Nintendog

Nintendog is the name of any puppy character from Nintendo's Nintendogs game series. Nintendogs are named after their debut game, which in turn is a portmanteau of "Nintendo" and "dog". Nintendogs have appeared in a few games related to the Mario franchise.

WarioWare series
Nintendogs appear in the microgame Nintendogs in WarioWare: Smooth Moves, where the player has to high-five the puppies. They also appear in a similarly named microgame in WarioWare Gold, where the player must rub them.

Super Smash Bros. Brawl
A white Nintendog became an Assist Trophy in Super Smash Bros. Brawl. When it is activated, it will distract the players by covering most of the screen and start clawing and barking, although it only works on actual players. Occasionally, pausing the game while the Nintendog is on the screen instantly causes it to leave. Nintendogs also appear as stickers and a trophy.

According to Masahiro Sakurai, Nintendogs were briefly considered to be a playable character in Brawl, but were ultimately dropped as Sakurai did not consider such a character to be suited for battle and would work better as an Assist Trophy instead.

Super Smash Bros. for Nintendo 3DS / Wii U
In Super Smash Bros. for Nintendo 3DS and Super Smash Bros. for Wii U, the Nintendog returns as an Assist Trophy, though in this game it is a. A number of Nintendogs also appear on the Living Room stage in Super Smash Bros. for Nintendo 3DS.

If the game is paused while the Nintendog is on-screen, while it still appears in front of the screen, moving the camera causes it to be missing at every angle and zoom.

Super Smash Bros. Ultimate
In Super Smash Bros. Ultimate, the Nintendog returns as an Assist Trophy, though in this game it is a. As the Living Room from Super Smash Bros. for Nintendo 3DS returns, a number of Nintendogs also appear. All three Nintendogs that have appeared as Assist Trophies in the series appear as spirits, tying with Andross, Waluigi, and Zero for having the most spirits for an Assist Trophy.

The series name "Nintendogs" is not capitalized in this game, matching the stylization of the series' name.

Super Mario Odyssey
In Super Mario Odyssey, a Nintendog, specifically a wearing a fedora, is a recurring character. Its model is taken directly from Nintendogs. Mario can play fetch with the dog by throwing Cappy, whom the Nintendog will then retrieve. It shows up in various kingdoms after the kingdom's boss has been defeated. The Nintendog appears in the Sand Kingdom, Seaside Kingdom, Metro Kingdom, Moon Kingdom (wearing a space helmet), and Mushroom Kingdom, where it leads players to buried coins and Power Moons. Furthermore, in the other kingdoms left, the Nintendog appears inside the Odyssey after finishing the game at least once. A Toad in the Mushroom Kingdom claims to be the Nintendog's owner. Also, if Mario falls asleep, the Nintendog will fall asleep next to him. The Nintendog is also seen in attendance at the wedding of Bowser and Peach. The Nintendog's fedora cannot be removed, possibly to prevent Mario from potentially capturing it. It also occasionally barks at enemies.

Super Smash Bros. for Nintendo 3DS / Wii U trophies
Red indicates exclusive to the Nintendo 3DS version.

Trivia

 * There are many Mario references in the Nintendogs series. The player can find hats that are the same as Mario's and Luigi's, as well as various toys. These include Mario, Princess Peach, and Bowser karts in the first game (designed with their Mario Kart DS kart style), which can be driven around the room while they play music from courses in Mario Kart: Double Dash!!, as well as Mushroom and ? Block toys to throw around. In the second game, the Mario and Peach karts return, while the Bowser kart is replaced by a Yoshi kart.