A dog’s jaw will quiver for a plethora of reasons. He can be excited to see you, smell or taste something, or be warding off a possible threat. He can be struggling with anxiety or oral pain. He could also have one of several disorders which cause quivering and tremors throughout his body.
What does a focal seizure look like in a dog?
Signs of a Simple Focal Seizure
Hallucinations (Your dog may bark, growl or moan at nothing, bite at the air or behave fearfully for no apparent reason) Signs of vision or hearing changes. Fur standing up. Dilated pupils.
Why does my dog open and close his mouth repeatedly?
Dogs may open and close their mouth repeatedly if they are choking. The dog is having difficulty getting enough air so the repeated open and closing of the mouth may indicate a dog’s attempt at trying to dislodge whatever foreign object is stuck in the dog’s throat.
While there are a lot of causes of lockjaw in pets, thankfully they are all relatively rare. Still, if you notice your pet having trouble picking up food or chewing, or if you see wasting away of the muscles on top of your pet’s head, trismus may be the reason, and it’s worth a trip to the vet.
Rarely, a quivering jaw may be a sign of poisoning or a serious neurological disorder. However, I’ll bet that your son’s puppy is simply going through a phase. I don’t think you should worry too much about this matter.
My son recently got a lab/pit bull mix who is 4 months old. He just called me & said the dog’s jaw sometimes quivers when she yawns or she will whine and then the jaw will start to quiver.
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Jaw quivering is especially common in older dogs (and people). In these individuals it usually is progressive but it almost never compromises quality of life.
Four-month-old puppies generally do not suffer from progressive jaw trembling. The shaking is more likely a transient issue that occurs as the puppy’s nervous system matures.