A man visiting Yellowstone National Park recently had a very close call when he got much too near one of the native bison. The man was caught on camera taking photos just a few feet from the animal, which made its displeasure known.
First, the bison stopped grazing to stare. If a wild animal changes its behavior as a result of your presence, it's a clear sign that you need to back up and give it more space to behave naturally. The animal then began to raise its tail, make vocalizations and advance, which are clear signs of aggression.
