Dog Breeds: Complete Encyclopedia and Guides

A dog breed is a population of domestic dogs developed through generations of selective breeding for a consistent appearance, temperament, and function, from the deep-chested speed of a Greyhound to the water-ready coat of a Labrador Retriever. Every breed traces back to a written standard maintained by a parent club and a registry such as the American Kennel Club (AKC), which is what separates a true breed from a type or a mixed-breed dog. This encyclopedia organizes every breed covered on The Dogs Wiki by its official AKC group, so whether you’re comparing working guardian breeds, browsing toy companions, or deciding between two similar-looking retrievers, you can go straight to the right cluster. Below you’ll find all seven AKC breed groups, dedicated sections for guardian and mixed-breed dogs, in-depth profiles of the most popular breeds in the U.S., and tools for choosing, comparing, and budgeting for a dog by breed.

What Is a Dog Breed?

A dog breed is a group of dogs with a shared ancestry, a closed or controlled gene pool, and a written breed standard that describes their ideal size, coat, structure, and temperament. That standard is what makes a Golden Retriever recognizably a Golden Retriever anywhere in the world, generation after generation. A breed is different from a “type” (a loose category based on job or appearance, like “sighthound”) and from a mixed-breed dog, which has no fixed standard because its ancestry isn’t controlled. In the U.S., a breed generally isn’t considered fully established until it’s registered with the AKC or a comparable registry and represented by an official parent club that maintains its standard.

Dog Breeds by AKC Group: Explore All 7 Groups

The American Kennel Club sorts every recognized breed into one of seven groups, based mainly on the job the breed was originally developed to do rather than its size or looks. Understanding which group a breed belongs to is one of the fastest ways to predict its energy level, trainability, and general temperament before you ever meet the dog. Here’s what defines each group, with a link through to the full breed list for each.

• Sporting Group
• Hound Group
• Working Group
• Terrier Group
• Toy Group
• Herding Group
• Non-Sporting Group

Sporting Group

Sporting dogs are gun dogs bred to locate, flush, and retrieve game, which is why Retrievers, Pointers, Setters, and Spaniels still love water and fieldwork today. The Golden Retriever and Labrador Retriever both come from this group. Explore the full Sporting Group guide.

Hound Group

Hounds were bred to track or chase game largely on their own, without waiting on direction from a handler, a trait that still shows up as independence and a strong nose or prey drive today. The group splits informally into scent hounds, like the Beagle, and sighthounds, like the Greyhound. Explore the full Hound Group guide.

Working Group

Working dogs were developed for demanding physical jobs guarding property, pulling sleds and carts, and water rescue, which makes most of this group large, strong, and confident. The Siberian Husky and Bernese Mountain Dog are well-known Working Group breeds. Explore the full Working Group guide.

Terrier Group

Terriers were bred to hunt and dispatch vermin, and it shows: this is a feisty, energetic group with a famously low tolerance for other animals and a stubborn streak. Sizes range from the small Cairn Terrier to the much larger Airedale Terrier. Explore the full Terrier Group guide.

Toy Group

Toy breeds were bred purely for companionship, which makes them a strong fit for apartments and smaller households despite some, like the Chihuahua, having outsized personalities for their size. Explore the full Toy Group guide.

Herding Group

Herding dogs were developed to control the movement of livestock, giving the group its trademark intelligence and quick responsiveness to commands. It’s the newest AKC group, split off from Working in 1983, and includes the German Shepherd and the Border Collie. Explore the full Herding Group guide.

Non-Sporting Group

Non-Sporting is a catch-all for breeds that don’t fit neatly into the other six categories, spanning everything from the wrinkled Bulldog to the curly-coated Poodle and the compact French Bulldog. Explore the full Non-Sporting Group guide.

Guardian and Livestock Guardian Dog (LGD) Breeds

Large guardian and molosser-type breeds, think Great Pyrenees, Anatolian Shepherd, and Kangal, technically fall under the AKC’s Working Group, but we cover them in their own dedicated cluster here. Grouping every guardian breed under the already-large Working Group page would bury the specific information that matters most to someone researching a flock or property guardian: territorial instinct, independence from handler direction, and suitability around livestock and children. See the full Guardian & Livestock Guardian Dog breed guide.

Designer and Mixed Breed Dogs

A designer breed is an intentional cross between two purebred parent breeds: a Goldendoodle (Golden Retriever × Poodle) is the best-known example, bred for a specific combination of traits like a low-shedding coat. A mixed-breed dog, or mutt, is the result of unplanned or undocumented ancestry, with no breed standard governing what it will look like or act like as an adult. Neither designer breeds nor mixed-breed dogs are AKC-recognized breeds in the traditional sense, which is why they get their own dedicated section rather than being folded into a purebred parent’s group page. See the full Designer & Mixed Breeds guide.

Most Popular Dog Breeds: In-Depth Profiles

Some breeds get a full, standalone profile on The Dogs Wiki, covering temperament, size, lifespan, health risks, grooming, exercise, training, and whether the breed fits your household. These are the breeds most people are actually searching for, so we’ve made sure they’re one click away no matter where you start on this page:

• Golden Retriever: The classic friendly, trainable family retriever.
• Labrador Retriever: America’s most registered breed for three decades running.
• German Shepherd: The world’s most widely used working and protection breed.
• Bulldog: A calm, low-energy companion with distinctive health-care needs.
• Poodle: A highly trainable, low-shedding breed available in three sizes.
• French Bulldog: Currently the AKC’s #1 most popular breed.

How to Choose the Right Dog Breed for You

The right breed for you depends less on which dog is “best” and more on how well its needs match your living space, activity level, grooming tolerance, experience with dogs, and budget. A high-energy Herding or Sporting breed can struggle in a small apartment with an inactive owner, and a low-exercise Toy or Non-Sporting breed may not suit someone who wants a hiking partner. Rather than guess, use our dedicated selection tools: browse the Breed Selection Guides for curated lists like “best dog breeds for apartments” and “best dog breeds for first-time owners,” or filter breeds directly by size, shedding, and energy level.

Dog Breeds by Cost

Purchase price is only the starting point; insurance, food, grooming, and veterinary care all vary significantly by breed, and health-prone breeds like the Bulldog or French Bulldog often carry higher lifetime costs than a hardier breed of similar size. If budget is a deciding factor in your search, see our full breakdown of dog breeds by cost.

Compare Dog Breeds Side by Side

If you’re torn between two specific breeds, Golden Retriever or Labrador, Bulldog or French Bulldog, a head-to-head comparison is usually faster than reading two full profiles separately. See our full library of dog breed comparisons.