It amazes me how people think they can see when in truth they are blind. I used to have to deal with people like that when I carried mail. Many people would tell me that the dog wouldn't hurt a fly or he doesn't bite. Guess what, I'm the mailman, in uniform, and the dog doesn't always pay attention to the chatter around them. I invade his space, he bites. I learned to read the dog and not the owner. And if your dog looked at me cross-eyed, you didn't get your mail. Take it up with the supervisor. Other people have since told me the same thing, but I know better. If I see a dog and it's behavior carries the flags I've learned, I am probably correct in my assessment of the danger in the situation.
Don't tell me the dog doesn't bite. Tell me it's name.
(If you haven't listened to it lately, get the Iron Butterfly album Ina Gadda Da Vida)