n Mongolia, among the Kazakh people of the Altai mountains, there is an ancient poem that lists the things every true nomad should have. Chief among these are a “brave eagle” and a “swift dog.” Of course, a fast horse and a loyal wife are important too, but there is a reason that eagles and dogs win the top spots. For thousands of years, trained golden eagles and sighthounds—sleek sinewy dogs built for speed and endurance—have worked together in pursuit of hare and foxes.