Updated at: 11-01-2022 - By: petstutorial

The dog’s behavior is often bizarre. It is possible that your dog is running around with its tail, or trying to capture insects. You might also notice that your dog’s mouth opens and closes his mouth repeatedly. It’s quite a strange thing to observe and could make you feel worried.


Why does my dog keep opening and closing his mouth?

You glance at your dog and you notice they are shutting and opening their mouths. What can be the reason for this? Do you need to be worried? There are numerous causes your dog may be closing and opening their mouth. Certain of them could be concerning.


The first sign of distemper is usually an irritant that is discharged of the eye. If the illness continues it can cause nasal discharge, fever and coughing can occur. Your dog will become exhausted and might experience vomiting or nausea.
In the end, the disease can attack your nervous system. It can result in the mouth to open or closing and even paralysis.


Seizures are one of the most common neurological conditions in dogs. Dogs can suffer from uncontrolled muscle movements. The result is usually convulsions. This can also lead to teeth grinding , or the jaw closing and opening.
Seizures can be caused by epilepsy or other conditions, including organ failure. Grand mal seizures can be dramatic and can cause whole body convulsions, as well as the loss of awareness. Petit mal seizures tend to be more subtle. The symptoms can include looking at the ceiling at the mouth, movements of the mouth and tremors. They can also cause convulsions in one part within the body.

Gastrointestinal Problems

Gastrointestinal disorders can affect the mouth movement of your pet to change as well. Esophagitis, gastritis and ulcers may cause discomfort for your dog. This can lead the dog to move their mouth or grind their teeth in an attempt to alleviate discomfort or to provide a comfort method.

White Dog Shaker Syndrome

The white dog shaker disorder is called generalized tremor. The name implies that it is most commonly seen in white dogs, especially smaller breeds. However, despite the name it can be a problem for all breeds, sizes and color.
Shaker syndrome can cause tremors and shaking. They can occur in only one part of the body or all over the body. They may be minor or affect the dog’s ability to function. The majority of dogs suffering from shaker syndrome can be healthy in many other aspects.
The condition usually manifests between one to two years of age. The symptoms get worse during times when the pet is anxious or upset. Symptoms usually disappear while the dog is asleep. The cause of shaker-syndrome isn’t fully understood. It can be treated using the use of steroid medications.


Hypothermia causes your dog’s body temperature to drop too low, usually from exposure to cold temperatures. Similar to humans, dogs shake when they feel cold to warm up their bodies.
When your pet is feeling cold shaking is normal. It is common to see this happen in indoor colder temperatures especially for short, small haired breeds. It’s like getting chills and then experiencing shivering. The shivering could cause people in their mouths and mouths to shut and then open.


Why does my dog keep opening and closing his mouth after eating?

If your dog has trouble opening or closing their mouths after eating there are several possibilities. They can range from harmless such as something that is lodged in their mouths and even life-threatening ones such as the possibility of choking.


Choking is a big worry for many pet parents. It is possible to choose what you feed your dog with care in order to stay clear of choking hazards. But, choking could occur when you feed your dog any food or item that your dog is exposed to.
If a dog is choked and breathing is difficult, they are unable to breathe. They close and open their mouths to draw more oxygen. It is possible to hear gagging, noises of choking, or none at all.
Choking requires immediate action. Keep the dog’s head upside-down, or raise their hind legs to the point that their head is down. You can also hit your dog by putting your fingers of your hands between shoulder blades. This is the dog variant of the Heimlich maneuver.

Object in Mouth

Your dog could be carrying a foreign object inside their mouth. The most frequent and least worrying is the case where your dog has an object of food in their teeth. Your dog can feel the food, and they are open and shutting their mouth in an effort to remove the food.
If your dog chewed on a foreign object and pieces of the object might be stuck in its mouth or in its teeth.

Dental Problems

Dental issues can also result in your dog having to close and open their mouths after eating. If they suffer from gum or tooth pain eating food can make it more painful. They might be closing and opening their mouths to ease the discomfort.


Bloat is a life-threatening condition that comes suddenly. Air is trapped in the stomach. The stomach begins to ferment, which results in an increase in pressure. When pressure is increased the stomach expands to block the entry and exit.
Bloat is life-threatening if not treated quickly. The exact cause for bloat remains unknown, however, risks include large breed dogs , and eating food too fast.
The symptoms of bloat are the inability to vomit, poop or burp. The tendency to urinate without producing vomit is not uncommon. Dogs with bloats will be bloated and will clearly be experiencing a lot of discomfort.
Bloat causes your dog to open and close their mouth because they are having difficulty breathing. It is also possible that they move their mouths because they’re trying to go to the bathroom, but the stomach is blocked.


When they feel nausea or want to throw up.

The dog can also display this behavior (opening the mouths frequently) whenever they experience nausea. It is because, just as us when you are about to vomit their body produces a huge amount of saliva over the period. This saliva is intended to shield their teeth from the acidity of the food they will soon throw up.
The usual conclusion is our dog spit out the unpleasant food items or poisonous substances, and then continuing to live their lives. However, if they are unable to stop open and shutting their mouths even after throwing it up, then the issue is a different issue.

What to do about my dog opening and closing his mouth?

It will differ greatly depending on the reason why your dog is closing and opening their mouths. Let’s take a look at possible causes and possible solutions.


If the dog you are caring for is having trouble breathing then you must act fast. Keep them upside down or elevate their back legs until that their head is downwards. This will assist in dislodging the object. You can also strike them with your fingers between your shoulder blades that works similarly to the Heimlich move for humans.
When the situation is settled it is possible that they will need to visit a veterinarian. The vet will ensure that there isn’t been any harm to the esophagus, or mouth.

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