Puffles!!!

Here are cheats involving puffles:
Red Puffle:
First, take your red puffle on a walk. Then go surfing at the dock. Your red puffle will surf with you! This earns you a few extra coins.
Pink puffle:
Take your pink puffle on a walk. Go to the iceberg and play Aqua Grabber. Your pink puffle will swim with the Aqua Grabber. The puffle will blow out bubbles of air occasionally, which helps a lot.
Purple puffle:
Take your purple puffle on a walk, and go play the dance game at the Night Club. The puffle will dance with you. This earns extra coins.

Yellow Puffle:

Yellow puffles can play DJ3K! I would've thought they would play some game with painting or a game with acting, but they play DJ3K. I'm not sure if you get extra coins or anything, this is new.
Paint by Letters Puffle Book:
If you walk any puffle and go read this book in the library, this puffle's color will be the color of the puffle in the story. This doesn't really earn any coins, though.