Bugs Bunny to appear in numerous Warner Bros. cartoons, making his last "Golden Age" appearance in "False Hare" (1964). He starred in over 167 theatrical short films, most of which were directed by Friz Freleng, Robert McKimson, and Chuck Jones. Freleng's "Knighty Knight Bugs" (1958), in which a medieval Bugs trades blows with Yosemite Sam and his fire-breathing dragon (which has a cold), won an Academy Award for Best Cartoon Short Subject (becoming the first Bugs Bunny cartoon to win said award). Three of Jones' films — "Rabbit Fire", "Rabbit Seasoning", and "Duck! Rabbit, Duck!" — compose what is often referred to
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