Our cat has been around so many dogs he don't really see them as a threat, in fact has a REALLY good friend in Tampa that is a Beagle. Campground dogs tend to be cat lovers in general.
Dogs don't all know that though, and on occasion they will attempt to attack him since they think cats are enemies. So far, he has ALWAYS came out the winner, doggie just trots off to whimper and lick his wounds.