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Why Is My Dog Vomiting White Foam?

An older, sick dog lying down.

Is your dog vomiting white foam? Bearing witness to your dog vomiting white foam can be disconcerting at the best of times and cause dog owners to panic at the worst. There are so many reasons for digestive upset in dogs, and they share so many similar symptoms, that general upset can be difficult for veterinarians to diagnose quickly. While some of the causes for a dog vomiting white foam — such as a dog finding rotting food in the garbage or ingesting a foreign object — can occur to any dog at any time, you can manage, treat or prevent the riskiest and most dangerous reasons for a dog vomiting white foam.

First, why is your dog vomiting white foam?

Why is your dog vomiting white foam? A sick or sleeping Retriever dog, lying down.
Why is your dog vomiting white foam? Photography © MartinPrescott | E+ / Getty Images.

A dog who gets sick once before returning to normal is likely to have eaten something she shouldn’t. If a dog throws up several times in a day or for more than a couple of days in a row, on the other hand, schedule a veterinary appointment. The leading causes for a dog vomiting white foam include internal injury, infection and inconsistent eating habits. The major ones we’ll examine for a dog vomiting white foam include:

  1. Ingesting toxins, poisons, foreign objects
  2. Bilious vomiting syndrome
  3. Pancreatitis and other digestive inflammations

1. A dog vomiting white foam may have eaten something strange

Eating a foreign object can lead to an upset stomach, indigestion or intestinal blockages, all of which might reasonably point to a dog vomiting white foam. With the exception of dog toys, small, loose objects should be kept well out of the reach of indoor dogs. Household items that are toxic to dogs — especially household cleaners that not dog safe and pesticides directed toward insects or rodents — can also cause adverse reactions, like a dog vomiting white foam.

Store all household chemicals in tightly-capped, shatterproof containers and never leave them out. If you put out rat, roach or mouse traps, put them in spots out of your dog’s reach. Here is a list of plants and foods that can be toxic to dogs. Note the presence of any of these in your home. It may be of critical importance to a veterinarian if a dog is vomiting white foam.

2. Your dog might be throwing up foam because of Bilious vomiting syndrome

Bilious Vomiting Syndrome in dogs is similar to acid reflux in humans. Bile and stomach acid are naturally occurring fluids that aid in the digestion and processing of food. On an empty stomach, however, they can cause irritation. That irritation can lead an otherwise healthy and hungry dog to ignore meals, or, in more extreme situations, vomit to expel the excess. The vomit from Bilious Vomiting Syndrome can be colored yellow, white, green, orange, brown or some mixture. Sometimes, it’s accompanied by slimy mucus.

Feeding an active dog smaller meals at regular intervals throughout the day — including a small snack first thing in the morning and last thing at night — may be the best and easiest way to address what could become a more serious problem. If excess stomach acid or bile are…


About the author

Jessica Goldberg

Jessica Goldberg

Editor for @DogCoutureCNTRY | Love my outdoors yoga | Family, friends and of course puppies dogs. Go figure! social media geek at heart community manager. Follow @JessicaGoldb

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