What was Kim Hunter’s role in the original 'Planet of the Apes' films?

Kim Hunter (born Janet Cole, November 12, 1922 – September 11, 2002) was an American film, theatre, and television actress. She won both an Academy Award and a Golden Globe Award, each as Best Supporting Actress, for her performance as Stella Kowalski in the 1951 film 'A Streetcar Named Desire'. Decades later, she was nominated for a Daytime Emmy Award for her work on the long-running soap opera 'The Edge of Night'. She also portrayed the character of chimpanzee Zira in the first three installments of the original film adaptation 'Planet of the Apes'.

Zira is a chimpanzee psychologist and veterinarian, who specializes in the study of humans, in the novel and subsequent movie series Planet of the Apes. Zira was played in the first three Apes movies by actress Kim Hunter.