While playing hopscotch with Alice out front, the gang notices Dr Jane's dog, Snowball, doing something really odd... pawing the ground like he's wiping his feet and then rubbing up against a bush like he's got an itch. But what could he be doing? Luna, Jupiter and Clyde think up a great experiment over at the pet shop, but they only find part of the answers they're looking for. They're going to have to make believe they're little doggies themselves and see if they can discover why dogs do what they do. Educational Objective: Discover that dogs are able to leave scent messages for other dogs by pawing the ground and rubbing against things.