What happens if you finish all the competitions on nintendogs ds?

Once you finish all the competitions in Nintendogs for the DS, you unlock the ability to participate in the "Super Dog" competitions, which are more challenging and offer better rewards. Additionally, you can continue to train your dogs, participate in daily activities, and care for them, as the game doesn't have a definitive end. Players can also focus on breeding dogs or collecting all breeds available in the game. Overall, the game's open-ended nature allows for continued engagement even after completing all competitions.