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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.

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Welcome to The Dog Visitor Q&A [2022], where you can ask questions and receive answers from other members of the community.
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