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Why Is My Dog Drooling & Acting Strange? 15 Vet-Approved Reasons

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By Nicole Cosgrove

close up of a female tibetan mastiff dog with drool

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Reviewed & Fact-Checked By

Dr. Amanda Charles

Veterinarian, BVSc GPCert (Derm) MRCVS

The information is current and up-to-date in accordance with the latest veterinarian research.

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Have you ever noticed your furry friend drooling excessively and behaving strangely? While some drooling is normal for dogs, excessive drooling accompanied by odd behavior can be a cause for concern.

In this article, we will explore the various reasons why your dog may be drooling excessively and acting strangely. Whether it is a minor issue or something more serious, we’ve got you covered with a comprehensive list of potential reasons!

So, let’s dive in and help you decode what’s going on with your beloved canine companion.

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What Is Typical or Normal Drooling for Dogs?

First, let’s establish what constitutes typical or normal drooling for dogs. It’s important to understand that some breeds naturally produce more saliva than others. Breeds like Saint Bernards, Bloodhounds, and Mastiffs are notorious for their slobbery tendencies.

Additionally, dogs may drool when they anticipate food or during periods of excitement. These types of drooling are generally considered normal and not cause for alarm. However, when your dog starts drooling excessively and displaying abnormal behavior, it’s time to pay attention.

Cute French Bulldog hungry and drooling
Image Credit: Amornpant Kookaki, Shutterstock

Is Excessive Drooling in Dogs an Emergency?

Excessive drooling in dogs can be alarming, but it doesn’t always indicate an emergency. However, in some cases, it could be a sign of a serious underlying condition.

It’s crucial to consider the overall health and behavior of your dog when assessing the situation. If your dog is otherwise healthy, eating and drinking normally, and displaying their usual behavior, it may not require immediate veterinary attention.

If, however, the drooling is accompanied by other concerning signs or a sudden change in behavior, it’s best to consult a veterinarian to rule out any potential emergencies.

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The 15 Potential Reasons Why Your Dog Is Drooling & Acting Strange

1. Gastrointestinal Issues

Just like humans, dogs can experience nausea and gastrointestinal discomfort. When they feel sick, they may drool excessively. If your dog has ingested something that doesn’t agree with their stomach, it can lead to nausea and excessive drooling. Keep an eye out for vomiting, diarrhea, or a loss of appetite, as these signs may indicate an underlying gastrointestinal issue.

Drooling adult Saint Bernard dog sitting on the grass on a summer day
Image Credit: Andres Serna Pulido, Shutterstock

2. Dental or Gum Disease

Dental problems, such as gum disease or a tooth abscess, can cause your dog to drool more than usual. Dogs with dental issues may also exhibit signs of pain, reluctance to eat, and bad breath.

Regular dental care such as regular teeth brushing and professional cleaning is essential to maintain your dog’s oral health.


3. Mouth Injuries

Injuries to the mouth, including cuts, punctures, or foreign objects lodged in the gums, can cause excessive drooling. If you notice any wounds or bleeding, seek veterinary assistance immediately to prevent infection and further complications.

vet checking dog teeth
Image Credit: Yavdat, Shutterstock

4. Foreign Bodies

If your dog has swallowed a foreign object, such as a bone fragment, stick, or small toy, it can cause drooling and discomfort. In some cases, the object may become lodged in the digestive tract, leading to more severe complications. Seek veterinary attention immediately if you suspect your dog has ingested a foreign object.


5. Growths and Lumps

Oral growths, tumors, or lumps in the mouth or throat can obstruct normal salivary flow and cause excessive drooling. Regularly check your dog’s mouth for any abnormalities and consult your veterinarian for further evaluation.

sick border collie dog at the vet clinic
Image Credit: antoniodiaz, Shutterstock

6. Stress and Anxiety

Anxiety and stress can manifest in different ways in dogs, including increased drooling. If your dog is experiencing anxiety, they may drool excessively, pant heavily, pace, or display other signs of distress.

Identifying the cause of anxiety and implementing appropriate measures, such as behavior modification techniques or the use of calming aids, can help alleviate signs of anxiety.


7. Excitement

Excitement, whether it’s due to the anticipation of a walk, playtime, or the arrival of guests, can trigger excessive drooling in dogs. While this type of drooling is generally harmless, keep an eye on your dog’s behavior to ensure it doesn’t escalate into anxiety or other behavioral issues.

English Mastiff drooling
Image Credit: GoDog Photo, Shutterstock

8. Heat Stroke

Dogs are prone to heat stroke, especially in hot weather or when left in a car without adequate ventilation. Excessive drooling, along with panting, weakness, and collapse, can indicate heat stroke, which is a medical emergency. Rapidly cool your dog and seek veterinary assistance immediately if you suspect heat stroke.


9. Motion Sickness or Nausea

Some dogs experience motion sickness during car rides or other forms of transportation, leading to drooling. If your dog becomes visibly anxious or nauseous when traveling, consult your veterinarian about potential remedies or medications that can help ease their discomfort.

american bulldog drooling in car
Image Credit: Maria Dryfhout, Shutterstock

10. Caustic and Toxic Agents

Ingesting toxic substances or coming into contact with caustic agents can cause excessive drooling as the body tries to eliminate or neutralize the harmful substance. It’s crucial to keep common household chemicals, plants, and medications out of your dog’s reach to prevent accidental ingestion.


11. Neurological Conditions

Certain neurological conditions, such as epilepsy or nerve damage, can cause drooling in dogs. If your dog displays other symptoms like seizures, muscle tremors, or abnormal behavior, consult your veterinarian for a proper diagnosis and treatment plan.

vet examines dog
Image Credit: SeventyFour, Shutterstock

12. Congenital Conditions

Uncommonly some dogs may have congenital conditions that can cause excessive drooling among other signs. Examples of these are hiatal hernias and portosystemic shunts. Consult your veterinarian if you suspect a congenital issue in your dog.


13. Viral or Bacterial Infections

Certain viral or bacterial infections, including rabies, can cause excessive drooling in dogs. Rabies causes other serious signs such as aggression, fever, disorientation, or paralysis.

Immediate veterinary attention is critical for suspected infectious diseases to protect your dog’s health and prevent the spread of contagious illnesses.

vet examining a border collie dog
Image Credit: antoniodiaz, Shutterstock

14. Response to Food

Some dogs may drool excessively when they smell or anticipate food. This reaction is usually harmless and stems from the dog’s natural instinct to salivate in preparation for eating.


15. Some Breeds Really Drool More Than Others

It’s important to note that certain breeds are more prone to drooling due to their anatomy and genetics. Breeds like Bulldogs, Bloodhounds, and Mastiffs are known for their slobbery tendencies. If you have one of these breeds, be prepared for some extra saliva!

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When Should You Take Your Dog to the Vet?

While some cases of excessive drooling may resolve on their own, it is crucial to know when to seek veterinary attention.

If your dog’s drooling is accompanied by other concerning signs, such as vomiting, diarrhea, lethargy, loss of appetite, difficulty breathing, or a sudden change in behavior, it’s best to consult a veterinarian promptly.

If your dog’s drooling is persistent, severe, or lasts longer than usual, it’s better to be safe and have them evaluated by a professional.

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Conclusion

Drooling in dogs can occur for various reasons, some of which are benign and others that may require immediate attention.

By familiarizing yourself with the potential causes of excessive drooling and understanding your dog’s overall health and behavior, you can better determine when to seek veterinary assistance.

Remember, your dog relies on you to advocate for their well-being, so stay attentive, be proactive, and keep their slobbery smiles shining bright!


Featured Image Credit By: Michal Ninger, Shutterstock

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