A domestic cat breed is a group of cats with a consistent, documented set of physical and behavioral traits passed from one generation to the next. What separates a “breed” from any other house cat is selective breeding and formal recognition by a registry like the Cat Fanciers’ Association (CFA) or The International Cat Association (TICA). The CFA currently recognizes 45 pedigreed breeds, while TICA recognizes 73. That might sound like a lot, but the vast majority of pet cats worldwide are mixed-breed cats with no pedigree at all.
What Makes a Cat a “Breed”
A cat breed isn’t just a look. It’s a documented lineage. To qualify, a cat needs a traceable family tree showing that its parents, grandparents, and further ancestors consistently produced the same set of traits: coat length and texture, body shape, ear set, eye color, and temperament. Registries maintain written standards describing exactly what each breed should look like, and breeders aim to produce cats that match those standards generation after generation.
This is what distinguishes a pedigreed Maine Coon from a big, fluffy mixed-breed cat that happens to look like one. Without the documented ancestry, a cat isn’t considered a recognized breed no matter how closely it resembles one. That tabby you adopted from the shelter is almost certainly a “domestic shorthair” or “domestic longhair,” which are catch-all labels for cats without a pedigree. These cats are sometimes called moggies, and they make up the overwhelming majority of the pet cat population.
Natural Breeds vs. Developed Breeds
Cat breeds fall into two broad categories. The first are “natural” or “foundation” breeds, regional populations that developed distinct traits over centuries simply by living in geographic isolation. The CFA designates sixteen breeds as natural, including the Persian, Siamese, Russian Blue, and Turkish Angora. These cats looked recognizably different from one another long before anyone started keeping breeding records. The Siamese, for instance, had its striking color points and slender frame well before European breeders formalized the look in the late 1800s.
The second category is developed breeds, created through deliberate crossbreeding within roughly the last 50 years. Most of these are defined by a single distinctive gene variant derived from one of the natural breeds. The Scottish Fold’s signature folded ears, for example, trace back to a single genetic mutation found on a farm in Scotland in 1961. Breeders then selectively crossed cats carrying that trait to establish a consistent new breed. This pattern of building a breed around one striking feature is the most common way new breeds emerge today.
Compared to dogs, cattle, or horses, where breeds can stretch back thousands of years, cat breeding is remarkably recent. Most cat breeds were developed within the past 150 years, mainly in Europe and the United States. And unlike livestock or working dogs, cats were bred almost entirely for aesthetic traits rather than for specific jobs or behaviors.
How a New Breed Gets Recognized
Gaining official breed status is a multi-stage process that can take years. At the CFA, a new breed first must be accepted for registration, which means providing enough documented cats with consistent traits to show the breed can reproduce reliably. After that, the breed becomes eligible for exhibition in the Miscellaneous Class at cat shows the following season. From there, it can advance to Provisional status, and eventually to full Championship competition, where its cats compete alongside established breeds.
Registration alone does not guarantee a breed will ever reach Championship status. The registry needs to see that the breed’s population is growing, that the cats are healthy, and that the defining traits breed true across multiple generations. TICA follows a similar tiered system, and the two organizations don’t always agree on which breeds to recognize, which is why their breed counts differ.
Body Type Classifications
Registries group breeds by body type, giving breeders and judges a shared vocabulary. The main categories range from cobby (a compact, broad-chested build like the Persian) to oriental (a long, lean, angular frame like the Siamese). In between are semi-cobby, semi-foreign, foreign, and medium builds. A Maine Coon, for instance, is classified as long-bodied, while a Russian Blue falls into the foreign category. These classifications help define the proportions judges look for at shows and give you a quick sense of a breed’s overall shape.
Personality Differences Between Breeds
Breed standards focus on appearance, but behavioral tendencies do run along breed lines. A large Finnish study comparing thousands of cats across dozens of breeds found measurable differences in activity level, sociability, and aggression. Persians ranked as the least aggressive toward other cats and among the least shy around unfamiliar objects and people. Maine Coons were among the most likely to seek out human contact while also ranking low in aggression. Ragdolls scored as one of the least active breeds, alongside British Shorthairs.
On the other end of the spectrum, Turkish Vans and Angoras ranked highest for aggression toward family members, strangers, and other cats. Korats, while intensely social and among the most likely to seek human contact, also showed higher aggression levels across the board. These are population-level tendencies, not guarantees. Individual personality varies enormously, and how a cat is raised matters at least as much as its breed. Still, if you’re choosing a breed for a multi-cat household, knowing that Persians and Maine Coons tend to be easygoing with other cats is genuinely useful information.
Genetic Health and Breed-Specific Risks
The trade-off of selective breeding is reduced genetic diversity. When breeders work with a small founding population and select for specific traits, harmful genetic mutations can concentrate within the breed. Persians, for example, carry an elevated risk for a kidney condition called polycystic kidney disease (PKD), where fluid-filled cysts slowly damage the kidneys over time. The mutation responsible was identified in 2004, and responsible breeders now screen for it.
Burmese cats illustrate this dynamic particularly well. The relatively high level of inbreeding within the breed has been linked to multiple inherited conditions, including a muscle weakness disorder, a painful oral condition, and a craniofacial malformation. Persians also carry a higher risk of progressive retinal atrophy, a condition that gradually destroys vision.
Mixed-breed cats generally have broader genetic diversity, which provides some buffer against these concentrated risks. That doesn’t make them immune to health problems, but it does mean they’re less likely to carry the breed-specific mutations that accumulate in small, closed breeding populations. If you’re buying a pedigreed cat, asking the breeder about genetic testing for known breed-specific conditions is one of the most practical steps you can take.
Purebred vs. Mixed-Breed: What the Labels Mean
A purebred or pedigreed cat has a documented family tree registered with an organization like TICA or CFA. A mixed-breed cat, domestic shorthair, or domestic longhair simply means the cat’s ancestry isn’t tracked. “Domestic shorthair” isn’t a breed in the formal sense. It’s a description of a cat with short fur and no known pedigree, the feline equivalent of “mutt.”
Some cats look strikingly similar to recognized breeds without actually being one. A gray cat with dense fur might resemble a Russian Blue, or a large tabby might look like a Maine Coon. Without registration papers, these cats are still considered domestic shorthairs or longhairs. DNA testing kits marketed to pet owners can sometimes identify breed-associated genetic markers, but they’re estimating ancestry rather than confirming pedigree status. The distinction matters most if you plan to show or breed cats. For a family pet, a cat’s individual temperament and health matter far more than whether it carries a breed label.