Short faced (brachycephalic) breeds of dogs tend to have a relatively long soft palate. This can partially cover the epiglottis at times other than swallowing interfering with breathing and triggering coughing episodes. In severe cases the soft palate may be sucked onto the epiglottis completely obstructing the airway, only releasing when the dog loses consciousness. Episodes are often triggered by excitement or exercise. Conditions which cause swelling in the throat such as infection may also make the condition worse. These dogs commonly snore when sleeping.

Treatment is usually reserved for more severe cases and involves surgical shortening of the soft palate.