We too cut the day shorter and take more trips out. When we went to Zion, Bryce, and Mesa Verde, we boarded our pets because we took day hikes there. In some rare cases, such as when we went to Natural Bridges National Monument, I stayed in the truck with the dogs while hubby hiked to the bottom to take photos. Sometimes when it's a short hike to a site, we take turns going and staying with the dogs. At the North Rim of the Grand Canyon, we parked the truck in the shade with the big dogs in their crates in the back, then took the Maltese in her soft sided crate slung over my shoulder, while we hiked around the trails at the top.