What Causes Older Dogs to Cough?

* Heart disease. This is the most common cause of coughing in older dogs. As the heart ages, it becomes less efficient at pumping blood. This can lead to a buildup of fluid in the lungs, which can cause coughing.

* Kennel cough. This is a respiratory infection that is common in dogs that are housed in close quarters, such as kennels or shelters. Kennel cough can cause coughing, sneezing, and nasal discharge.

* Collapsing trachea. This is a condition in which the trachea (windpipe) collapses when the dog inhales. Collapsing trachea can cause coughing, difficulty breathing, and wheezing.

* Lung disease. This can be caused by a variety of factors, such as pneumonia, bronchitis, and lung cancer. Lung disease can cause coughing, shortness of breath, and wheezing.

* Allergies. Allergies can cause coughing, sneezing, and nasal discharge.

* Cancer. Cancer can affect any part of the body, including the lungs and trachea. Cancer can cause coughing, difficulty breathing, and weight loss.

If your older dog is coughing, it is important to see a veterinarian to determine the cause and receive appropriate treatment.