An 8-month-old spayed female Wheaten Terrier was evaluated because of a mass protruding from the urogenital tract. The owners associated the mass with the dog's reluctance to maintain a sitting posture. Three months prior to evaluation, the dog was neutered. At that time, the reproductive tract appeared abnormal and was submitted for histologic evaluation. Results indicated that the uterus was normal; however, the gonads were identified as testes. The testes were devoid of germ cells; ovarian structures were absent. On the basis of those findings, the dog was considered as a male pseudohermaphrodite.