* Temperament: Breeders should only breed dogs that have good temperaments. This can be done by temperament testing dogs before breeding them.
* Conformation: Breeders should only breed dogs that have good conformation. This means that the dogs should be well-proportioned and have no major flaws.
* Pedigree: Breeders should only breed dogs that have a good pedigree. This means that the dogs should come from a line of dogs that have been bred for desirable traits.
* Performance: Breeders should only breed dogs that have good performance records. This can be done by showing dogs in competitions or by having them tested for their working abilities.