Abstract
Left hepatic vein opening to the left atrium was observed in a 36-day-old Japanese black calf. Two middle hepatic and a right hepatic veins opened normally to the posterior vena cava. The heart was associated with absence of the coronary sinus, anomalous opening of the great cardiac vein to the left atrium, atrial septal defect, large two ventricular septal defects and straddling right atrioventricular valve. The embryonic development of the left hepatic venous connection to the left atrium was discussed.