See doctor and call local police office to report the incident. You don't want that dog to bit someone agasin.
h*r
9 楼
You have to report it. If the dog has bitten other people before, this dog should be put into sleep ; if the dog hasn't, it's a good lesson to teach to its owner that she/he should leash the dog well.
call the police; see the doctor; get tetanus shot; get the owners insurance info (if he's insured) - you'll have to deal with his insurance company for a while.