* AccentDepundent: Once when Courage asked for help regarding a mummy, Computer thought he meant mommy, since "mummy" is the British way of writing it.
-->'''Computer''': If your mummy is coming for a visit, then give her flowers, [[CatchPhrase you twit.]]
-->'''Courage''': ''(frowns, retypes)''
-->'''Computer''': Oh, ''a mummy'', that's much worse.
* AdoredByTheNetwork: Cartoon Network decided the pilot should become its own series, and the show has spanned four entire seasons without a single threat of having it yanked off the air, despite its scary nature. This show is also one of the few cancelled originals to still air on a regular basis.
** After the show completed its four-season, 52-episode run (typical for most cartoon series on cable networks such as Cartoon Network and Nickelodeon), many fans petitioned for a continuation, which both the network and John R. Dilworth considered, but ultimately, Dilworth decided not to continue with any further episodes or seasons. On the same token, a (possibly theatrical) movie was confirmed to be in the works, however, it never came to fruition.
* ApprovalOfGod: John Dilworth doesn't deny a single one of the WildMassGuesses made about the show, as he wants to leave it just as open to interpretation as any other work of art.
* CowboyBebopAtHisComputer: The instrument in the last episode is a ''bugle'', not a trumpet, as it's commonly assumed.
* ExecutiveMeddling: The reason behind Courage's limited speech and constant babbling and screaming after the first season.
** Unlike some examples, this actually wasn't a detriment to the show creatively; [[https://www.reddit.com/r/IAmA/comments/33s9p6/im_john_dilworth_creator_of_courage_the_cowardly/cqnyizh?context=3 John R. Dilworth and the production crew preferred the change.]]
* FanNickname: The "Perfect Trumpet Thingy" or "Eustace's Trumpet" for the blue ''[[EldritchAbomination thing]]'' in the first of Courage's nightmares in "Perfect" and "Violin Girl" for the DemonHead in "Courage in the Big Stinkin' City".
** Courage, Muriel, and Eustace together as a group is usually called "the Bagges" or "the Bagge family" by fans.
* HeyItsThatVoice: Contrary to popular belief, Music/RingoStarr was ''not'' the voice of the Duck Brothers. It was actually an actor named Will Ryan[[note]]Although in an odd twist of fate, Thea White, the voice of Muriel, is married to Pete Best, the drummer whom Starr replaced in Music/TheBeatles.[[/note]]. Similarly, Creator/TimCurry was not the voice of Goose God, rather it was series regular Paul Schoeffler.
** Eustace's mother is the original dub voice of Anime/AstroBoy.
** Arnold Stang (WesternAnimation/TopCat) provided several voices for the show including the Precious Wonderful Adorable Loveable Duckling.
** Fusilli is done by perennial favorite voice actor from the 1980s, the 1990s, and beyond: Creator/JimCummings.
** Muriel's [[TimeShiftedActor younger self]] was voiced by KathSoucie.
** Evil Weevil is [[Creator/TonyJay Claude]] [[Disney/TheHunchbackOfNotreDame Frollo]].
** [[Anime/SpeedRacer Speed Racer]] not only serves as a voice director for the series, but did additional voices for the show as well. Among his roles were Benton Tarentella.
** Others that have done additional voice work for the show: [[Videogame/JakAndDaxter Daxter,]] [[WesternAnimation/GodTheDevilAndBob The Devil,]] [[Series/DreamOn Toby Pedalbee,]] [[Literature/TheBerenstainBears Papa Q. Bear,]] [[WesternAnimation/DoraTheExplorer Abuela]] and [[WesternAnimation/ThunderCats Pumyra.]]
** The three ninja guys are [[VideoGame/MonkeyIsland [=LeChuck=]]], [[WesternAnimation/SpiderManTheAnimatedSeries The Beyonder]], [[Literature/CliffordTheBigRedDog Mr. Bleakman]], [[WesternAnimation/{{Bonkers}} Police Chief Kanifky]], and [[WesternAnimation/JusticeLeague Simon Stagg]].
** Kitty is also [[Disney/SleepingBeauty Princess Aurora's mother.]]
** In ''The Fog of Courage'', Eustace is voiced by Creator/WallaceShawn.
* KeepCirculatingTheTapes: Despite reruns popping up on Cartoon Network and Boomerang every now and again, the show was largely relegated to the modern-day equivalent of tape-trading - Website/YouTube - until 2010, when [[http://tvshowsondvd.com/news/Courage-Cowardly-Dog-Season-1/13573 the first season of the show was confirmed for a DVD release.]]
*** And now as of 2014 [[http://www.tvshowsondvd.com/news/Courage-Cowardly-Dog-Season-2/20069 Season 2 is set to be released in October, just in time for Halloween.]]
** You can buy the entire series on iTunes.
*** The pilot, The Chicken From Outer Space, partly plays this straight and partly averts it. It's not on the Season 1 DVD, but John R Dilworth sells it through his online store.
* RecycledScript: Season 3's "Curtain of Cruelty" has a similar plot to Season 2's "The Tower of Dr. Zalost", with anger and hostility infecting the Nowhere townspeople instead of sadness and depression.
* ScrewedByTheLawyers: [[http://i3.kym-cdn.com/photos/images/original/000/720/714/bdc.png As explained here]], the episode "The Mask" got the show screwed when Cartoon Network came under heat from [[MoralGuardians angry parents]] who believed the episode contained lesbian undertones (in all fairness, they probably weren't wrong) and threatened to sue Creator/CartoonNetwork unless they cancelled the show. Many at the network have admitted that ''Courage'' was [[AdoredByTheNetwork their favourite of all Cartoon Network series]], saying if they had any real choice they would have kept it running. Whatever the case, the show got to air the rest of its final season.
* TheOtherDarrin: Lionel Wilson was replaced by Arthur Anderson as the voice of Eustace in the middle of the third season after the former died; despite this, audio of Wilson was still used when Eustace said his more common lines, laughed, or screamed. In the 2014 special, Anderson is replaced by none other than Creator/WallaceShawn.
* TalkingToHimself: WillRyan must have had a lot of fun arguing with himself throughout "The Duck Brothers".
* WhatCouldHaveBeen:
** So many fans were saddened by the show's ending that an online petition was formed, and sent to both Cartoon Network and Stretch Films, asking for a continuation. Because of this, a fifth season of the series ''was'' considered, but ultimately never came to be.
** On the same token, because of the series' popularity with fans, a movie was also up for consideration (whether theatrical or TV was never made clear), but nothing ever came out of it due to the poor box office performance of ''Film/ThePowerpuffGirlsMovie''..
** Series composer Jody Gray wanted to release a CD soundtrack of the show's music scoring and songs, and even asked fans to submit requests of specifics they'd like to be included in the soundtrack. Once again, nothing ever materialized.
** Way back when, Dilworth was pitching his indie short ''The Dirty Birdie'' to Hanna-Barbera for the ''What a Cartoon!'' program, but they deemed the short unsuitable for TV, and Dilworth pitched what was to be his next indie effort ''The Chicken from Outer Space'' in order to receive funding for it, and the rest was history.
** The 2014 short "The Fog of Courage" was part of an idea by John R Dilworth and Cartoon Network to revive the series, but the network changed its mind to pursue bigger projects (though they idea of a revival still lives on!).
* TheWikiRule: Courage The Cowardly Dog Wiki, found [[http://courage.wikia.com/wiki/Courage_The_Cowardly_Dog_Wiki here]].