Of course, the chimpanzee donor died immediately.

VIVISECTOR DEAD

Heart transplant pioneer dies at 84

Dr. James Hardy braved a storm of criticism in 1964 when he pioneered the world's first heart transplant — chimpanzee to human — at the University of Mississippi Medical Center....

Hardy's surgical team at the University of Mississippi Medical Center transplanted the heart of a chimpanzee into a dying man. The patient lived for 90 minutes following the surgery....