Rock-a-Doodle is a 1991 live-action/animated musical comedy film produced by Sullivan Bluth Studios and Goldcrest Films. Loosely based on Edmond Rostand's 1910 comedy play "Chantecler", "Rock-a-Doodle" was directed by Don Bluth and written by David N. Weiss. The film features the voices of Glen Campbell, Christopher Plummer, Phil Harris (in his final film role before his retirement from acting, and his death in 1995), Charles Nelson Reilly, Sorrell Booke, Sandy Duncan, Eddie Deezen, Ellen Greene, and Toby Scott Ganger (in his film debut). The film was released in the United Kingdom on 2 August 1991 and in the United States and Canada on 3 April 1992.