Yea, I was very disappointed with Nintendogs after about a week of playing it.
The main reason I got it in the first place was my obsession with the ‘Shiba Inu’ breed, so I need to get anything that includes them since they are so rare here

But even though the game kept me addicted for about a week, it got very boring once you finished with the little competitions and all that’s left to do is pet & feed a fake puppy :-/

Perhaps I’d enjoy the game more if I didn’t have real dogs?
But if they make a future installment of the Nintendogs series they need to include stuff that keeps the game from ‘ending’, such as the dogs getting old and having genetics for breeding. There should be confirmation shows where your dogs are judged and awarded show points based upon your ability to breed for the best qualities against a breed standard.

They should also have the competitions be more ability-specific/breed-specific.
In Nintendogs, all the breeds have the same temperament, personality, and abilities. So untrue in real life. My Nintendog Shiba very easily won the frisbee competitions, whereas real life Shibas generally have no interest in frisbee no matter how much you try to make them care about it.

They should have tracking competitions specifically for hunting breeds, sheep-herding trials for the herding breeds, etc.
And the genetics would effect this as well where a pup bred from better herding dogs would do better in the trials.

AND of course they would need to allow the ability for online play where you compete with other real people’s dogs and can even breed with others who have good qualities, etc.

I think they can do all this in more perhaps if they made a Wii version. But unfortunately, if they know that it will still sell extremely well if they keep the game with very minimal features, that is what they will do