Had one years ago in Houston get chased by the neighbors GSD who came over their stockade fence getting met by my bulldog.
He must of emptied his dog spray next door, because he threw it at my dog. I stopped his ass from going over my short chain link fence. He was more scared of the dog then me. My dog stopped when I called him off, and came over by my side. He was an electric meter reader. I was tell my dog good boy and that really pissed him off! I made him call his supervisor out.
First thing he tells his boss was no sign. I was happy to point to the one on my locked gate. I made his boss go pick up his empty can of dog spray over by were he came in the yard.Those reader device have memos about dogs on them! I believe they are not allowed to hop fences either.