Canine transmissible venereal tumour is a type of neoplasm that can be transmitted through sexual contact in dogs. The occurrence of secondary oral canine transmissible venereal tumour is well documented in dogs; however, primary oral canine transmis- sible venereal tumour is uncommon. This report presents a rare case of a 2.5-year-old, neutered, male Siberian husky dog with an ulcerated mass on the soft palate that was undetected by clinical and radiological examinations, which was later diagnosed as a canine transmissible venereal tumour based on cytology without any genital manifesta- tions. Chemotherapy with vincristine sulfate (5 weeks) resulted in complete recovery of the tumour without recurrence after 6 months. Based on our findings, we emphasise the importance of considering canine transmissible venereal tumour as a possible cause of extragenital masses even in neutered dogs.

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