I had mentioned I was sitting in my van a few weeks ago smoking a cigar when some whacko walked up and asked for a light. Wilson the killer pug snarled and hurled himself over my lap and tried to attack this guy through the open window. The guy walked away without a word. A week or so later the same guy asked me for a cigarette. I told him I didn't smoke.
Later night he asked me for a cigarette. Third time. I told him he'd better remember me and never ask for a cigarette again. He go mouthy and I walked him backward. He even tried to raise his hand and I slapped it down. He finally decided to walk away. He said he "didn't remember me." He will now.
I find it amazing a so-called dumb dog made an instantaneous judgement and tried to kill this guy. He was absolutely right about what this guy is about.
I'll trust a dog's judgement about these things every time.