This bison, along with 2 others, decided to visit us while I was making breakfast. He actually came up behind me very quietly, and I didn't know he was there until he snorted angrily. I turned around and he was about 15 yards away and staring at me. After I slowly edged on the other side of the camp fire, he sat down about 10 feet away from where I had been squatting. (Slough Creek, Yellowstone NP, May 2005)