Now I remember it was you who had mentioned Belschick on another thread
What you describe sounds very much like my dog, very, very intense (which personally I prefer a bit of a "lighter" dog esp in work) he does tend to make people uncomfortable with how intense he is. Also very, very dominant (not to me but everyone else.) I'm curious about where "nerves" come into play with a dog like this? I know lots of people seem to believe that a lot of the behaviors I talk about with Havoc are just weak nerves (obviously not being able to SEE the dog plays a huge role in assumptions) but are dogs like this naturally a bit on the nervy side? Or is it just dominance, and aggression?
You must be careful, as I have found in the dog world as opposed to say, my work field, many of the standard words lack clear definition.. compounded with that they describe intangible things... and what is meant when a word is used changes anywhere from subtly to dramatically from person to person. This greatly hinders communication. The words I see people struggle to *clearly* align on a single meaning are: *nerve*, defensive drive, aggression, dominance.
So my point is what one person would call "weak nerves", one might call "natural suspicion", or "sharpness", or "civil aggression", or "social aggression", or "aloofness".
If I told you Jäger growls at any men who walk up to us, you could fairly conclude that he is fear aggressive and unconfident just as fairly as you could conclude that he is highly dominant with high suspicion and has high civil & social aggression. In either case I haven't given nearly enough information (and I don't believe I could give enough purely with the written word or even a video.. one must actually observe the dog) to make a fair assessment
Only you, through training and meticulous analysis of your dog, coupled with an honest ability to put egos down as much as is possible and say "am I really objectively and unbiasedly analyzing my dog", will be able to determine your dogs makeup. When you find yourself being able to predict his reactions to the world with a high degree of reliability then you probably are on target with the assessment. When you have many "I didn't think he'd do that", or "He's never done that before" moments, then its time to go back to the drawing board and see where you judged incorrectly.