Instructions
Give food and water to your puppy before taking it out on a walk. Feeding and watering your puppy gives it the best chance of finding valuable items on your walk.
Take your puppy on a walk into a new area of the game. You can do this by accessing the game map and clicking on an area with a "?" representing its status.
Slowly lead your puppy along the sidewalks in the new area. Every 15 steps or so, tap the ground on the screen with your stylus. This will cause your puppy to look for an item.
Tap the item your puppy brings you with your stylus to open it. If it is valuable, it will open up as a gift-wrapped box; otherwise it will be a bag of trash to throw out. Keep the valuable item for later.
Go to the "Items" menu once you lead your puppy back home. Tap each new item with your stylus and select the "Sell" option to gain money.