Yesterday I shot a pretty good buck that was following a doe. I thought I had spooked her because I heard her blow and then saw her jump across the trail I was on. Right after that I heard a grunt from where she came. I saw the buck in the brush and then he went out of sight and grunted again. I shot him as he tried to cross the trail where she did. My question is do bucks grunt at people or was he more than likely grunting at the doe. He didn't seem to be concerned with me or even know I was there - about 30-yards away.