Bugs Bunny as the "Rabbit Season/Duck Season" trilogy and are famous for originating the "historic" rivalry between Bugs and Daffy Duck. Jones' classic "What's Opera, Doc?" (1957), casts Bugs and Elmer Fudd in a parody of Richard Wagner's "Der Ring des Nibelungen". It was deemed "culturally significant" by the United States Library of Congress and selected for preservation in the National Film Registry in 1992, becoming the first cartoon short to receive this honor. In the fall of 1960, ABC debuted the prime-time television program "The Bugs Bunny Show". This show packaged many of the post-1948 Warners cartoons with newly animated wraparounds.
Development of Bugs Bunny mouth, and his ears were changed slightly as well. It is worth noting, however, that "Patient Porky" (September 14, 1940) featured a cameo by this prototype Bugs Bunny. The cartoon was so successful that WB decided to keep him on as a recurring character, eventually becoming the studio's most popular cartoon character. The character's name, previously only used on model sheets, became the official all-purpose name as well, with one modification: the apostrophe was dropped from his first name (now pronounced "bugs" rather than "bugs-es"). A title card saying "featuring Bugs Bunny" was slapped onto "Elmer's Pet Rabbit" after initial