i would at least file a police report. this way two things are happening. #1 you are alerting the police that the dog does bite. the dog might bite someone else and do more serious damage. the owner could then say that is was the first time since you did not file a report.
#2 if something just happens to be wrong with you in the not so distant future, you will have a record that the attack did happen.
check your local codes. some areas require that all dog attacks be reported.
glad to hear you weren't seriously hurt.
