The symptoms of this syndrome depend on the severity of the deterioration. Usually, the dog will have difficulty breathing, especially during exercise. The pet appears to tire easily as it becomes short of breath. Dogs with a collapsing trachea will generally cough as if trying to clear the airways and occasionally this cough will sound like a goose honk. In very severe cases, the tongue and gums will appear blue as breathing becomes restricted.
Activity is generally limited because the ability to breathe deeply when exercising is hindered.
Left untreated, the restricted air flow can put undue stress on the heart and lungs as they try to compensate for the inability to breathe properly. Obese dogs are at greater risk than others. Depending upon the severity of the condition, medications will help. Veterinarians usually prescribe drugs to help dilate the airways. The coughing is controlled by cough suppressants such as Torbutrol.