History Trivia / HortonHearsAWho

* ThrowItIn: The script called for Ned to simply say "No" when his wife asks if he believes that there's a giant elephant in the sky. Creator/SteveCarrell ad libbed the elongated awkward laugh he makes beforehand.

* HeyItsThatVoice: In the 1970 special, both Horton and the narrator are [[Disney/PeterPan Captain Hook]], and the Kangaroo is [[WesternAnimation/LooneyTunes Granny]] ([[Creator/JuneForay among many, many others]]).
** In the 2008 film, Creator/JimCarrey is Horton, [[Series/TheOfficeUS Michael]] [[Creator/SteveCarell Scott]]/[[WesternAnimation/DespicableMe Gru]] is Ned.
** And Kangaroo is [[Film/{{Annie|1982}} Miss Hannigan]], which ''certainly'' [[AdaptationalVillainy would explain a lot...]]

* TheOtherDarrin: The 1970 special is very inconsistent in voicing background characters. This is most notable in the [[GossipyHens "Mrs. Toucanella"]] number, where the birds seem to have different voices every line.

* DoingItForTheArt: Let's just say Creator/BlueSky knew exactly what they were doing when they decided to adapt a book by one of ''the'' most beloved children's book authors of all time.

* ShoutOut: Several in TheMovie to various Dr. Seuss works.
** One Who has a blue hat similar to the one worn by Literature/TheCatInTheHat, as well as a few of The Cat's mannerisms (including a smaller version of himself underneath his hat).
** The Mayor and his family eat Literature/GreenEggsAndHam for breakfast.
** The city council seems to consist of [[Literature/HowTheGrinchStoleChristmas Grinches]].
** Rudy's imaginary clover friend is named "Thidwick", a refrence to Thidwick the Moose.
** The Mayor has a red fish as a pet, possibly a refrence to One Fish Two Fish Red Fish Blue Fish.
** One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr. Seuss]]]] himself (specifically, the one of Ned's father)!

* HeyItsThatVoice: In the 1970 special, both Horton and the narrator are [[Disney/PeterPan Captain Hook]], and the Kangaroo is [[WesternAnimation/LooneyTunes Granny]] ([[JuneForay among many, many others]]).
** In the 2008 film, [[Creator/JimCarrey Jim Carrey]] is Horton, [[Series/TheOfficeUS Michael]] [[Creator/SteveCarell Scott]]/[[WesternAnimation/DespicableMe Gru]] is Ned.

** The Mayor and his family eat GreenEggsAndHam for breakfast.

** One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr Seuss]]]] himself (specifically, the one of Ned's father)!

** In the 2008 film, [[Creator/JimCarrey Jim Carrey]] is Horton, [[Series/TheOfficeUS Michael]] [[SteveCarell Scott]]/[[WesternAnimation/DespicableMe Gru]] is Ned.

** And Kangaroo is [[Theatre/{{Annie}} Miss Hannigan]], which ''certainly'' [[AdaptationalVillainy would explain a lot...]]

* TheOtherDarrin: The 1970 special is very inconsistent in voicing background characters. This is most notable in the [[GossipyHens "Mrs. Toucanella"]] number, where the birds seem to have different voices every line.

!Movie Trivia:
* [[Creator/JimCarrey Jim Carrey]] is Horton, [[Series/TheOfficeUS Michael]] [[SteveCarell Scott]]/[[WesternAnimation/DespicableMe Gru]] is Ned.

** Rudy's imaginary clover friend is named "Thiddwick", a refrence to Thiddwick the Moose.

* [[JimCarrey Jim Carrey]] is Horton, [[TheOffice Michael]] [[SteveCarell Scott]]/[[DespicableMe Gru]] is Ned.

** One Who has a blue hat similar to the one worn by TheCatInTheHat, as well as a few of The Cat's mannerisms (including a smaller version of himself underneath his hat).

* [[JimCarrey Jim Carrey]] is Horton, [[TheOffice Michael]] [SteveCarell Scott]]/[[DespicableMe Gru]] is Ned.

** Rudy's imaginary clover friend is named "Thiddwick", a refrence to Thiddwick the Moose

* TheOtherDarrin: The 1970 special is very inconsistent in voicing background characters. This is most notable in the [[GossipyHens "Mrs. Toucanella"]] number, where the birds seem to have different voices every line.

* DevelopmentHell: BlueSky reported to have the rights to ''Horton Hatches The Egg'', but that was years ago, and so far nothing has come of it.

* HeyItsThatVoice: In the 1970 special, both Horton and the narrator are [[Disney/PeterPan Captain Hook]], and the Kangaroo is [[LooneyTunes Granny]] ([[JuneForay among many, many others]]).
* ShoutOut: Several in TheMovie to various Dr. Seuss works.
** One Who has a blue hat similar to the one worn by TheCatInTheHat, as well as a few of The Cat's mannerisms (including a smaller version of himself underneath his hat).
** The Mayor and his family eat GreenEggsAndHam for breakfast.

** Rudy's imaginary clover friend is named "Thiddwick", a refrence to Thiddwick the Moose
** The Mayor has a red fish as a pet, possibly a refrence to One Fish Two Fish Red Fish Blue Fish.

** The city council seems to consist of [[HowTheGrinchStoleChristmas Grinches]].

* TheOtherDarrin: The 1970 special is very inconsistent in voicing background characters. This is most notable in the [[GossipyHens" Mrs. Toucanella"]] number, where the birds seem to have different voices every line.

* TheOtherDarrin: The 1970 special is very inconsistent in voicing background characters. This is most notable in the "[[GossipyHens Mrs. Toucanella]]" number, where the birds seem to have different voices every line.

** One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr Seuss]]]] himself (specifically, the one of Ned's father)!

** One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr Seuss]]]] himself!

* ShoutOut: Several in TheMovie to various Dr. Seuss works. One Who has a blue hat similar to the one worn by TheCatInTheHat, as well as a few of The Cat's mannerisms (including a smaller version of himself underneath his hat), The Mayor and his family eat GreenEggsAndHam for breakfast, The city council seems to consist of [[HowTheGrinchStoleChristmas Grinches]], Rudy's imaginary clover friend is named "Thiddwick", a refrence to Thiddwick the Moose, and The Mayor has a red fish as a pet, possibly a refrence to One Fish Two Fish Red Fish Blue Fish. One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr Seuss]]]] himself!

* ShoutOut: Several in TheMovie to various Dr. Seuss works. One Who has a blue hat similar to the one worn by TheCatInTheHat, The Mayor and his family eat GreenEggsAndHam for breakfast, The city council seems to consist of [[HowTheGrinchStoleChristmas Grinches]], Rudy's imaginary clover friend is named "Thiddwick", a refrence to Thiddwick the Moose, and The Mayor has a red fish as a pet, possibly a refrence to One Fish Two Fish Red Fish Blue Fish. One of the portraits of past mayors was [[spoiler:[[AuthorAvatar Dr Seuss]]]] himself!