Nintendogs is a real-time pet simulation video game developed and published in 2005 by Nintendo for the Nintendo DS. Nintendogs began as a technical demo on the Nintendo GameCube long before it was considered for the DS. It made its way to the handheld when the DS was still in development. Shigeru Miyamoto originally came up with the idea for the game when he and his family bought a dog, which inspired him to create the project.
The game’s producer, Hideki Konno, looking for a game to take full advantage of all of the Nintendo DS’s features, decided on a dog simulation game. Nintendogs, first called Puppy Times, was originally designed to have 15 different versions, one for each breed of dog. Satoru Iwata suggested this to convey the feel that the player was choosing a dog from a kennel.
However, the debugging process for each version would have been too time consuming to be feasible. After going back and forth between numbers of versions, they eventually settled for three, with six dogs each and the rest available after completing in-game goals. [Info from Wikipedia]
In the screens below, you can notice an early version of the game, with different HUD and commands.
[Contribute by Matt Gander from www.gamesasylum.com]