Swine are pigs; feral swine are free-range pigs, roaming the countryside without benefit of agricultural tending.
Evidence for the existence of feral swine
The Michigan DNR Feral Swine Update of 2009 reports 25 sightings in the past 10 years, with 7 swine kills.
Public Act 69 of 2010 legalizes the shooting of feral pigs.
George Albercook was running through his Scio Township neighborhood Wednesday when he spotted an animal that he at first thought looked liked a wet wolf.