Invasive Canadian ‘super pigs’ boarish-ly hogging northern US states — What’s at stake?

… fecundity of farmed pigs in Canada with the survival qualities … , which helps them withstand Canadian winters.
A single sow may … North America, despite not being native to the continent.
Before the … to just release the animals, Canada’;s issues began in …… fecundity of farmed pigs in Canada with the survival qualities … , which helps them withstand Canadian winters.
A single sow may … North America, despite not being native to the continent.
Before the … to just release the animals, Canada’;s issues began in …