The ultimate goal of greyhound breeders is to breed for better greyhounds. A breeder who takes the time to learn more about his greyhounds or the greyhounds he intends to buy and breed — through researching how their ancestors fared and with what particular lines they crossed — will improve their odds of breeding quality racers.
There are many factors that affect the outcome of a breeding. The genetic make-up coupled with a series of environmental influences, which will comprise nutrition, exercise and training, as well as the dog’s mental approach to racing. Some dogs, quite capable of being fast, may have no interest in doing so within the constraints of the race track or with other dogs running along side. Yet, that same dog in a field might express its potential.
So in conclusion, a breeder’s aim is to breed a greyhound with the ability to run and the willingness to do so.