yellowstone park-i want to camp in one place, where should I

I have been taking a dog to Nat'l Parks for over 50 years. Never a problem but not on trails, or in buildings and they must be kept on a short leash. They just expect pet owners to be responsible and abide by the rules. It could be very warm in an RV for a pet in July or August. My dog liked to stay in the PU bed when I was towing an RV and parked to see sites.