The Philippine Native pig is either black or black with a white belly. Varieties include Ilocos and Jalajala. The Berkjala, Diani, Kaman, Koronadel and Libtong breeds were all developed from this breed. It is now thought to be extinct.

Pietrain, Belgium, the village from which the breed takes its name, was the birthplace of the breed. The exact origin is unknown but the local breed was "brought to the fore" during the difficult period of the pork market in 1950-51. The breed became popular in its native country and was exported to other countries, especially Germany.

It should be kept in mind that the founders of the Poland China of swine were no more conscious that they were forming a breed of livestock than any other practical producer of livestock who made great efforts to bring in improved seed stock to accomplish needed improvement. It is very difficult to evaluate the exact contribution that any particular breed or type may have made to the breed that was formed from the crossing and recrossing of many different kinds of breeding. It is difficult to imagine a breed of livestock owing a foundation debt to more different breeds than does the Poland.