Definitely look at the left side of the page for lots more info.

The best "bed's" I have found for sleeping on are pine needles or leaves as BillStephenson said. Warm and comfortable if chosen wisely. You do need to look over your chosen site carefully to look for and avoid surprises( bugs, copperheads, ect.).

Bears ARE opportunist's, as ETSU Pride said. Back in the 60's, my dad used to lock our 4 backpacks together with a bicycle lock to keep people from stealing our packs in certain parts of the Sierra Nevada. Didn't keep the bear from raiding the pantry though; one got a full day's food before we discovered him/her and chased the bear off. I was 10 at the time and that event left an indelible mark on me as far as proper food storage and bear behavior.