Yep....the two legged predators are typically by far the most dangerous one is likely to encounter. Even when backpacking, I like to maintain multiple 'layers' of redundant self-defense ranging from two german shepherds, edged weapons, which typically end up performing mundane camping tasks anyways, to what I lovingly refer to as my '185 gr. death pill dispenser.'
In places other than National Forests, where rifles are not viewed adversely, it's hard to beat a paratrooper stocked .30 carbine for general utility...some will debate the efficacy of the round, but I've never heard of any naysayer volunteering to be shot by one to prove their point. Ballisically, from a 16" barrel, the effects aren't that much different than .357 with a lighter (110gr) bullet and slightly smaller wouund channel.
For rougher country, I've always been intrigued by the big bore lever actions, i.e., .444 marlin, .45-70 etc.
My philosophy toward self preservation (be it at home, on the road or on the trail) is based on the axiom of the two hikers who are charged by a ravenous bear...The one hiker drops his pack, and quickly begins swapping out his hiking boots for a pair of running shoes. His partner says, 'you really don't think you're going to outrun that bear do you?" to which he replies, "I don' have to outrun the bear, I just have to outrun you." I think most predators, two-legged or otherwise, will cry off of prey that looks like it may be some trouble when something easier is available.
The .45-70 Marlin lever gun is a great weapon - I have one. It's a nice, handy piece and it's just fun to shoot. If you get one, do yourself a favor and spend a few bucks on a slip-on recoil pad - the wallop it gives your shoulder is brutal without one.
Our property abutts a National Forest and during hunting season we have to limit our outdoors activites because of stray bullets.