That listerine thing is pretty cool! I know that this isn't really a tip but it's a kinda cool fact: Dogs are one of few animals that grow more than one hair per follicle. There is a hair in the middle that is surrounded by a few more hairs called primary hairs. All of these hairs are coarse hairs that can be stood up, also called gaurd hairs. Then there's another set of hairs around that that are softer and cannot be stood up called secondary hairs. Wired-haired dogs have mostly primary hairs and softer dogs have more secondary hairs.