A presumably female intact French bulldog of ten months old was presented to the Faculty of VeterinaryMedicine of the Ghent University with an enlarged clitoris and purulent vaginal discharge. It wassuggested to remove the enlarged clitoris as to avoid further irritation and to perform a gonadectomyat the same time, since the owners were not planning to breed with the dog. An abnormal reproductivetract was observed during surgery. A normal uterus was present, but both gonads resembled testes.Histologic examination of the resected tissues confirmed the presence of bilateral testes in combinationwith a normal uterus. Karyotyping and molecular analysis of the SRY-gene resulted in a 78,XX SRYnegativekaryotype. The French bulldog was diagnosed with a 78,XX SRY-negative testicular disorderof sex development (DSD).