How to Delete Your Nintendogs+Cats Completely

Open your Nintendogs + Cats game. To begin, turn on your Nintendo3DS and navigate to your Nintendogs + Cats game.

Press and hold the A, B, X, and Y buttons. While your Nintendogs + Cats game is loading, hold these four buttons down at the same time. This will bring up a pop-up screen that prompts you to delete your save file and start the game over. Make sure to press the buttons before the title screen appears! Press A, B, X, and Y as soon as the "Nintendogs + Cats" logo appears. This should be a white loading screen with a small dog icon running in the bottom left-hand corner. If this button combination doesn't work, try pressing the L and R buttons in addition. In total: A, B, X, Y, L, and R.

Select "Yes" to delete your save file. A question will pop up asking you if you want to delete your save file. Make sure that you are ready to lose all of your progress from this game – including all dogs, cats, and items. There is no way to recover the save file once it's gone.

Start over. Once you click "Yes," you have completely deleted the old Nintendogs + Cats file. Let the game load again, and begin fresh!