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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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Heat Stress in Pigs: What to Prepare for Before Next Summer - Dr. Joshua Selsby

Video: Heat Stress in Pigs: What to Prepare for Before Next Summer - Dr. Joshua Selsby

In this episode of The Swine it Podcast Show Canada, Dr. Joshua Selsby from Iowa State University explains how heat stress affects swine biology and why now is the ideal time to prepare for next summer’s challenges. He breaks down its effects on muscle function, immune responses, and long-term metabolic outcomes. Learn how early planning can protect herd performance when temperatures rise again. Listen now on all major platforms! "Heat stress leads to a cascade of biological damage, beginning with metabolic disruption and expanding across multiple organ systems." Meet the guest: Dr. Joshua Selsby is a Professor in the Department of Animal Science at Iowa State University. With over 15 years of research on skeletal muscle physiology and heat stress, he focuses on understanding how thermal stress disrupts swine metabolism, immune function, and muscle integrity.