Bison, elk, bears, caribou, and ravens. I wanted to see animals in Yellowstone, and animals we saw. At one point we were surrounded by a herd of bison. Big headed animals. Despite their threatening looks, and grunts, our car escaped unharmed. The picture above was taken from inside the car; no way was I getting out. Yellowstone is also filled with thermal areas, there was no shortage of thermal pools, geysers, etc. The trees destroyed by the thermal activity make for beautiful pics don't you think? Unfortunately we cut our time in Yellowstone short, once the weather turned nasty and we almost floated away with our tent...damn the thunderstorms. How can it change from 30+ degrees, to freezing in 12 hours?