What illness in a dog would cause it to walk in large circles fairly continuously?

My shih tzu dog gets up walks around in a circle of about 10 feet for a few minutes, stops, reverses it's direction for a few more minutes, and then lays down frequently with it's lower jaw quivering. Does anyone here have any idea what would cause this?

    What illness in a dog would cause it to walk in large circles fairly continuously?

    My shih tzu dog gets up walks around in a circle of about 10 feet for a few minutes, stops, reverses it's direction for a few more minutes, and then lays down frequently with it's lower jaw quivering. Does anyone here have any idea what would cause this?...
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    • What illness in a dog would cause it to walk in large circles fairly continuously?

      What illness in a dog would cause it to walk in large circles fairly continuously? Other Pet Discussions
      My shih tzu dog gets up walks around in a circle of about 10 feet for a few minutes, stops, reverses it's direction for a few more minutes, and then lays down frequently with it's lower jaw quivering. Does anyone here have any idea what would cause this?

      What illness in a dog would cause it to walk in large circles fairly continuously?

      What illness in a dog would cause it to walk in large circles fairly continuously? Other Pet Discussions
    • Circling prior to laying down is seen in just about all dogs. Possibly a throw back to their wild ancestors in an effort to 1) trample down the area for a softer bed; 2) check for possible hidden critters in the grass; 3) mark the area out as their sleeping quarters. These are a few of the reasons speculated by dog experts. But, since there's still a bit of debate about these reasons, not sure if any or all are accurate. However, this is a very NORMAL behavior.But, the bottom jaw quivering is not part of that behavior. If the dog is elderly or ill, it could be from lack of muscle control. But, some dogs also "chatter" their teeth when they are exited, or very interested in a certain smell. If this behavior is not associated with any other health issues (i.e. vomiting, diarrhea, lack of appetite, seizure activity, weight loss, etc.) I wouldn't be too concerned.