Uterus didelphys in an ewe as a cause of dystocia

A 2-year, full-term ewe was presented for straining and failure of parturition to progress. Vaginal delivery was achieved but resulted in a full thickness cervicouterine tear secondary to abnormal reproductive tract anatomy. Ewe was euthanized and determined to have uterus didelphys via field necropsy. This incidental finding demonstrated that pregnancy can be carried to term despite substantial anatomic abnormality, highlighting the importance of a thorough reproductive tract examination prior to assisted delivery.