Collapsing trachea
If you have a small dog that coughs every time it gets excited or pulls on its lead it may be suffering from tracheal collapse. Tracheal collapse results in narrowing of the airway and, if left untreated, can progress over time causing severe consequences for your pet. If your dog develops a cough that does not get better after 2 weeks you should make an appointment to see your veterinarian.
Trachea: stent in position (fluoroscopy) - radiograph Image©Simon Tappin