Yeah, I've always been curious about this too. The article describes 3-year-old pigs roaming the forest, so that sounds very close to a wild lifestyle compared

Yeah, I've always been curious about this too. The article describes 3-year-old pigs roaming the forest, so that sounds very close to a wild lifestyle compared to a modern pig that spends its whole life in a small pen and is slaughtered at 6 months old. I wonder is it just age that causes fur growth? Hunger? Not having 4 walls an siblings to rub against? Exposure to the elements?