The Pietrain pig, which has its origin and name in the town of Brabant, Belgium, has been known since 1920 and was not discovered until 1950. The race almost died out during World War II because of its lack of fat. It comes, probably, from well-formed Norman pigs and then has its origin in the genetic mutation of the halothane gene at the natural level of 80% of the total population of the breed.Historically, the development of extreme types of bodybuilding has been done in Germany and Belgium.

