[BB_TX]

I have not encountered it with our various 85 lb Golden Retrievers, but the topic comes up regularly on another RV forum. And apparently some RV parks do enforce the rule. And the general consensus is that it is driven by the park insurance carrier rather than the park itself. From what I have read, some have the specific breed restrictions, some have a size restriction. Goldens don't fall into the breed restriction, but could fall into the size restriction.

The problem is not that those "dangerous" breeds are more likely to bite than a smaller dog. But that when they do bite they can inflict serious injury where a small dog might just break the skin.

Ultimately you will just have to check ahead to see if a specific park has such restrictions. And the "what they don't know" idea is not good unless you intend to let your dog do their business inside your RV. Let them out to pee/poop and the park owner/manager see them and out you go looking for a different park.