[6] In 2000, it was deemed "culturally, historically, or aesthetically significant" by the United States Library of Congress, which selected the short for preservation in the National Film Registry.

These include a one-man band that plays its nose like a flute, a rabbit swinging in midair, a duck caricature of Al Jolson, and a beast with the heads of the Three Stooges.

[7] In the 2001 Masters of Animation, John Grant writes that "this short, in its cumulative effect, is more wildly inventive than anything even [Tex] Avery had produced for Warners".

[8] Animation historian Steve Schneider writes, "No mere Looney Tune, Porky in Wackyland was Warner Bros. Emancipation Proclamation.

Building on the creaky liberties inaugurated by director Tex Avery, here Bob Clampett scoffs and shreds the conventions — realism, literalism, infantilism, cutesiness, and worse — that, with the ascendancy of Disney, had come to caramelize cartooning.

By reminding us of animations' horizons — namely, none at all — this anything-goes film illustrates Sigmund Freud's notion that humor arises from breaking taboos.

[10] Tex Avery, for whom Clampett worked as an animator in the mid-1930s, borrowed strongly from this cartoon for his 1948 MGM cartoons Half-Pint Pygmy (in which the characters, George and Junior, travel to Africa in search of the world's smallest pygmy, only to discover that he has an uncle who's even smaller) and The Cat That Hated People (where the cat travels to the moon and encounters an array of characters similar to those in Clampett's Wackyland, e.g., a pair of gloves and lips that keep saying "Mammy, mammy", just like the Al Jolson duck in Porky in Wackyland).

According to writer Paul Dini, the Do-Do Bird is the father of Gogo Dodo, a character on the 1990s animated TV series Tiny Toon Adventures, and a second Wackyland is drawn into Acme Acres by Babs and Buster Bunny.

[citation needed] A small clip from the film was used in a Slappy Squirrel segment on another Warners animated TV series of the 1990s, Animaniacs.