#96 - Nintendogs Wii

A Wii version of Nintendogs was considered, but stayed exclusive to the DS due to it having a microphone, which was crucial for the game's experience. They thought a microphone peripheral for the Wii wasn't needed... until the Wii Speak came out in 2008.

SOURCE: http://www.nintendo.co.uk/Iwata-Asks/Iwata-Asks-Nintendo-3DS/Vol-4-nintendogs-cats/1-Why-cats-Is-Smaller-in-the-Logo/1-Why-cats-Is-Smaller-in-the-Logo-204721.html