i agree with Hardluck71, i recently shot one doe in a group of five and two took off and two other ones stuck around. i was hunting out of a tree stand and shot my .30-06 at the deer at about 55 yards. not only did the two other deer run away, they kinda ran towards me. then i shot on of the two that didnt run away. i think they may have not run because i dropped the first doe with one shot in her tracks. i shot both of these deer within 5 minutes. i think they can definitely hear the gunshot, but if they dont know where it came from, they dont know where to run.