Dogs come in an amazing array of sizes, shapes, colors and temperaments. Man’s best friend can be found in a tiny teacup version that fits in the palm of your hand or a hulking breed that compares in size to a small horse. Dogs have long been bred to suit specific purposes for mankind. Some are intended to be hunters while others for herding livestock or merely as companions or champions that will steal the show in competition. For dog lovers who are searching for a larger pet, here is a listing of the 20 largest dog breeds in the world. We’ve included those who are the largest according to a combination of height and weight.