Both father and daughter dogs can be bred. This is referred to as inbreeding. When a breeder desires to produce dogs that are nearly identical to one dog, in this case the father, inbreeding is employed.
If a breeder finds a male dog that he deems to be an exceptional specimen, mating the daughters back to the father results in puppies who are 75% genetically identical to the father. Rebreeding these daughters and granddaughters to the sire strengthens the genetic influence of that particular male on the offspring. Through inbreeding, it is possible to rapidly produce a strain of canines with specific desirable features. Additionally, it can rapidly identify recessive genetic abnormalities that might lead to birth malformations and diseases.