Yes you can! to do so simply turn on you Nintendo ds start the game and when it gets to the start up screen(the screen before you see your dogs) hold down A X B Y L R all at the same time then it will ask you if you want to erase all your data. Remember once its deleted it can't be restored.
umlimited walks, every min on nintendogs you are ment to get 1 or 3 points (not sure), if you plug in your charger over night make sure your nintendogs are beautiful to take them for a as they have they fur brushed place the brush in the middle of there belly and leave it there make sure the ds charger is plugged or it will get flat its that pauseing and it wont pause if the cheat will not work! $_$
No, the Briard is not available in all version of Nintendogs and Nintendogs and Cats.
No. Unfortunately Nintendo added no weather to the Nintendogs or Nintendogs + Cats games.
No, the Afghan Hound is not available in all version of Nintendogs and Nintendogs and Cats.
No, because Pokemon is not in Nintendogs.
No, the Kelpie is not available in Nintendogs.
It is not possible to get a trampoline on Nintendogs.
Nintendogs happened in 2005.
There is not a Nintendogs 2 but there is Nintendogs + Cats for the 3ds, which cannot be played on any other console but a 3DS.
Sorry to disapoint you but you can not get a leopard on nintendogs. Sorry :(
Nintendogs Game ID
Right now there is no information about Nintendogs 2.