seen by a veterinarian immediately.

Blood with a light color could indicate inflammation while blood with a dark color could indicate a long-term problem such as an ulcer.

White vomit

Vomiting white is probably just an upset stomach. 

You need to seek medical attention right away if it is white bile. White bile is indicative of gastrointestinal problems and should be treated as an emergency.

Dark brown vomit

Ingesting too much feces is likely the cause of your dogs diarrhea. Vomiting that is excessive however could be an indication of intestinal obstruction. 

Black vomit

Diagnosing this condition on your own is difficult so be careful. There is a possibility that jet black vomit could be dirt ingestion however you should check whether the color is black or dark red.

Dark red vomit is a sign of something serious and your dog should be taken to the vet immediately. 

A texture that is consistent with coffee granules is also acceptable. 

If you want to read more about dog health tips read here: Dog Health Tips and Tricks.

Why Is My Dog Vomiting Pink Foam? (Watch Video)

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