What’s the Most Popular Dog Breed in the U.S.?
According to the American Kennel Club, the French Bulldog is currently the most popular dog breed in the United States.

What’s the Most Popular Dog Breed in the U.S.?
According to the American Kennel Club, the French Bulldog is currently the most popular dog breed in the United States.1
The “Frenchie” claimed the top spot in 2022, ending the 31-year reign of the Labrador Retriever, which now holds the second position. The rankings are based on registration data maintained by the AKC, which serves as the primary registry for purebred dogs in the country. While these rankings reflect the popularity of specific purebreds, it is estimated that more than half of all dogs in the U.S. are mixed-breed “mutts,” which are not represented in these breed-specific statistics.12
What is the difference between a purebred dog and a mixed-breed dog?
The primary difference between a purebred dog and a mixed-breed dog lies in their ancestry and the predictability of their traits.
Purebred Dogs
A purebred dog is defined as an animal whose genealogy is traceable for at least three generations within the same breed. These dogs are maintained by national registries, such as the American Kennel Club, which keep detailed pedigrees and stud books.4
Purebreds are evaluated against a “breed standard”—a blueprint that describes the ideal physical, behavioral, and personality traits of that specific breed. Because of this genetic consistency, purebred dogs are generally expected to reproduce their breed’s characteristics generation after generation. While this allows owners to anticipate a dog’s future appearance and temperament, it also means that specific breeds may be prone to known, hidden genetic problems that breeders work to control through careful selection.56
Mixed-Breed Dogs
Mixed-breed dogs, often referred to as mongrels, are the offspring of parents from different breeds. Unlike purebreds, they do not have a standardized genetic blueprint, making their future physical and behavioral traits less predictable. While mixed-breed dogs can also carry genetic health issues, there is often no way to determine what those might be or how they will manifest.786
How do dog shows determine which dog is the best example of its breed?
In conformation dog shows, judges determine the best example of a breed by evaluating individual dogs against a formal breed standard. This standard serves as a blueprint that outlines the ideal physical, behavioral, and personality traits unique to that specific breed.1011
During the competition, dogs are judged on several key criteria, including:10
- Physical Attributes: Judges carefully examine the dog’s size, proportions, bone structure, teeth, coat, and musculature.10
- Movement: The dog’s gait and overall movement are evaluated to ensure they align with the breed’s functional requirements.10
- Conformation: Because these dogs are considered potential breeding stock, they must be intact (not spayed or neutered) to compete.10
The judging process typically follows a hierarchical structure: males and females are judged separately against the breed standard, and the winners of each sex compete for the “Best of Breed” title. These winners then advance to compete against other breeds within their specific group (such as Sporting, Hound, or Working). Finally, the winners of each group compete for the ultimate title of “Best in Show.”106
What are some common health concerns associated with purebred dogs?
Purebred dogs are often associated with specific health concerns due to their genetic history and selective breeding practices. While many purebreds are healthy, the focus on maintaining specific breed standards can lead to the concentration of certain hereditary conditions.712
Common Health Concerns
- Genetic Predispositions: Many breeds have a known predilection for specific illnesses, such as heart disease, eye diseases (like cataracts or glaucoma), and various cancers cataracts or glaucoma), and various cancers.14
- Brachycephalic Issues: Flat-faced breeds, such as pugs and French bulldogs, are prone to severe respiratory obstructions, eye irritations, and overheating due to their exaggerated, man-made physical features.1314
- Orthopedic Conditions: Large breeds are frequently at risk for hip dysplasia and elbow dysplasia, while dogs with long, low bodies, such as dachshunds, are susceptible to spinal injuries.14
- Inbreeding Depression: Because some breeding practices involve mating related animals to concentrate desirable traits, it can inadvertently lead to reduced fertility, slower growth, and greater susceptibility to disease.12
- Breed-Specific Risks: Certain breeds are prone to unique emergencies, such as gastric dilatation volvulus in large-breed dogs or ear canal infections in breeds with dropped ears.14
It is ethically imperative for breeders to prioritize animal welfare by identifying and eliminating genetic abnormalities from the gene pool to ensure the long-term health of the breed.7
Sources
- 16 Questions About Pets Answered - What is the most common household pet in the United States? — Encyclopædia Britannica
- What’s the Most Popular Dog Breed in the U.S.? — Encyclopædia Britannica
- American Kennel Club — Encyclopædia Britannica
- dog - The breeds — Encyclopædia Britannica
- purebred — Merriam-Webster
- dog - Breed standards — Encyclopædia Britannica
- dog - Selection — Encyclopædia Britannica
- mongrel — Merriam-Webster
- mixed — Merriam-Webster
- dog show — Encyclopædia Britannica
- Westminster Kennel Club Dog Show — Encyclopædia Britannica
- Is It Wrong to Own a Flat-Faced Dog? — Encyclopædia Britannica
- Animal breeding - Inbreeding — Encyclopædia Britannica
- dog - Ailments — Encyclopædia Britannica
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