how about dogs!!!!!!!!! I cant beleive that nobody has mentioned them yet. I have had them ruin my hunt many times.
I also had them help me get my 10 pointer last year
the had run some deer past me at 10am and again at 11 am then at 11:45 am a 10 pointer was kinda sliping around the backside of where they cam from and he just slipped into about 10 yards from me