... The ACO's response was, "If I was having continual problems, why didn't I just leave my guide dog at home?"

No, the dog that attacked wasn't a pit bull, but a mix that might have been mostly cattle dog. He also attacked by circling behind and had us pinned in the road for several minutes while I screamed for help. When the owner finally came, he just yelled at his dog, which responded with even greater aggression. I kept yelling for him to hold his dog, while my GD and I rotated in place trying to face the snarls and barks. He said his dog would bite him if he tried to grab it. Later, the ACO told me that he had gone to see the dog and it was a gentle dog. He implied that he saw no reason to enforce the leash law for this dog because it wasn't aggressive to him. I had to go to the city manager to get the dog picked up. Then the kennel worker under the ACO confirmed that at the animal control shelter the dog never tried to attack anyone. The dog was released in three days without a fine. The owner was requiresd by the judge to buy a dog license when the case came before him, which is supposed to be a requirement for all dogs including guide dogs. Nothing else was done. But the owner came to my door and complained that I had cost him money with my "harrassment"!