A case in point is this Siberian tiger my photo tour group and I were photographing in China. I was able to catch this aggressive display because instead of lowering my camera and watching him directly, waiting for a great shot, I kept my eyes glued to the viewfinder with my finger on the shutter. In this way, I was able to capture a very dramatic image. Moments like this are very fleeting, and if you aren't ready to shoot instantly, the moment will be lost.I particularly like this picture because it looks like the illustrations I've seen of the extinct sabre tooth cats. Siberian tigers don't have four-inch long fangs like the ancient cats did, but this picture could very well depict what the sabre tooths looked like when they hunted and fought over food.