"Prince Alex", a 1.5 year-old intact male Shetland sheepdog, presented to Cornell for evaluation of bilateral nasal discharge unresponsive to medical therapy. He was diagnosed with an oronasal fistula and nasal turbinate destruction via a CT scan. Rhinoscopy revealed the presence of fungal plaques; and histopathology and culture confirmed the Aspergillus, as well as an antibiotic-resistant Pseudomonas. After supportive care and treatment for his fungal and bacterial rhinitis, "Prince Alex" underwent the placement of a palatal obturator to occlude his oronasal fistula. This paper will discuss the major points of the case, to be followed by a brief outline of the common causes of oronasal fistulas. The various methods of repair will be described, and the reasons for choosing a palatal obturator in this case will be explained. Lastly, the method of placement of a palatal obturator and the necessary follow-up care will be outlined.