I figure that they must remember some things - like where to eat and where to sleep. They are creatures of habit. However, this year I shot a doe with my bow in the presence of about 6 (or more) other deer. One of them was less than 30 yards away and watched me shoot. I am sure a few of them watched/saw me dragging out my harvest, too.
I drove by the spot the next day and there were four does munching on the grass. I stopped and took several pictures of them and they did not spook. The following picture is from about 65 yards away. Sorry about the quality, but I can only upload 30 k pics that start off at about 1.5 MB.



I dragged my deer out past the bush on the left. I shot it there and it ran about 25 yards (just into the bush). Why are the deer there? Why are they not scared? There was a good trail of blood from me dragging it out.