Feral Hogs in Alabama
Alabama's Treasured Forests , 2001

Nelson, D.K., Causey, M.K.

True wild pigs are not native to Alabama or the New World. Wild swine in North and South America, which may include European wild hogs, feral hogs and hybrids between the two have been introduced. Pigs were domesticated 8,000-9,000 years ago and have spread throughout the world as livestock. In many areas they have escaped or been released from domestication and reverted to a wild, free-ranging or feral state. Published estimates suggested a U.S. population of between 1 and 2 million feral hogs in 1991 and they were the most abundant, free-ranging, introduced ungulate in the U.S. In 1989 wild hogs reportedly occurred in 19 states, Puerto Rico and the U.S. Virgin Islands. In the 1980s feral swine in the South were located primarily in the Coastal Plain from Virginia south to Florida, and west to Texas. As early as the 1950s concentrations of wild swine in some areas of the Southeast were reportedly as high as 75-100 animals per square mile. Good general review of feral hogs.