Daily Postcard: A pair of pups pause to take in the view while hiking the Cerro La Jara Loop on National Dog Day, Aug. 26 at Valles Caldera National Preserve. Cuddly canine companions with their owners are welcome. For a safe and happy visit to National Park Service sites and other public lands, remember the BARK Ranger principles: B-Bag your poop, A-Always use a leash, R-Respect wildlife and K-Know where you can go. Learn more about visiting  Valles Caldera with pets at https://www.nps.gov/vall/planyourvisit/pets.htm. Courtesy/NPS