The Nintendogs universe (ニンテンドッグス, Nintendogs) is a real-time pet simulation franchise developed and published by Nintendo for the Nintendo DS. It was originally released in three different versions: Dachshund & Friends, Lab & Friends, and Chihuahua & Friends, which was later joined by a Dalmation & Friends version. It has been re-released twice since then, first as a bundled release with a special edition Nintendo DS with a new version called Nintendogs: Best Friends, and then again as Nintendogs: Dalmatian & Friends.
A Labrador Retriever Nintendog features in Brawl as an Assist Trophy. When summoned, the Nintendog will appear at regular size among the players, before jumping towards the screen and trying to play with the player. This will obscure a player's view of the stage.
These are all of the trophies from the Nintendogs series.
The following characters from the series are spirits.