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Destructive ‘Super Pigs’ From Canada Threaten the Northern U.S.

Wild pigs have terrorized the southern United States for decades, destroying farmers’ crops, preying on native species and carrying a variety of pathogens that can spread to humans. The animals have mostly stuck to warmer regions, such as Texas and Florida, but they still manage to cause an estimated $2.1 billion in damage every year. 

Now, colder regions of the U.S. could soon be staring down their own swine foes: Canadian “super pigs.” These giant, intelligent hybrids of domestic pigs and wild boars are poised to invade from the north. 

“We have already documented pig occurrences less than ten miles from the U.S. border. Quite honestly, I think there have already been some in Manitoba going into North Dakota for the last five or six years,” Ryan Brook, who leads the University of Saskatchewan’s Canadian Wild Pig Research Project, tells Field and Stream’s Sage Marshall. “There is no physical, biological boundary at the U.S.-Canada border. There is hardly any kind of fencing to speak of. There’s a real risk of pigs moving south into the U.S.”

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Assessing Welfare Resources During Late Finish - Dr. Anna Johnson & Emma Coursey

Video: Assessing Welfare Resources During Late Finish - Dr. Anna Johnson & Emma Coursey


In this episode of The Swine Nutrition Blackbelt Podcast, Dr. Anna Johnson from Iowa State University and Emma Coursey from the University of Illinois discuss research evaluating welfare resources during the late finishing stage on commercial swine farms. They explain how feeder management, water use, space allocation, and pig health influence welfare outcomes and practical on-farm management. Listen now on all major platforms!

"Small resource issues can become larger welfare problems when multiple stressors interact across finishing barns."

Meet the guests: Dr. Anna Johnson / anna-johnson-05028a14 is the Morrill Professor of Animal Behavior and Welfare at Iowa State University. She earned her Ph.D. in Animal Sciences from Texas Tech University and completed her master's degree in Applied Animal Behaviour and Welfare at the University of Edinburgh. Her research focuses on practical solutions that improve farm animal welfare, including sow productive lifetime, animal-human interaction, environmental enrichment, and Precision Livestock Farming.

Emma Coursey / emma-coursey-183810241 is pursuing a Doctor of Veterinary Medicine degree at the University of Illinois College of Veterinary Medicine after earning a bachelor's degree in Animal Science from Iowa State University. Her academic interests include swine health, production, and animal welfare, with research experience evaluating welfare resources in commercial finishing pigs.