What's Opera, Doc? is a 1957 American animated cartoon short in the Merrie Melodies series, directed by Chuck Jones for Warner Bros. Cartoons. The Michael Maltese story features Elmer Fudd chasing Bugs Bunny through a parody of 19th-century classical composer Richard Wagner's operas, particularly Der Ring des Nibelungen (The Ring of the Nibelung), Der Fliegende Holländer, and Tannhäuser. It borrows heavily from the second opera in the "Ring Cycle" Die Walküre, woven around the standard Bugs-Elmer conflict.