Nintendogs: Best Friends

Before entering competitions, save the game. If you do badly, turn the game off before the competition ends to avoid ranking loss. Note: Whenever this is done, the leader's score will change.

Teach your dog to sit and jump. While it is sitting, tell it to jump. Your dog should do a back flip.

Get 300 owner points to unlock the Balloon.

Give your dog a bath when the dog's information page for coat reads "Clean". This will also make the dog like you more.

When you go for walks and your at the map. Go out of it and go back into walk. Keep doing this until you have the question mark boxes all close together.