A friend of mine's ,that I worked with for years, sister was attacked and killed by feral dogs over on the pine ridge in South Dakota a couple of years ago . They have since thinned out the population of feral dogs there . Here where I live when anyone is bitten by any dog and they have to go to the ER depending on where it took place , the city police or sheriffs department has to be called and an investigation done as to the cause then a report filed . Even if it was your dog they have to report it and verify that it's rabies vaccinations are up to date . If it was your dog and it did bite for a reason like it being injured or in pain for some reason they don't do more then fill out the report and verify it's vaccinations . If it wasn't your dog or it's shots aren't current it goes into quarantine for two weeks and the owner pays for it's care if they can be located other wise if no owner can be located it's head is sent to the state lab for rabies testing . The county that I live in and the one to the north of us has the highest rabies rates in the state according to the rabies study done by USDA Wildlife Services a few years ago . I was fortunate enough to be able to be a part of that study and it was interesting . We live trapped skunks put them down without damaging their heads ,then sent the heads in to be tested .