2. Barking
Just as humans talk in our sleep, so do dogs. This is why you may sometimes observe your Shih Tzu barking. This isn't necessarily a bad thing. They may just be communicating in their dreams, and it projects itself outward in the form of a bark.
3. Muscle Spasms
While your Shih Tzu is dreaming, it may have muscle spasms. In most cases, this is completely normal. If, however, you notice that your dog has other symptoms and has spasms while awake, a vet visit may be in order.
