Look folks, we really don't know what was said and the communications on both sides. It may very well be that this dog is a service dog, let's not make assumptions. There was a problem with communication. I'd also be upset after having reservations telling the campground that I had a shepherd, getting the OK, putting down a deposit and driving 1400 miles and then being told go elsewhere. The campground and personnel has some responsibility if this happened.
Dog bite is such a touchy subject and has been terribly politicized and sensationalized by the media. It is a serious issue, but breed specific legislation and rules don't realistically address the problem and may give a false sense of security to the uninformed.
There have been dog bite studies that demonstrate that bite incident statistics as reported are way skewed by mis-identification of breed, after all it must be a pit bull, right. Also, there are so many pits and pit crosses now days that you'd expect to see a higher number of bites involving pits. What is really significant is the number of bites in correlation to the number of dogs of that breed and the severity of the attacks.
But all this is pretty useless because so many people are ill-informed about dog behavior and training, there is poor breeding, there are unreasonable expectations about what a dog can/should or shouldn't do and very poor training of people in how to interact with dogs.
Doug, DVM