GECKO or IGUANA are both types of lizards, belonging to the infraorder Gekkota. Geckos are typically small, nocturnal reptiles found in warm climates throughout the world. Iguanas are larger, diurnal lizards native to Central and South America. Both species have adapted to their environments with specialized toe pads that allow them to climb vertical surfaces and a prehensile tail for balance. They also have a protective layer of scales and a long lifespan.