Actually I have 3 mail persons who alternate ( has been the same 3 for about 6 years now). They don't even get out of their car at a house with no dogs. I know all of them, they know my dogs don't bite, but the criminals don't know that. My outside dogs are penned. It's the inside ones that will bite. When my inside ones go out, they are on leashes. As far as children, my outside dogs love them. A child, or anyone else for that matter, comes inside I put the dogs up first. I'm not exactly irresponsible.
I guess maybe I believe things wrong. But I think if I pull up at your house and you have signs warning of dogs and I still get out instead of blowing my horn and waiting for you to come out, then most of the blame is on me. Why should I sue?