When he did get out, they'd put him down for only a short while before they'd return him to his crate to rest. The Master had bred Blitz far and wide and had even bought five pups in the past four years trying to get another Blitz but all without success. Never exactly, but Nature will help us, if we let her, to produce pups very similar in both appearance and ability - very much like Blitz. We can only produce another Blitz by inbreeding. We are foolish, if we permit such unrelated taboos to slow the progress of our dogs.
History records instances where human inbreeding was an accepted way of life.
We have spoken of the Greeks but probably the most famous example was one of religious law. The Spartans no longer expose their infants to natures violence so that only the fittest survive. Among humans today every effort of medical science is directed toward saving lives. Saving all lives, the congenital cripples, the mentally defective, the deviate. Genetic laws apply equally to man and beast.