Yeah, talk to me like I've never been around hunting dogs. Take that same dog that's trained to not flinch around gun fire and walk them off leash next to a busy road (Prospect & Shields in Fort Collins in this case) and then pass someone riding a skate board going the same way in the cross walk. Suddenly, that super smart dog that's fearless of gun fire is now inexplicably afraid of the sound the skate board wheels make on the rough concrete. The dog then panics and goes out into traffic to avoid the sound that neither you nor I would think twice about it being afraid about. I was at that intersection waiting to turn left at the front so I saw the entire event unfold clearly. Had the teenager swerved to miss the dog it would have likely meant the loss of human life so the right decision was made, the dog died a horrific painful and slow death in front of everyone all while the dog's owner had the leash draped around his neck the entire time. Turns out that dog was also a hunting dog (I asked when I saw his RealTree camo collar & leash) and trained to not fear gun fire which is a very focused and specific type of training. To say that that dog now is afraid of nothing and will never react adversely to conditions neither you or I can predict proves your level of intelligence.
Love the way you call real life experiences generalizations because even if I hadn't witnessed these first-hand they would be any less relevant. The bottom line is I'm a dog lover and have watched too many dogs die a horrible death due to the owner's stupidity and ignorance to what's possible. You seem to fit this nicely since you seem to think nothing I have said is possible and there's no good reason for leash laws within city limits. I suppose you also think it's not possible to be mugged or attacked so why carry a firearm, right? The odds are good you won't get in an accident and your driving record is clean so why wear your seat belt, right? How is this different?