The 2nd episode focuses on the abundant and diverse creatures that have adapted to desert life in this unique environment: from big cats, giant hares and killer insects, to extraordinary reptiles and even a bird that can run at high speeds. It's home to the world's largest cactus, the saguaro. Thanks to the monsoons that fall across the desert, both in the winter and summer, the Sonoran is the most biologically diverse of North America's four deserts. There are over 96 endemic reptiles and 2000 native plants species. Here you see animals as diverse as the coati, the horned owl and even the rarely seen mountain lion.