An invasive species of feral Canadian ‘super pigs’ could spread into the US

… AP, an expanding population of Canadian “super pigs” … , and Manitoba, the Canadian provinces directly north of the … agriculture (crops and livestock), native species and ecosystems, and … In turn, states bordering Canada are starting to prepare …… AP, an expanding population of Canadian “super pigs” … , and Manitoba, the Canadian provinces directly north of the … agriculture (crops and livestock), native species and ecosystems, and … In turn, states bordering Canada are starting to prepare …