Scientists study 1st 'two-headed' deer to be fully delivered
US-based researchers have studied the first known conjoined deer to be fully delivered, found in May 2016 in Minnesota. Lab tests confirmed that the deer were delivered stillborn and had a shared liver besides two hearts that shared a single pericardial sac. Only two cases of conjoined twins have been found in white-tailed deer, however, both were not delivered successfully.