I saw the same thing happen in Yellowstone earlier this month. We came around the corner to a huge traffic jam. People we're all bailing out of their cars. I rolled down the window and heard a bunch of people blabbering about the "wolf". I got the kids out to see said wolf and wasn't real surprised to see a Coyote hunting in the grass about 25yds off the road. I told my wife to load the kids back in the truck and one guy standing there wanted to know why I didn't want my kids to see the "wolf".