What is Dog Clothing? Basically, it’s any sort of garment created by humans. It can be categorized into different types, styles, and prices. Small breed dogs are the most common type of dog to wear clothing, but larger breeds can also wear clothes. Although small dogs are more easily dressed than larger ones, many people still dress them as a way to keep warm in cold weather. In fact, small dogs often suffer from colder weather than larger ones, which is why their clothing should be as warm and practical as possible.