Nintendogs: Dalmatian and Friends Tips

ETC items
Go on a walk with a dog, get as many ? blocks as you can, and at the end of the walk go to the park before going home. Then, change the accessory on your dog and turn off the ds when it's done saving. Now you have all the items ans trainer points you got on that walk, but you can go for a walk with the very same dog again.

Next, go on a walk with the same dog after ds is turned back home. Get all the ? boxes but don't go to the park- go straight home and save. Do the above steps with all of your dogs.

After all of your dogs have done this, go to the secondhand shop and sell all the ETC items you picked up. Trust me, I made like 300 bucks from doing this.