The isolated head of a dog

What could be more horrific than creating a two-headed dog? What about keeping the head of a dog alive away from its body? In 1928, Soviet physician Sergei Brukhonenko invented a peculiar heart-lung machine that he called an "autojector," which successfully kept the severed head of a dog alive. He displayed one of his living dog heads at an international scientific conference. To prove his achievement, he did a series of tests, including shining a light in dog’s eyes to make it blink and hitting the table with a hammer to make the head react.