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,
Carchi Andes toad crops is polluting the species' habitat. An unknown intrinsic factor may also be responsible for the species' scarcity. Carchi Andes toad The Carchi Andes toad, "Rhaebo colomai", is a species of toad endemic to the western slopes of the Andes in northern Ecuador and southern Colombia. It is listed as a critically endangered species due to a restricted range and habitat loss. "Rhaebo colomai" are medium-sized toads: males measure and females in snout–vent length. This species is known only from three locations: the type locality ("Cabacera del Rio Baboso, cerca a Lita', Carchi Province, Ecuador"), one other locality close by