Feral swine is actually a species of wild pigs that were imported from Europe and Russia. These could be a combination of Eurasian types that were either imported here so that they could be used for hunts or those imported earlier to be a source of immigrant food supply. These animals took to the American climate and geography easily and propagated.
These will not look at all the same as domesticated pigs, having more bristly hair that makes them look like the wild designation they are often called. Today there are still many areas in the country whose hunters prefer hog hunting. And these pigs really know how to make a fight for it that they belong to the more challenging wild game that can be hunted here.
This animal is hardy as their name suggests, and they have learned to survive in packs or individuals on the continent. Many roam the remote countryside, and here is where the hunters like their boar hunts to be. The tradition is a European one there will still many of the type roaming the forests of Europe and legends and traditions have arisen from it.
Many European settlers in America looked for the same kind to hunt here, but were disappointed with turkeys and deer. Although these were challenging in their own ways, the hogs have a cult relationship with hunters that goes back a long way in Europe. The settlers decided to have these as food supply they can look for in forests.
The meat of this type will take a little getting used to. There are family recipes for cooking swine like these, and they can take longer and are more complex to do. Some of the heads of the most challenging animals were dried, cleaned up, stuffed and then hung on manors or hunting lodges throughout the European continent.
This attests to the old time popularity of this sport, and for folks in America it is a spiritual connection to their roots. Also, there might be utilitarian or community concerns that are related. Because packs of these roaming the countryside can spread infectious diseases and can destroy farm plantings and the livestock there.
Thus, for the community, when a pack is sighted and thought to be heading their way, local huntsmen can often band together to hold them off. These pigs will be discouraged to continue on their path if too many of them get killed. They have a native intelligence which tends to be survivalist rather than truly destructive.
It is simply that these packs can get bigger and require much food to feed. And anyplace which has a plentiful supply is certainly a preferred destination, except that humans could be there to stop them. This becomes a game for both the pigs, who want something to eat, and humans who do not want them destroying their crops and cattle, and can eat them as some sort of prize.
For those hunting on weekends or are professional hunters, locations for these can be valuable. Packs and groups are always on the move, but satellite systems can locate these. The hunters, during the days they are out looking for the wild ones, will follow the trail of a group and hunt them down like buffaloes of yesteryear. These are not in danger of dying out since even this is regulated today.