Author(s): STEPHEN S, BEN C WEST
Feral hogs ( Sus scrofa ) have been present in North America since the arrival of the earliest se tt lers in the sixteenth century. Colonists ori- ginally released hogs because of the animals’ ability to survive on their own and to serve as a ready food supply for se tt lers. Since that time, hogs have expanded their range and now are present in 40 of the 50 United States and parts of Canada. Their rapid expansion is similar to that of other introduced species, and, as a result, they are generally classi fi ed as an invasive exotics, along with hundreds of other plant and animal species. However, feral hogs may pose an ecological threat that far surpasses that posed by other invasive vertebrates.