A ban on exotic hogs has become official and went into effect this past Saturday in Michigan. Farms and ranches have until the end of March 2012 to rid their properties of all Eurasian/Russian swine. They were bred for hunting purposes and facilities that have bred them or allowed hunts for them, must get rid of all of them before state inspectors come around April 1st to start inspections. This gives the facilities/ranches times to set up hunts to harvest the remainder of their hogs.
When these hogs escape they form feral populations that are harmful to the environment, destroying birds and habitat. From MLive.com .