Prerelease and unused content in Doubutsu no Mori


 * For a list of prerelease and unused content in Animal Crossing, see List of prerelease and unused content in Animal Crossing.

The following is a list of prerelease and unused content in.

Nintendo Space World 2000
was first showcased in a one-minute trailer at, a Japanese video game trade show hosted by Nintendo. Screenshots were also published in an article on Nintendo's Japanese website. The trailer and screenshots show some differences from the final release.
 * The game has a tentative logo, featuring a different font, color, and layout from the final one.
 * The bulletin board is located to the left of the shrine, rather than in the middle of the player house acre.
 * The sprites for furniture, wallpaper, and carpets are all a beige version of the map sprite from the final game rather than a unique sprite for each.
 * A blue villager house palette that is not in the final game is shown.
 * Signposts have an image of a blue house on them rather than a piece of paper with text.
 * The shrine has a green roof and a more red wood color.
 * A villager's door has a wreath on it.
 * Nook's Cranny uses the and  rather than its own unique wallpaper and carpet.
 * Two shirts that are not in the final game are shown. One is light blue and has the character 店 (shop) on it. The character, paired it being worn in a screenshot at Nook's Cranny with Tom Nook asking the player to deliver furniture, suggests it is an early version of the . The other shirt is dark blue with hollow yellow squares on it.
 * The, , , , and have different designs.

Partial source code leak
On July 25, 2020, partial source code for was  along with source code several other Nintendo games. The source code contains many assets and pieces of development information that are not in the final game.

Discoveries

 * A model for an unused cat villager, referred to as CAT13 in its file names. This ID was repurposed for Punchy, who is introduced in . This is not to be confused with Stinky, who has the villager ID cat13 in later games.
 * The folder containing assets for BEAR3 is missing from data, which may possibly indicate a cut bear villager.
 * Textures and a model for Blathers, who does not appear in the final game.
 * Early textures for Wisp.
 * A screenshot of a customized title screen which appears to be for use during, a Nintendo-hosted video game trade show.
 * Models for two unused human characters: SOLDIER and OBA (Japanese for "aunt"). The word oba is short for obaba, which is one of the internal names for Joan, suggesting this character may have been an early version of Joan.
 * Shaki, who appears in the final game as an unused character, was used as a placeholder character during development.
 * Famicom games were originally meant to be loaded from the add-on rather than being present in the game itself.
 * Icons for 9 unused items: cd, guitar, kusuri (medicine), nuts</tt>, pet</tt>, seed</tt>, nae</tt> (seedling), sickle</tt>, and ueki</tt> (potted plant).

Unused content
The following unused content does not appear in later releases of the game.

Party Dress and Tuxedo
パーティードレス (Party Dress) and タキシード (Tuxedo) are two fully functional clothing items.