MINNEAPOLIS—An exploding population of hard-to-eradicate “super pigs” in Canada is threatening to spill south of the border, and northern states like Minnesota, North Dakota, and Montana are taking steps to stop the invasion.
In Canada, the wild pigs roaming Alberta, Saskatchewan, and Manitoba pose a new threat. They are often crossbreeds that combine the survival skills of wild Eurasian boar with the size and high fertility of domestic swine to create a “super pig” that’s spreading out of control.
