A 1.5-year-old, female domestic rabbit was diagnosed with uterine torsion accompanying hydrometra ofthe right uterine horn and pyometra of the left horn. The exploratory laparotomy revealed the torsion of bilateral uterinehorns in the region of the uterine cervix. No growth was detected in fluid collected from the right horn of the uterus;however, Gram-positive micrococcus and bacilli were cultured from the left horn. The pathophysiology of thesimultaneous occurrence of these disorders was suspected considering that abdominal distension progressed over 4months and the rabbit’s condition deteriorated abruptly within 2 days, hydrometra was the initial disease and theninfection to the left uterine horn and torsion developed later due to the large volume of fluid within the uterus. Thisreport is the first case showing uterine torsion accompanying hydrometra and pyometra in each uterine horn