Most Rez dogs spend their lives under open skies and have to contend with extreme temps and lack of food. There's nothing like a Rez dog- loyal to the core, hardy, trail-savvy, and so grateful for a helping hand. My best trail dogs and companions have all been Rez dogs I rescued over the years and they are like a breed unto themselves. The living conditions for most the strays on the Navajo and Hopi Reservations in northern Arizona enable only the hardy to survive but even then it's not…