Trivia: There is no "That's all, Folks!" title card after the fade out. Just "The End" with white letters on a black background.
Trivia: This was the last appearance of Mammy Two-Shoes in a Tom and Jerry cartoon.
Trivia: When Elmer Fudd shouts "Smog!" whilst summoning the various forces of nature, he is voiced by Mel Blanc, not Arthur Q. Bryan. Blanc was chosen to do this line as his scream was considered to be better than Bryan's.
Trivia: The only Bugs Bunny cartoon to win an Academy Award.
Trivia: When we see Bugs Bunny for the first time, behind him on the ballpark fence there is a picture of a man with a gun and a detective hat with the words "Mike Maltese, Ace Dick" written nearby. Michael Maltese was the writer for this cartoon.
Trivia: The names in the opening credits are written in "Elmer Fudd-ese"'; that is, written the way Elmer would say them.
Trivia: As the gangsters speed by in their red car, you can see a billboard along the road advertising "Hotel Friz" - a reference to the director Friz Freleng.
Trivia: When Jerry phones the club and informs Mammy Two-Shoes about the party, she runs back home. You can see Mammy Two-Shoes' face for about two frames as she runs back to the house.
Trivia: At the beginning of the cartoon, we see Donald wearing an army hat instead of his usual sailor hat. This would be repeated in the other army-themed Donald Duck cartoons.
Trivia: The first short film to bill Laurel and Hardy as an official team.
Trivia: In the original cut, Yosemite Sam says after introducing himself, "I don't mean Mahatma Ghandi." After the death of Ghandi in 1948, the line was changed to "I ain't no namby-pamby." in the cartoon's re-release.
Trivia: This was Laurel and Hardy's final silent film.
Trivia: When Lambert head-butts the wolf off a cliff towards the end of the cartoon, the wolf yells a Goofy Holler.
Trivia: When we see Daffy's silhouette in the door of Duck Twacy's office at the start of the dream sequence, the silhouette of Daffy briefly changes twice into Dick Tracy's silhouette.
Trivia: "Pecos Pest" was the final Tom and Jerry cartoon produced by Fred Quimby before he went into retirement. From the next short, "That's My Mommy", until "Tot Watchers", all subsequent Tom and Jerry cartoons at MGM were produced and directed by William Hanna and Joseph Barbera.
Trivia: The first Warner Brothers cartoon in which Bugs Bunny "should have taken that left turn at Albuquerque."
Trivia: Casper the Caveman is a caricature of the American comedian Jack Benny.
Trivia: Mel Blanc, not Arthur Q. Bryan, voices Elmer Fudd's brief appearance.
Trivia: In the opening sequence, the announcer says that Stupor Duck is "more powerful than a steaming locomotive" and we see a barely functional train. What you actually see is a clip from the 1945 Warner Brothers cartoon, "Hare Trigger."
Trivia: This was the first time in which director Isadore Freleng was credited as "Friz" Freleng in a Warner Brothers cartoon.