Collapsed Trachea 

The trachea ( or windpipe) of a Yorkie  tends to be somewhat  weak.  Aging or physical trauma to the windpipe may cause the trachea to collapse in one or more areas.   One reason you should never use a collar with a leash for your Yorkie.

Symptoms of a collapsed trachea are a dog coughing hard, especially after exercise.  This coughing becomes worse as time passes, especially in an older dog.  A collapsed trachea can also be caused by the tube that a veterinarian may use for administering anesthesia needed for certain procedures.

The only treatment for a collapsed trachea is surgical.  If you are concerned that your Yorkie has a collapsed trachea, consult with your veterinarian for options.