I'm amazed by their sense of smell and their survival instinct.

Sometimes a deer will just know something isn't right, and leave even though they didn't smell you, see you, or hear you. They have a sixth sense that keeps them alive. And it's equally amazing how this sixth sense doesn't apply to cars and highways! As smart, wily, and elusive as they are, they still stand in the middle of a road while cars are coming! [:@]

I'm also amazed at their ability to hide during the day time. I've spent alot of time in the woods and I've yet to see a "bedded deer". I see them after they bust out of their beds, tails waving as they run away. But I've never actually seen a bedded deer, even though I know where the bedding areas are!