Worrying about being eaten by a black bear or a cougar in MOST angling locations is about as relevant as worrying about being killed by lighting or eaten by a shark. Dogs are another f'ing story. Honestly mace/spray and a small (3-4" will do) knife is more than enough, but I certainly don't object to anyone carrying guns. But I agree, that in a piss you pants moment with a charging/snarling dog moment...you're likely to suffer marksmanship issues. Mace/Pepper is a cone of incredible discomfort, and easy to hit a moving target. Should a dog latch on, a small knife should be sufficient to end the conflict, though not without some injury. But if you are actually attacked by a predatory mammal, injury should be expected. If you completely lose your cool, you could have an RPG. It won't matter.