I see you walking down the sidewalk nonchalantly with your unleashed dog, not a care in the world. Of course your full-sized German Shepard is a GOOD DOG and the little sweetie couldn't possibly misbehave. As you swerve into the local bottle shop to pick up your beers for the day, everyone sees the problem but you, but they're not going to confront a guy with a pet of an ilk that has a history of biting people's arms off. You're far too full of yourself to think that other people might have been attacked by dogs in the past and are gripped with fear when you round the corner. You're far too caught up in your self-absorbed, conceited world to understand that all the dogs you pass that are lawfully on-leash might cower or freak out in terror at the prospect of not being able to defend themselves from yet another dog left off-leash by it's leash-law flouting, jackass owner. Nobody you walk by in the street, nobody in the shops you visit knows your dog is a good dog, or what it would take to make them not one. Leash your fucking dog.