My buddy up in the mountains of W NC used to raise and train GSPs. Good hunting dogs. But... his male was extremely territorial, to the point that he might just try to kill any other encroaching male.
The only animals that scared that dog at all were bears. Even so, he'd jump up on top of my buddy's Jeep, and bark at bears in the yard from the rooftop, instead of running to the house.
No fear of guns at all. Problem with that was, I tried some target shooting at my buddy's cabin one time. Bogey (the dog) ran out in front of me, every time I fired a shot, looking for the bird. Kind of hard to have fun with an AR15 when you have to cease fire every shot...