Although they appear to be wandering freely, I understand that there are hidden barriers (moats, fences, etc.) on this attraction that keep some of the animals from getting close. No problem with that concept. Everytime I ride, however, we seem to get close to the rhino(s). The last time, we were very close. Are the rhinos somehow cleverly seperated from us, or are they in fact free and not considered any more of a threat than the freely moving giraffes?