I can't comment really on protection against a bear or other animal because around here(SW Virginia) our animals generally run off at full throttle. :lol:
A very real threat we have around here is the two legged version. Just a couple years ago while deer hunting, I was literally crawling on my belly(not uncommon for me) under/through a very dense thicket watching for deer legs with my 357 Blackhawk. I suddenly popped out into an opening that was never there before. In this recently cut out opening was an old house trailer that somebody had pulled in there. Laying all around were empty gallon jugs of iodine, and quite a bit of other evidence of a meth lab obviously in operation. Not knowing who all might be inside, I just eased backward on my belly into the thicket, and away from the area. After returning home, I called that counties sherriff's office, and reported it anonymously.
I've seen this type of situation play out more, and more over the years, and I know quite a few other fellows that have also stumbled into such things.
When I was a lot younger, I was about as wide open as you can get. I was forever getting myself into bad situations, and by doing such, I ran with a very dangerous crowd of low lifes. Before I turned 21 years old, I'd been shot twice, and stabbed or cut a few times to boot, with various other injuries in between. Trust me, I'm not proud of it, and I only mention it to make this point.
I've been in a few fire fights myself, and have witnessed quite a few more. They generally don't happen like the movies show. In most cases it happens extremely quick, with very little, if any time to react. It's very rarely ever a long drawed out thing with multiple reloads, and dozens of shots fired. Out of at least 15+(I'm guessing) fire fights I've either been involved in, or witnessed, I can't think of a single one that had more than a few shots fired. Most were over in two or three shots.
Personally, unless I was a cop going into a drug house, or something of that nature, I feel perfectly at ease with a single action revolver. If you're in the woods or feilds hunting, normally you'll have ample time, and opportunity to avoid possible danger, and if not, chances are a good accurate revolver would be better than you think in the hands of a man that could still shoot well under the stress of that kind of situation.