Dan calmly chatting to a flyfisherman at the side of the road between West Yellowstone and Madison campground. Dan is obscured by JR Hartley, and you'll need to zoom in to see the beast in the centre of the road approaching holding up all of the traffic (you'll just have to take my word for it). Dan and I had just passed this Bison making sure we had a car between us and it. Just my luck, the car had an excited dog in it barking at us and the bison. Oh, and it was wearing a little vest with Rescue dog written on it. I guess he was the rare kind that first creates an emergency in order to justify it's wearing of a special jacket. My adrenal glands were working overtime.