nothing makes noise like a squirrel in leaves. Ive heard them before and just knew a pack of rabid deer were running my way, to only have it be a little gray squirrel looking for nuts. Now i dont get excited about any sound, i slowly scan the area but no movements. If it sounds close and you arent seeing a deer, its prob something else. If it is a deer and my stand is set up right, they are probably going to go past me so no reason to get in a tizzy