Reptiles (Reptilia) are a classification of animals characterized by breathing air, a cold-blooded metabolusm, laying tough-shelled amniotic eggs, and skin with scales or scutes. Amphibians (Amphibia) are a classification of animals that are ectothermic (cold-blooded) that metamorphose from a juvenile water-breathing form to either an adult air-breathing form or an adult water-breathing form.
Reptiles and amphibians are only superficially similar.
