Comment by rustyconover

I'm not a biologist, but I grew up in West Yellowstone around the time wolves were reintroduced. Their return—and its impact—has been extensively studied by experts far more qualified than me.

That said, I believe wolves had a profound effect on the Yellowstone ecosystem, particularly on elk and deer populations. Before their reintroduction, those species had few natural predators beyond hunters, vehicles, bears, and the occasional mountain lion. The imbalance led to overgrazing and the spread of diseases like Chronic Wasting Disease (CWD) in elk.