- Several species of horned lizards (often called "horny toads") inhabit Southern Arizona, with the Regal Horned Lizard (Phrynosoma Solare) being the most common in the Tucson area - They are characterized by their flattened, spiky bodies and a "crown" of horns, often feeding on harvester ants and using camouflage or shooting blood from their eyes to defend against predators