I agree with the others that a tired dog is a good dog! We left ours for 7 hours (after a vigorous walk!) so we could take a boat tour in Valdez, AK; and they were still sound asleep when we returned...LOL!
Do some driveway camping - once your dog realizes that the RV is also "home", being left behind is normal and nothing to get excited about. Of course, you also are creating a monster - once they realize that the RV takes them to wonderful sniffable places, at the first hint that you're packing for a trip - your dog will be stuck to you like velcro ;-)
