Respiratory diseases are very common and the clinical signs are usually readily apparent. However, chronic diseases, particularly affecting airways and lungs, are difficult to diagnose without analysis of biopsy material. Conditions affecting the nasal cavity are not that common, but some may become chronic and difficult to treat. Some diseases, such as tracheal collapse, may require surgery. Alterations in breathing patterns such as difficult or painful breathing, are common in cardiopulmonary diseases. Owners are often surprisingly unobservant of respiratory difficulties until the disease process is quite advanced.
Extreme brachycephalic breeds, such as the bulldog, are prone to Airway Obstruction Syndrome