SUMMARY Hermaphroditism and pseudohermaphroditism are relatively rare phenomenon in dogs. A possible case of male pseudohermaphroditism is described here. The studied dog showed ambiguos genitalia pseudohermaphroditism and was thought to be a female until four months of age. The X-chromatin in cells of buccal smears was negative, and the karyotype of peripheric blood had 78,XY, chromosomes. Radiological analysis revealed an urethra with feminine course and the presence of one piriform structure compatible with cranial vagine, that could explain the urynary incontinence. Concerning the ethological aspects, this dog showed male behavior.
intersexuality; pseudohermafroditism; ambiguos genitalia; urynary incontinence
