My wife, who is no shrinking violet, told me she was afraid of that dog. When we would visit...it would just sit there, watching us the entire time. Just watching. It was indeed a bit unnerving. It was probably above 180 lbs, and it would just sit silently looking at you the whole time.
Of course, they had their house broken into five times, and after they got the dog, that stopped, but...they had to live with the dried dog slobber everywhere.