Nytmare
David Jose
Bear attacks do happen, but a quick check on wikipedia for fatal bear attacks in North America resulted in 28 deaths - between 2000 and 2010. About 3 a year.
I'm not a naturalist, but I'd assume those numbers would be extremely different if you scaled them back to a point where there were only a handful of human beings, the bears natural environment hadn't been paved over, and the bears weren't hunted to near extinction.
I'd also assume that the rules change when it's predators protecting their established territory from intruders and not just animals looking for food.