Seriously. A dog off leash snarls and barks at me when I'm walking on the street? I don't fucking think so. You're within your rights to kill the dog AND sue the owner if you're being assaulted by an animal (which doesn't necessarily mean being bitten, just threatened), so get yourself a stun gun or some mace and apply liberally. I'd recommend a loud stun gun, dogs are often afraid just of the noise alone. Don't let your fear of dogs control you. Fight back!