Bedtime for Bonzo

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. Plot Valerie, a college dean's daughter, is engaged to the dean's colleague Peter, a psychology professor. When the dean discovers that Peter is the son of a former criminal, he forbids the marriage, declaring Peter's blood to be tainted, in line with his strong belief in heredity as an influence on character. As Peter believes equally strongly in the opposite theory of environment, he aims to prove that he can raise a chimpanzee as one would a human child in a law-abiding household. After acquiring a chimpanzee named Bonzo from an animal handler, Peter recruits a nanny named Jane, and they act as Bonzo's parents, teaching him good habits. Bonzo inadvertently turns on the vacuum cleaner and leaps out of the window in alarm, climbing a tree, where Jane follows him. Bonzo jumps back into the house and dials the emergency services as he has been instructed to do, but he then returns to the tree and removes the ladder, leaving Jane stranded until Peter can help her. Valerie arrives on the scene just as the firemen are helping them down and misreads the situation, angrily returning Peter's ring.