Texas horned lizard blunt snout, which give it a decidedly batrachian appearance. "Phrynosoma" literally means "toad-bodied" and "cornutum" means "horned". The lizard's horns are extensions of its cranium and contain true bone. The Texas horned lizard is the largest-bodied and most widely distributed of the roughly 14 species of horned lizards in the western United States and Mexico. The average Texas horned lizard is in snout-vent length, but the upper boundary for males is and for females it is . Although its coloration generally serves as camouflage against predation, when threatened by a predator, a horned lizard puffs up and appears very fat,
Texas toad water bodies for breeding include the Gulf Coast toad ("Incilius valliceps"), the green toad ("Anaxyrus debilis"), the Great Plains narrow-mouthed toad ("Gastrophryne olivacea") and Couch's spadefoot toad ("Scaphiopus couchii"). The Texas toad sometimes hybridizes with Woodhouse's toad ("Anaxyrus woodhousii") or the Great Plains toad ("Anaxyrus cognatus"). The Texas toad has a wide range and a large total population and is one of the most common toads in the southern United States. It is tolerant of changes in its habitat and is present in cultivated areas as well as grasslands and savannahs. No particular threats have been identified and the International