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
Guide Dogs for the Blind Retrievers, and Lab/Golden crosses. Guide Dogs focuses its breeding on the qualities needed in a guide including excellent health, willingness to work, high desire to please, intelligence, and an easy-to-work-with temperament. Guide for the Blind also participates in an international program in which guide dogs schools from around the world work together to diversify the gene pool in the breeding colonies by providing puppies from high success parents to other schools. This creates a healthier breeding colony for all who participate. Puppy raising is one of the dog programs in which volunteers are needed. These volunteers sign up to receive