If the American Southwest were a color, it would be burnt sienna - the color of baked adobe, deep canyons, cowboy boots, sunsets, desert plains, and mountains in the light of morning. Of course you would need to add a touch of polished turquoise, snowy white, cactus green, and deep, sky blue. Then you'd have a palette to match what you and your four-legged friend see when you go glamping in a pet-friendly rental in this wild and historical region of the United States. The American Southwest is overflowing with national park giants such as Carlsbad Caverns in New Mexico, the Grand Canyon in Arizona, Yellowstone in Wyoming, and Zion in Utah. Why not pack the leash and food bowl and go and discover their many dog-friendly hiking trails with your canine companion roaming freely? It is an area rich in natural and cultural history, where you can literally see the passing of time, both in the indelible artwork of the Native Americans and in the landscape itself.