A deer can see 310 degrees around itself (I believe I said, " can ALMOST see" ). Deer CANNOT focus on one location with both eyes which leads to very poor depth perception.

As far as the new furniture in the living room deal goes, not always the case. Ever put out a portable blind? Think the deer are saying to each other, " now how' d that get there I wonder? oh well..." Ah, no. Most of the time if not always, if something doesn' t move and they cannot smell it, they think nothing of it. If you are not moving, you' re not a threat. I' ve stalked deer in an open field to within 15 yards of them starting at over 100 yards away. They saw me coming the entire way, or at least they looked directly at me. But when they looked up, I froze. Since they have bad depth perception and the wind was with me, they had no idea if I was a tree in the middle of the field or how close I ever was to them. Try it sometime. I' ve even done this to deer while bird hunting - in no camo pattern at all!! As for the UV light BS - marketing gimmic.

The better question here is: Do deer have the knowledge and thinking capability to collect data, process it as rational as humans to confirm the human figure? No. They don' t. Move though, and you are now a threat.