Life is about adapting to change, henceforth why we are RVless at the moment. There are many campgrounds that do have cabins and/or rental trailers. My suggestion would be to pick where you'd like to camp, get a listing of campgrounds in the area, and see which ones rent and accept pets in the rentals. There are books available as well-one I remember is called Traveling with Tover or something of that nature. I believe it only dealt with hotels, but there may be a camping equivalent. Try Barnes and Noble or an outdoor store like REI, Cabelas, LL Bean or Bass Pro. They often have books of that nature.