Dog crossbreed to by a type (not breed) name, such as Eurohounds (racing sled dogs) or Lurchers (hunting dogs). These dogs could be considered only as cross breeds, not as designer animals, since appearance is not the main reason for them to be bred. An exception to this is the Labradoodle, which although having a Portmanteau name, is often used as a Guide or Assistance dog as well as being popular family dogs. Although designer dogs are often selected by owners for their novelty, reputable breeders sometimes use crossbreeding in an attempt to reduce the incidence of certain hereditary problems found in
Dog crossbreed traits are dominant, crossbreed dogs tend to manifest some physical characteristics more frequently than others. Border Collies and some Spaniels, for example, often produce crossbreed offspring with similar coats and ears. The crossbreed offspring of German Shepherds often have characteristic Shepherd faces. But all crossbred dogs will vary in which characteristics of their purebred parents that they inherit, and may look very different from one another, even within the same litter of puppies. Crossbreed dogs are not recognized by traditional breed registries, even if both parents are registered purebreds. Breed associations such as the AKC, the UKC, and the CKC,