Camping w/o a gun? Are you crazy? I always carry my carry weapon anyway. Camping, shopping, eating, sleeping. When I am camping I usually add weaponry not leave it behind. M-4 or shotgun or both. My usual camping trip is near water to go skiing, so when I am out on the lake I usually lock my weapons up in my father-in-laws camper. Except for my handgun which I carrry with me on the boat.
Even if I was in an camping area that was totally devoid of animals, people are still just as bad, if not worse. As it is, bears, cougars, and lynxes oh my are fairly common. Bears... I don't know if my .45 with hyroshocks would do the job, but they'd find my mauled body next to an empty pistol.