I've got a miniature Daschund named Bogey. Ever since I got Nintendogs, I played with him every day. I at least took him for a walk (or several) each day and trained him to get gold medals on the championship level of all the competitions. I even got him 99 consecutive gold wins on the Championship level of the Obedience Trials.
But then I got Mario Kart DS. I was never that good at Mario Kart, but somehow I was able to keep getting further, and soon it was fighting for my attention as well. I played enough to unlock everything in the game, and then Animal Crossing: Wild World came out.
And now when I'm not playing AC:WW, well, I got a copy of CastleVania: Dawn Of Sorrow so that takes up my DS time too. And now I'm afraid to put Nintendogs back in...