I work in remote wilderness mountain areas in the summers and it is amazing how many ppl do not realize or heed how dangerous wild animals are. Moose, griz, black bear and esp polar bears, buffalos, cougars to name just a few WILL charge and WILL attack and possibly kill you....you should NEVER go off alone and def get a telephoto lens...i totally agree. Ive seen a LOT of damage bears have done to cars, buildings, metal etc.....ripping things off to get to food....do NOT keep food near you or in your car in remote areas either. everyone be safe and have a great time on your excursions but yes invest in a good camera!