Dog Foaming at Mouth: Yellow, White Foam. Treatment.

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Dog Foaming at Mouth

Witnessing your dog foaming at the mouth can be extremely disturbing and depressing. People often think that foaming at the mouth is linked with rabies; however, is that really the cause? Is there any other reason behind this scenario? Please continue reading to know the possible cause, its symptoms, and treatment.

What is Foaming at the Mouth?

Foaming at the mouth in dogs usually looks represents white foam drooping along their mouths. Dog foaming is caused by excess saliva pools in the mouth, which mix with air, producing foam. It can be worsened if the dog gasps for air experiences discomfort, confusion, and stress. Over the years, people have linked it to rabies.

Reasons for dog foaming at the mouth

Suppose your pet is foaming at the mouth; it is recommended that you schedule a visit with your vet right away.

Why is Your Dog Throwing Up White Foam?

There are several possible causes for your dog throwing up white foam. The primary reasons include feeding habits, infection, and internal injury. 

Often, your dog will eat something with a foul taste, nip on grass, or consume something unpleasant, which will cause a tummy ache. Medicine or an obstruction in your dog’s throat may stop saliva from moving down, which will result in hypersalivation. Below is a list of factors to consider before taking your dog to the vet.


White foam could be a sign that your dog’s digestive system is trying to eliminate anything toxic your dog might have consumed. Moreover, it is also a sign that he is experiencing a mild stomach ache. Your dog might not be able to tolerate the dog food on offer, which will cause his mouth to form.


Bloat occurs when a dog’s abdomen fills with gas or fluid, which causes the stomach to rotate within the abdomen. Your dog may vomit white foam after exercising or eating as his stomach has loaded with fluid or air.

Reflux Gastritis

It could be caused by the accumulation of acid overnight in his stomach. The acid irritates your dog’s stomach, causing acid reflux. This often happens when a dog’s stomach is empty.

Dog Throwing Up White Foam

Kidney Problems

If also exhibiting signs of disorientation, laziness, and fatigue, a dog throwing up white foam may indicate that he has kidney problems and not a common tummy ache.

Kennel Cough (Infectious Tracheobronchitis)

This is an immensely contagious respiratory illness. The condition affects dogs that stay in dog kennels for extended periods – and this is why they call it ‘kennel cough.’ Vomiting will perhaps be followed by a heavy cough, runny nose, or sneezing.

Fungal Infection

Because of dogs’ curiosity, they can pick up fungi as they rub, excavate, or sniff along the contaminated part of the ground, particularly if the soil has bat, chicken, or bird droppings. The fungi can cause an infection distinguished by a heavy cough and a white foam secretion if sniffed or eaten.


Inflammation or swelling of the pancreas obstructs a dog’s natural gastrointestinal activity. When food cannot be suitably and frequently ingested, metabolized, and discharged, the dog has no choice but to throw up excess substance in his belly, and white foam props up with it. 


If your pet is up to date with vaccinations, the white foam can’t be categorized as a symptom of rabies. Suppose your dog gets rabies; he will start to vomit white foam in the latter stages (after severe muscle contractions and aggression).


Parvovirus is a dangerous viral illness that generally affects puppies. Signs of parvo, aside from dog vomiting white foam, are a bloody and smelly discharge.

Dog Throwing Up Yellow Foam.

In some cases, dogs throw up yellow foam. This suggests that they are eliminating bile, which is a digestive fluid made in the liver and stored in the gallbladder. 

When dogs regurgitate yellow liquid, it may only mean that the stomach is empty, and the bile induces stomach upset. This explains why some pups will vomit when they are starving. However, if your dog is healthy and he’s eating and excreting regularly — it may help to divide his meal into smaller portions.

Dog Throwing Yellow Foam

Below are a few of the usual causes of yellow vomit in your dog.


Your dog may be intolerant to its diet without you realizing it. Allergies may trigger your dog to vomit. Some foods on offer can cause an immune response and prompt inflammation. This generates excess fluid and vomiting.

Wheat and chicken, often the ingredients in most kibble, are the most common food allergens. Take notice of your pet’s eating habits, especially if you choose to change their diet. Sometimes, an unexpected alteration in your dog’s food can induce vomiting and a stomach problem.


Allergies may be another reason your dog is throwing up. He may be allergic to his kibble without you even realizing it. Be very alert when it comes to your dog’s eating habits, especially if you choose to change his diet. Usually, a sudden change in your pet’s diet can result in digestive disorders and vomiting.

Eating Grass

If a dog has a stomach ache, he will eat grass to induce vomiting; hence, easing the pain. Grass typically has fertilizers and other chemicals which can make your dog very sick. When your dog ingests some greens, it may manifest as yellow foam.

What To Do if Your Pet is Foaming at the Mouth.

There are a myriad of reasons why your dog may be foaming at the mouth. The first thing you need to do is to schedule a visit with your vet.

If your dog is anxious, calm him down by removing any stimuli or transferring him to a less intense environment. You can also give them food/water, make the surroundings quieter, or be by his side until he calms down. 

In some cases, foaming is accompanied by seizures. But, even after identifying the possible reasons, you need to stay composed in case such an attack happens. On top of that, you must provide some support for your dog. You need to help them settle down. 

The vet will administer tests to obtain the underlying cause. They will prescribe IV fluids and other procedures to alleviate the dog’s stress in most cases. With the pup soothed, the doctor will address some questions on the dog’s symptoms. This will provide the expert with a better understanding of what might be triggering the condition. 

The vet may choose to administer some examinations such as biochemistry profile and a clinical urine test. This is done to get basic information. These examinations will give the doctor an idea of what is happening.

How to Prevent Dog Mouth Foaming?

The best thing to do is to stop your dog from foaming at the mouth is to prevent him from chewing, eating, or tasting toxic substances. Realistically though, there are times when you won’t be able to prevent your dog from nibbling at things he finds in the garden. 

Well, there are a few measures you can take to lessen the odds of your dog foaming in the mouth.

  • Bring your dog to the pet clinic for routine health checks yearly or more if advised by the doctor.
  • Serving your dog foods that prevent any stomach problems, like vomiting and nausea. If your dog is prone to stomach upsets, your vet can suggest a good and nutritious diet that will improve your pet’s diet.
  • Keep your dog hydrated, especially if he’s anxious or exhausted. Sweating, drooling, and panting can happen after a strenuous exercise and if your dog is stressed; hence, replenishing this fluid can help block foaming at the mouth from occurring.
  • Stop your dog from nibbling, tasting, and eating dangerous things: store chemicals and other toxins in a secluded place. Refrain from giving your human-dog foods as much as possible. 

Make sure that you call your vet once some symptoms manifest.

Prevent Dog Mouth Foaming

Wrap Up

Though not usually something to be bothered about, foaming at the mouth can co-occur because of several factors. Your dog foaming at the mouth is perhaps manageable if it happens in a car or during playtime.

Various factors may cause foaming, and some can be prevented with up-to-date vaccinations and adequate hygiene. It is best to take to a vet regarding your dog’s condition. 

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