It is rumored that the very first version of a blood transfusion occurred when Pope Innocent VII was on his deathbed, and made to drink the blood of little boys. Needless to say, this didn’t turn out well for the pope or the boys. In the 1690s, Richard Lower pioneered blood transfusions between animals. He then started experimenting with transfusing the blood from dogs to human patients.
Originally published on Daily Curiosity