My favorite instance since becoming a dog owner again after a 14 year hiatus was a pastor delivering food boxes to my mom's senior housing complex. He went out of his way to come over to the park bench Mom & I were sitting on to ask me if he could pet my dog. Except picture him asking as he starts to both reach out and touch my dog and crouch down to my dog in essence hovering over my dog. At this point I've only owned him a couple of months (pound rescue) so I can't vouch for him (can any owner really vouch 100% for their dog 100% of the time?).
So I ask him," Why ask me when you are already touching my dog"?
Blank stare so I reach out & touch his face then ask him if it's alright if I pet him.
Hubby says my dog should wear a sign that says beware of owner.