Nope, this isn’t click-bait. You know, one of the articles with the really eye-catching title that is a complete letdown once you read further? This isn’t one of them. Wolves had been all but eradicated from the northern US, and were reintroduced in Yellowstone National Park in 1995. The effect they had on the park is truly astounding. If you didn’t have massive amounts of respect for wolves before, you will now.