Pies: The Berger Picard, Miniature American Shepherd and Lagotto Romagnolo are the newest dog breeds recognized by the America

Evidence: 36 • authority: 72

The American Kennel Club (AKC) is a 501(c)(4) nonprofit registry of purebred dog pedigrees in the United States. In addition to maintaining its pedigree registry, this kennel club also promotes and sanctions events for purebred dogs, including the Westminster Kennel Club Dog Show, an annual event which predates the official forming of the AKC, the National Dog Show and the AKC National Championship. The AKC is a non-member partner with the Fédération Cynologique Internationale. The AKC fully recognizes 205 dog breeds, as of March 2026.

Evidence: 36 • authority: 80

Evidence: 36 • authority: 80

Evidence: 36 • authority: 72

Evidence: 29 • authority: 72

The Chihuahua or Chihuahueño is a Mexican breed of toy dog and the smallest recognized dog breed in the world. It is primarily kept as a companion animal and is characterized by its compact size, large erect ears, and rounded skull. The breed occurs in both short- and long-coated varieties, with a wide range of colors and patterns. Genetic studies indicate that the Chihuahua retains a small proportion of pre-Columbian indigenous American dog ancestry, distinguishing it from most modern breeds, which are largely of European origin. The breed was formally recognized in the early twentieth century and has since become one of the most popular companion dogs worldwide.

Evidence: 29 • authority: 88

Evidence: 29 • authority: 72

A dog breed is a particular type of dog that was purposefully bred by humans to perform specific tasks, such as herding, hunting, and guarding. Dogs are the most variable mammal on Earth, with artificial selection producing upward of 360 globally recognized breeds. These breeds possess distinct traits related to morphology, which include body size and shape, tail phenotype, fur type, etc., but are only one species of dog. Their behavioral traits include guarding, herding, and hunting, and personality traits such as hypersocial behavior, boldness, and aggression. Most breeds were derived from small numbers of founders within the last 200 years. Because of their adaptability and usefulness to…

Evidence: 29 • authority: 88

Evidence: 21 • authority: 88

Evidence: 21 • authority: 88

Evidence: 21 • authority: 88

Evidence: 21 • authority: 92

Association between body weight and hip dysplasia screening results in young adult dogs of different breeds in Sweden.. Canine hip dysplasia (HD) is a common developmental orthopaedic disorder with substantial impact on health and life expectancy. Body weight has been considered an important factor for the development, but prior studies evaluating this association on a large data set, strictly collected and without preselection of screening results, are lacking. The objectives of the study were to investigate a potential association between body weight and radiographic HD screening grade in young adult dogs of different breeds, and to study potential breed differences in selected breeds of…