Either you can get the L button fixed or you can delete all of your dogs but one and the "one" could be your favourite dog.I know this doesn't answer your question completely but i don't know how to resolve the problem,sorry
go to main menu select delete and delete it
unscrew your keyboard and check if the wires are lose, broken, there are no buttons, or a broken button.
you smash it to pieces!
by delete data it means delete ALL data. short answer. NO
you cant deletle nintendogs but you can simply go to the kennel and choose "donate" and then you can decide which dog you dont want anymore.
Your dog has to has to have a name to delete it but you go the dog hotel and press donate a dog.
the delete button in the upper right of your keyboard is the delete button, which is the equivalent of the backspace button of a PC
yeah, but i don't see why anybody would want to erase they're file... when you see the nintendogs add after you click the game you press down x,y,a,b,r and l (All buttons besides the arrow pad and start/select button) and hold it intill you see a pop up that asks if you want to delete it, the click yes/ok.
Connect the r4 to a computer and got to the r4 games. Next find the nintendogs sav. file then delete the sav. file and now you got a new game.Hope this helps.
When you turn on your DS and click on you Nintendogs Games Hold L+R+A+B+Y+X then a message will come up and say. 'Are you sure you want to delete your data' - Click Yes. x 2
it is up to you if you want to delete it it is notyour friends choice it is your choice
you cant delete the account you can delete the characters though login then press the character you want to delete then a button says delete press that button