To me the terms wild and feral are one in the same. Any hog living in the wild is wild... The only "wild swine" that is not feral would be a european/asian bloodline that never was handled in a domesticated manner.How do you distinguish between "wild" and "feral"?
Feral, by definition, is a domesticated breed/specie that has partially or fully returned to a wild state. Feral is not limited to first generation escapees.
There are actually very few true "Wild" hogs in the USA... Most all can be genetically proven to be all, predominately or partially from a domestic breed so feral and wild are fine by me...
Brent