Vladamir Demichov was a pioneering Russian transplant surgeon who created the field of transplantology and performed the first artificial heart transplant, influencing the surgeon who performed the first human heart transplant. Through his detailed note-taking and step-by-step documentation of experiments, especially two-headed dog experiments, Demichov established the foundations of organ transplant science and guaranteed replicable results, creating fundamental knowledge of veins and arteries that allows life-saving organ transplants today.