Nintendogs was responsible for the incredible success of Nintendo DS. The game was a must between animal lovers and people that enjoy the Tamagotchi formula. Times changes from that moment, but the mobile environment could be appropriate for that type of game.

Nintendo has filled a patent about Nintendogs in mobile devices, therefore, a new title could be in works.

Nintendogs patent [RUMOR] Nintendogs coming to mobile according to patent | VGLeaks 2.0

Like I said, mobile is perfect for Nintendogs or something in that vein.

Thanks, Reddit.