I will be VERY surprised if the answers to this one deviate much from the sound answers given by the first 2 posters.
Makes my skin crawl to imagine someone using their scope to determine if that is a deer.....or my wife!....coming through the woods!!!
Leave the rifle down until you've determined WHAT is out there. And then, and only then, look at it more closely as you decide if the deer/hog/elk/bear/whatever.....meets the legal, ethical and personals standards necessary to ultimately pulling the trigger.