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,
Arizona toad so the International Union for Conservation of Nature has assessed it as being of "least concern". Arizona toad The Arizona toad ("Anaxyrus microscaphus") is a species of toad in the family Bufonidae. It is endemic to the southwestern United States, where its natural habitats are temperate lowland forests, rivers and streams, swamps, freshwater marshes, freshwater springs, ponds, open excavations, irrigated land, and seasonally flooded agricultural land. The Arizona toad was first described by the American herpetologist Edward Drinker Cope in 1867. He named it "Bufo microscaphus" and the type locality was Fort Mohave, Arizona. It was commonly known as the