Bedtime for Bonzo is a 1951 American comedy film directed by Fred de Cordova and starring Ronald Reagan, Diana Lynn, and a chimpanzee named Peggy 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.A sequel was released titled Bonzo Goes to College (1952), but it featured none of the three lead performers from the original film. Peggy, who had also appeared in My Friend Irma Goes West (1950), died in a fire on March 4, 1951, so another chimpanzee was hired for the second film. Reagan did not want to appear in the second film as he thought that the premise was unbelievable.