A 3-month-old Schnauzer was presented with congenital defects of the secondary palate.On the clinical examination, coughing, sneezing, drainage of nasal discharge from the external nares and poor growth were found.Vital signs and results of blood examination were within normal ranges.Thoracic radiography revealed mild pneumonia in the right lung lobes.In a puppy suffering from cleft palates, a palatal prosthesis was applied to the hard palate in order to protect the surgical wound, because a routine surgery was not successful.A palatal prosthesis was applied and held in place using the instant glue and plastic bands to protect the surgical wound following the third repeated surgery.Although a small oronasal fistula still remained, there was no functional defect.This prosthesis was easy to apply and helpful to protect the surgical wound.In addition, this implant could be placed or adjusted without or sedation/anesthesia.