I did shoot a doe two yrs ago two years ago that made a loud "moan" after i shot her. She dropped right where she stood when i shot her and made it as she was layin there right befor she expired. My little brother had one do it to him this year too... he did make a neck shot on it... there may be some correlation because the deer that did it to me was shot a lil high at the shoulder... most neck shots dont run off though when they are shot with a bullet.