hannibal,
I have to disagree. Guard dogs in particular tend to be trained to obey orders from their handlers. What I was suggewsting is that you may be able to assume the authority of a handler, even if just for a moment.
Actually I have firsthand experience in this against a trained doberman. At the time I probably weighed 145 soaking wet so I don't think size had anything to do with it. Years, actually decades ago, I was working a third shift security gig that required me to leave our main facility and walk a couple of blocks to a satellite building a couple of times a night. I was unarmed save for a four cell maglight. (Don't get me started.

) Across the street was a lumberyard. Night security at said lumberyard was a large doberman behind a chain link fence. He would bark and growl like crazy at me every night when I walked by. I would calmly say "hi" and that I was glad that he was on the other side of the fence. One night, a little before dawn the doberman barked at me and when I looked over, he was sitting on the other side of the fence, smiling evilly at me. As he got up and started advancing on me, I loudly commanded him to get back in his yard. He stopped and looked at me, trying to figure out if I was in the chain of command. He started my way again and I took a step toward him, clapped and issued my command again. This time he bought it. He went back to his side of the street, but didn't go back under the fence. I went on and did my check of the remote building as the dog ambled along his fence in th eopposite direction.
A few minutes later I was heading back to our facility I saw a guy in a suit running flat out in my direction with the dobie right on his heels. I shouted at the dog and pointed across the street. He immediately obeyed, this time ducking under the gate. The guy said something to the effect of "I thought I was gonna die! Why don't you have your dog on a leash?" I smiled at him as simply said "He's not my dog."

I have repeated this on several occasions since then, but never with quite as much satisfaction.
All this being said, I am very happy to NOW live in state that allows for legal concealed carry. I like the idea of having a walking stick to ward off a pest, but if it goes beyond that, I'd prefer something moer lethal.
With a pack of dogs who have been running deer, I think I'd prefer to climb a tree!
-- FLIX