I do not go out often enough to get accustom to the noises. In addition I am the lightest sleeper that exists so everything wakes me. I have been camping all my life and the noises sound huge. To convince myself these are not bears or that lone T Rex not yet discovered I start the night outside my tent, lying down or leaning against a tree and just listen and look. It actually is pretty cool to listen and see what is going on. Sure enough the baddest sound in the forest is a dang mouse rustling in the leaves. Then I feel better that if the mouse attacked in the middle of the night I might survive.