
Blood Transfusions with Animal Blood: Believed to Cure Various Ailments
Blood transfusions with animal blood were used in the past as a medical treatment for various ailments, despite being ineffective and often dangerous. The first recorded attempt at a blood transfusion was performed in the 17th century, but it was not until the 19th century that animal blood transfusions began to be used more widely. At the time, it was believed that animal blood had special properties that could help cure human illnesses. The most commonly used animal for blood transfusions was the sheep, as its blood was thought to be similar to human blood.

In the mid-17th century, the first recorded successful blood transfusion occurred in England when physician Richard Lower kept dogs alive by transfusing blood from other dogs. Two years later, in 1667, Jean-Baptiste Denis in France and Richard Lower in England separately reported successful transfusions from lambs to humans. However, these transfusions often caused severe reactions in patients, such as fever, chills, and sometimes death. It was not until the discovery of blood types and the development of proper blood transfusion techniques that the practice of using animal blood for human transfusions was abandoned in favor of human blood transfusions.