Spanish explorers brought pigs to America for food in the 1500s; today, millions of feral swine roam at least 35 US states
When Spanish explorers brought pigs to what is now the southeastern United States in the 1500s, the animals were intended as a practical source of food rather than a threat to native ecosystems. Centuries of escapes, free-ranging livestock and later introductions of Eurasian wild boar changed that. According to the US Department of Agriculture’s Animal…
