Boston Terrier head portrait outdoors.
Boston Terrier

What's a dog breed?

People have been breeding dogs since prehistoric times. The earliest dog breeders used wolves to create domestic dogs. From the beginning, humans purposefully bred dogs to perform various tasks. Hunting, guarding, and herding are thought to be among the earliest job…

What's a dog breed?

People have been breeding dogs since prehistoric times. The earliest dog breeders used wolves to create domestic dogs. From the beginning, humans purposefully bred dogs to perform various tasks. Hunting, guarding, and herding are thought to be among the earliest jobs eagerly performed by the animal destined to be called “man’s best friend.”

For thousands of years, humans bred dogs toward the physical and mental traits best suited for the work expected of them. The sleek Greyhound types bred to chase fleet-footed prey, and the huge mastiff types used as guard dogs and warriors, are two ancient examples of dogs bred for specific jobs.

As humans became more sophisticated, so did their dogs. Eventually, there emerged specific breeds of dogs, custom-bred to suit the breeders’ local needs and circumstances. The Greyhound, for instance, was the foundation type for the immense Irish Wolfhound and the dainty Italian Greyhound. All three have a distinct family resemblance, but you’d never mistake one for another.

So, then, when is a breed a breed and not just a kind or type of dog? The simplest way to define a breed is to say it always “breeds true.” That is, breeding a purebred Irish Setter to another purebred Irish Setter will always produce dogs instantly recognizable as Irish Setters.

Each breed’s ideal physical traits, movement, and temperament are set down in a written document called a “breed standard.” For example, the breed standard sets forth the traits that make a Cocker Spaniel a Cocker Spaniel and not a Springer Spaniel.

The AKC standard for each breed originates with a “parent club,” the AKC-recognized national club devoted to a particular breed. Once approved by the AKC, a standard becomes both the breeder’s “blueprint” and the instrument used by dog show judges to evaluate a breeder’s work.

There are over 340 dog breeds known throughout the world. The American Kennel Club recognizes 200 breeds.

Gordon Setter

Gordon Setter

The Gordon Setter, the black avenger of the Highlands, is a substantial bird dog named for a…

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Grand Basset Griffon Vendéen

Grand Basset Griffon Vendéen

The Grand Basset Griffon Venden is a French scenthound. Somewhat active and never high-strung, ye…

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Great Dane

Great Dane

The easygoing Great Dane, the mighty "Apollo of Dogs," is a total joy to live with, but owning a…

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Great Pyrenees

Great Pyrenees

The Great Pyrenees is a large, thickly coated, and immensely powerful working dog bred to dete…

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Greater Swiss Mountain Dog

Greater Swiss Mountain Dog

The Greater Swiss Mountain Dog is a large, immensely strong worker famous for a dense coat of…

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Greyhound

Greyhound

The champion sprinter of dogdom, the Greyhound is a gentle, noble, and sweet-tempered companio…

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Harrier

Harrier

The Harrier is a swift, prey-driven pack hound of medium size first bred in medieval England to…

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Havanese

Havanese

Havanese, the only dog breed native to Cuba, are cheerful little dogs with a spring in their step…

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Ibizan Hound

Ibizan Hound

The Ibizan Hound is a lithe and leggy visitor from the dawn of civilization, bred as a rabbi…

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Icelandic Sheepdog

Icelandic Sheepdog

The Icelandic Sheepdog, Iceland's only native dog breed, is a charmingly friendly and faithful…

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Irish Red and White Setter

Irish Red and White Setter

The rollicking Irish Red and White Setter is an athletic medium-sized bird dog bred primarily fo…

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Irish Setter

Irish Setter

The Irish Setter is a high-spirited gundog known for grace, swiftness, and a flashy red coat. They…

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