Domestic pig are just that a wild pig that has been domesticated. A wild pig on the other hand is a pig that is free to live its life in the wild without human domestication. Many wild pigs were once domesticated pigs that got free. read more
Well, all swine share a common ancestor — the Eurasian wild boar or Sus scrofa. Wild boars are of the species Sus scrofa, whereas domestic pigs are of the subspecies Sus scrofa domesticus. read more