Not hunting, but the strangest thing I ever saw a deer ever do. Many years ago my brother and I drove up into the North Georgia mountains for a day hike in late February. It was COLD, with a couple of inches of snow on the ground. We were driving along a mountain trout stream when we rounded a curve and caught a small buck crossing the stream. He was out in the open and decided instead of running to just drop down and curl up in a ball in the stream. We stopped within 10 yards of him and he looked just like a rock under the water in the stream. Only his small rack, eyes and nose were above water.
After about 30 seconds or so he figured he was caught and simply stood up, shook the water off and continued across the stream.