The two closeups of the bison were shot from our truck. They were laying right along the road. The first buffalo caused a LONG traffic pile up. The mule deer was right near the Dragon Cave and the bison in the last photo were across the road from the cave. We walked down a path to get the photo, but the bison were across the river from us. Our friends saw one idiot get within 12' of a bison so he could get a photo. He was lucky that was all he got.