The official standards of all the breeds AKC recognizes are compiled in its official publication, The Complete Dog Book. A breed standard is a word description of what the ideal dog of that breed looks like. It is an attempt to describe "perfection." The standard is the "model" breeders use in their efforts to breed better dogs. Judges use the standard as a guide when evaluating dogs at a show. Each animal in competition is compared with the judge's mental image of the perfect dog described in the standard.