http://cheats.gamespy.com/Nintendo-ds-cheats/n.html I don't know which version you have but scroll down and pick one.
Yes there are. Search Nintendogs cheats in Google - easiest way!
none
go to google and find it "cheats"
no there are not any cheats I know you might find some unlockables at www.gamewinners.com CHECK IT OUT !
The producers of Nintendogs have not made any cheats for any Nitendog game wow typos much?! anyway work your butt off, lazy, theres no cheats
there is none!
yes there are some
get atleast 2500 points
Play lots of tournaments and walk. Or you can always use cheats.
I do !!! but I am not telling cause i forgot them LOL
Yes there is go on codejunkies.com click codes/cheats and write nintendogs, press lab and friends and it will tell you all the cheat for the game.
you cant undo cheats but can delete you game when you turn your ds on and press these buttons all at the same to a+b+y+x+l+r your welcome