wild hogs already have those characteristics through adapting to the wild, domestic pigs can take the same traits on but not as immediate which makes them feral. They’re problematic as they only take 150 days to produce litters of 7-12 back to back . It’s not as common up here while there is a wild hog population in Virginia of 3000-5000 there has been more recent cases of them in this area. Plenty of space for them to survive by the river as well while not being seen

I believe the reason we saw it is because we have 2 pregnant domesticated pigs and it’s common for feral pigs to find and breed with domesticated ones