Given how environmentally destructive - and dangerous - feral hogs are, I was rather surprised to read how big a problem people deliberately introducing them to different parts of the US is. Not in the past, when people were ignorant of the problems, but now, by people who know what they’re doing is incredibly damaging, but don’t care because they want to hunt. (Hello, climate change metaphor…)
Not so much. They’re not mostly predators, and the animals they do eat are small (i.e. also eaten by predators that weren’t eradicated by humans). And they eat everything else and reproduce quickly. So they’re just introduced pests, damaging to the environment, not re-filling any emptied ecological niches.