have been selectively bred for thousands of years, sometimes by inbreeding dogs from the same ancestral lines, sometimes by mixing dogs from very different lines. The process continues today, resulting in a wide variety of dog breeds
. Dogs are the only animal with such a wide variation of breeds, it is unknown why their genetics differ so dramatically compared to the majority of animals.
The following list uses a wide interpretation of "breed". Breeds listed here may be traditional breeds with long histories as registered breeds, rare breeds with their own registries, or new breeds that may still be under development. Please see individual articles for more information. For breeds categorized by national origin, refer to the list of dog breeds by country.
This list only includes each dog once, using the most commonly used name.
Breeds are usually categorized by the functional type from which the breed was developed. The basic types are Companion dogs, Guard dogs, Hunting dogs, Pastoral dogs, and Sled dogs, although there are many other types and subtypes; see List of dog types and Breed Groups (dog) for more complete lists.
Other categories include:
GGerman Wirehaired Pointer
Glen of Imaal Terrier
Grand Anglo-Francais Tricolore
Grand Basset Griffon Vendéen
Grand Bleu de Gascogne
Grand Gascon Saintongeois
Grand Griffon Vendéen
Gran Mastín de Borínquen
Greater Swiss Mountain Dog
- Lists of recognized breeds for major kennel clubs as listed in breed boxes in all dog breed articles: