reptiles Cold-blooded vertebrates covered with scales (about 6,000 species) found mainly in warm countries; their four limbs are sometimes atrophied or absent.
examples of reptiles Reptiles: cold-blooded vertebrates covered in scales (about 6,000 species) having limbs that are sometimes atrophied or absent.
snake Legless reptile with a very long cylindrical body and tail, moving by undulation; there are about 2,700 species.