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Some animal breeders, including many dog breeders, make a distinction between inbreeding (mating mother/son, father/daughter, brother/sister) and linebreeding (mating say grandparent/grandchild, aunt/nephew). To a geneticist linebreeding and inbreeding only differ in degree. Inbreeding occurs when animals are bred to their… Read more...

I worked as a country vet for 25 years. Most of my patients were purpose bred working dogs. They were fit and athletic, with very good temperaments. I saw them for injuries or infections and I rarely saw the genetic… Read more...