Bedtime for Bonzo is a 1951 American comedy film directed by Fred de Cordova and starring Ronald Reagan, Diana Lynn, and a chimpanzee named Tamba as Bonzo. Its central character, psychology professor Peter Boyd (Reagan), tries to teach human morals to a chimpanzee, hoping to solve the "nature versus nurture" question. Boyd hires Jane Linden (Lynn) to pose as the chimpanzee's mother while he plays father to it and uses 1950s-era child-rearing techniques.