Dog Breed Sizes are the different classifications of all dog breeds depending on their size. Dog Breed Sizes are divided by their overall weight and height. The different types of Dog Breed Sizes include X-Small, Small, Medium, Large, and X-Large Dog Breeds. Dog Breed Sizes have an impact on the overall health, lifespan, expenses, and activity level requirements of a dog. Different Dog Breed Sizes are more suitable for certain environments, purposes, as well as the owner’s lifestyle. The different Dog Breed Sizes also determine their different care needs, health, and longevity aspects of a dog.