List of dogs breeds 43.0

The variety of dog breeds is strikingly illustrated by the Chihuahua mix and Great Dane. Dogs have undergone selective breeding for thousands of years, employing various techniques such as inbreeding within the same ancestral lines and introducing different breeds to create new combinations. This ongoing process contributes to an increasingly diverse range of appearances, encapsulated in the contrasting examples of a Chihuahua and a Great Dane.

The list presented below adopts a broad interpretation of the term "breed." Generally, dog breeds are classified according to their functional types, which include companion dogs, guard dogs, hunting dogs, herding dogs, and working dogs, among others. The breeds discussed here encompass traditional breeds with extensive historical backgrounds as registered entities, rare breeds with distinct registries, as well as newer breeds that may still be in development.

It is important to note that the origins of some breeds straddle the borders of multiple countries. Typically, a dog is recorded under the nation with which it has strong associations. For instance, the Löwchen has an ambiguous origin and is recognized under several national classifications.