Oronasal fistula is an acquired communication between the oral and nasal cavities. The most common cause of an oronasal fistula in dogs is advanced periodontal disease.

Oronasal fistula is an acquired communication between the oral and nasal cavities. The most common cause of an oronasal fistula in dogs is advanced periodontal disease.
Oral examination should be a part of every physical examination in dogs and cats. A detailed oral and dental examination can only be performed with the animal under general anaesthesia.