Extraordinary video footage shows how two scientist parents attempted to raise their infant son alongside a chimpanzee as part of a bizarre nature versus nurture experiment in 1931. Psychologists Winthrop and Luella Kellogg conducted the study on their ten-month-old son Donald and a seven-month-old chimp called Gua at their Florida home. The couple were attempting to establish if it was possible to educate an ape and teach them to communicate as a human. snip Donald took to walking around on all fours, dragging his knuckles like an ape. He would often start biting people when he became aggressive and he...