Vicious dogs not on 6-foot leash as required

The 6-foot leash rules are very clearly stated. There are many campers whose dogs remain the exception and don't abide by the rules. My leashed dod has been threatened by vicious larger unleashed dogs as I walk my dog more than once this month. So the camp host or ranger should , after warning the offending campers once, call the county animal control. This situation is way out of control.