Yesss. <3 Nintendogs was one of, if not my favorite, Nintendo DS game. The level of interaction that could involve you are your pet (choosing the breed, feeding, playing, walks, competitions) made it a very suitable game to play over quite a few years; I still whip out my DS and check in on the puppers, every now and then. My main dogs were a Beagle, Shiba Inu, and a Siberian Huskey (this one had a nasty attitude, and I couldn't train her for the world). They have a special place in my heart.
I'm wonderfully surprised to see that others have enjoyed the game here, as well. <3 I didn't know anyone except for one other person whom played, and I missed out on a few of the multiplayer interactions.