Sigh. I suspect that you know the answers to these questions as well as I do.
What you are trying to get me to say is that behavioral traits can be emphasized by selective breeding, and that different breeds can and do carry different behavioral traits, both of which statements are true, as you full-well know… although I’m beginning to suspect that your knowledge on this topic is limited to the general “shepherds herd, retrievers fetch” level (which still doesn’t explain how dog-fighting equates to “murdering human beings”).
The reason I am not going to get into an in-depth, question-by-question discussion of behavioral traits as they relate to genetics and dog breeding, is that I suspect you don’t really care about the answers. If I’m wrong about this, and you really do want a thoughtful reply to your questions, and how those answers relate to the topic we’re discussing, then I’m game, but before I put out that effort I will need to see some (small) effort from you.
What I will need from you, and what I have been asking for from the beginning of my involvement in this thread is some proof that:
-a genetic background of selective breeding for dog-aggression and tenacity is linked to human-aggressive traits or an increased rate of dog-bite incidents (bonus points for demonstrating any remotely plausible reason that they are particularly more dangerous than any given breed selectively pressured for human-aggressive traits, or, for that matter, any given breed selectively bred for the killing of any other species of animal).
or
-That every dog exhibiting the phenotype commonly associated with pit-type dogs has, in fact, a genetic history of pit bull blood.
or
-That concerted efforts to eradicate dogs with the pit bull phenotype lead to a reduced incidence of dog bites or dog bite related fatalities
I’ll take answers to any one of the three, I’m not picky, although I’m particularly interested in your argument for the first point, since that’s the crux of your belief in the mythical “pit bull psychosis”. This last point is important, because, although you state that you don’t support breed-specific legislation, if your assertion is true: that pit bulls are inherently more dangerous than all other breeds, then certainly legislating against them and killing them by the thousands should do something useful?
It doesn’t. The reason it doesn’t lies in the answers to points one and two, which are extensively addressed in the AVMA’s “dangerous dogs” report. Have you bothered to read it? Or did you, and do you believe you know more about the root causes of and genetic links to human-targeted canine aggression than the American Veterinary Medical Association?