Dogs are known for their loveable personalities and their loyalty to their owners. They are often considered to be a member of the family and their health is of the utmost importance. One condition that can be concerning for dog owners is sudden excessive drooling.

This can be a sign of a serious underlying condition and requires prompt medical attention. In this article, we will discuss the causes, diagnosis, and treatment options for sudden excessive drooling in dogs.

Causes of Sudden Excessive Salivation in Dogs There are several potential causes of sudden excessive drooling in dogs, including:

  1. Dental Issues: Dental problems such as tooth decay, abscesses, or broken teeth can cause pain and discomfort in dogs, leading to salivation. In some cases, the dog may be reluctant to eat or drink, which can lead to dehydration.
  2. Gastrointestinal Issues: Dogs may drool excessively if they have an upset stomach, gastrointestinal blockage, or other digestive issues. This can be caused by eating something that disagrees with them or a more serious underlying condition such as pancreatitis or cancer.
  3. Neurological Issues: Neurological disorders such as seizures or brain tumors can cause drooling in dogs. In these cases, the dog may also have other symptoms such as loss of coordination, changes in behavior, or difficulty walking.
  4. Poisoning: Dogs may drool excessively if they have been exposed to toxic substances such as chemicals, plants, or medications. In this case, the salivation is often accompanied by other symptoms such as vomiting, diarrhea, or seizures.
  5. Heat Stroke: During hot weather, when dog’s pant excessively, they will drool as well. In severe cases, they can develop heat stroke which can be life-threatening if not treated immediately.
  6. Others Other less common causes of sudden excessive drooling in dogs include foreign bodies in the mouth or throat, cancer of the mouth or salivary glands, and certain medications such as those for Parkinson’s disease, which can cause dry mouth.

drooling dog


Diagnosis of Sudden Excessive salivating in Dogs Diagnosing the underlying cause of sudden excessive drooling in dogs can be challenging. A veterinarian will typically start by performing a thorough physical examination, during which they will check the dog’s mouth for any signs of dental problems or foreign bodies.

The vet will also check the dog’s vital signs and look for other symptoms that may indicate an underlying condition.

The vet may also order diagnostic tests such as blood work, X-rays, or ultrasound to help identify the cause of the drooling. If the vet suspects a neurological disorder, they may refer the dog to a specialist for further testing.


Sudden excessive drooling in dogs can be a sign of a serious underlying condition and requires prompt medical attention. Causes can range from dental issues to neurological disorders to poisoning.

A veterinarian will perform a thorough physical examination and may order diagnostic tests to help identify the cause of the drooling. Treatment will depend on the underlying cause and may include dental surgery, medication, or specialized care.


It’s always important to pay attention to your dog’s behavior, if you notice any unusual drooling, it’s better to contact your vet for proper diagnosis and treatment. An early diagnosis and treatment can help prevent more serious problems and keep your dog healthy and happy.

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