Growing up to two feet long, the Gila monster's size sets it apart from many other smaller, more agile Sonoran Desert lizards. "They did not read the book on how to be a desert lizard," says Dale ...

HABITAT: The flat-tailed horned lizard is most often found in desert scrub on sandy flats and valleys with little or no windblown sand, as well as on salt flats and gravelly soils. RANGE: The ...