All dogs need some form of grooming, there is no question about that. Even hairless chihuahuas should be wiped with a damp chamois leather to get rid of loose skin and dust. However, one of the main purposes for grooming your dog regularly is so that you can check him for skin problems such as allergic reactions to flea or tick bites. Another reason is bonding. In a pack situation, dogs groom other dogs and are themselves groomed every day and dogs like it.