Over the course of history people spontaneously and consciously have been selecting the best dogs, the cleverest, the bravest, the most devoted, the strongest, the most resilient helpers for work. The main selection criterion did not lye in the looks of a dog, but in its adequacy for particular work. As a result of rapid technological expansion, urbanization of society people less and less need a dog as a helper, and bygone workers such as gate-keepers, shepherds, hunters are turning into decorative pets. The wonderful working breeds degrade and only the breeders and owners can put an end to this process.