In this study 59 domestic animals with testes, penis and prepuce diseases were attended to the Department of Surgery, Faculty o( Veterinary Science, The University of Selçuk between the period 1995-2001. These diseases were involved orchitis, hydrocele, hematocele, hernia scrotalis, balanitis, posthitis, balanoposthıtıs, paraphimosis, penis injuries, penis neoplasia, urethral perforation and urethral dilatation In this retrospective study, both clinical finding and the results of treatments of testes, penis and prepuce diseases in domestic animals were evaluated and discussed.