Boar–pig hybrid

Boar–pig hybrid is a hybridized offspring of a cross between the Eurasian wild boar (Sus scrofa scrofa) and any domestic pig (Sus scrofa domesticus). Feral hybrids exist throughout Eurasia, the Americas, Australia, and in other places where European settlers imported wild boars to use as game animals. In many areas, a variable mixture of these hybrids and feral pigs of all-domesticated original stock (even environmental, agricultural, hunting, and other regulatory agencies often do not bother distinguishing between them) have become invasive species. Their status as pest animals has reached crisis proportions in Australia, parts of Brazil, and parts of the United States, and the animals are often freely hunted in hopes of eradicating them or at least reducing them to a controllable population.

When bred intentionally, the hybrid is intended to visually recreate‍—‍to "back-breed"— the look of pigs represented in prehistoric artworks of the Iron Age and earlier in ancient Europe. A project to create them, under the name Iron Age pig, started in the early 1980s by crossing a male wild boar with a Tamworth sow to produce an animal that looks like the pig from long ago. Iron Age pigs are generally only raised in Europe for the specialty meat market, and in keeping with their heritage are generally more aggressive and harder to handle than purebred domesticated pigs.