WELCOME ! I spent some significant time in Jackson Hole during my youth- fortunate to have some hospitable relatives who own a home by the fish hatchery (RIP, Aunt Martha), and I regularly return to enjoy "God's Country", praise the Lord !
http://www.npr.org/sections/thetwo-way/2016/05/16/478279342/baby-bison-that-was-placed-in-a-van-by-tourists-in-yellowstone-is-euthanized
Vk