Yet another in a superb series of images.
Photography aside, are there not any realistic concerns about safety here? These are, after all, wild creatures, unpredictable, and while your knowledge and behavior I'm sure provide a reasonable measure of safety, are you not putting yourself in jeopardy with encounters at such close distances?
I forget his name, but there is obviously the story of that grizzly buy who eventually was eaten. Now from what I read, he was a bit crazy in many respects, but the same principle applies - these are wild animals, and you never know what can happen.