Reptiles are known to be a whole animal family. There are different animals that will be considered as reptiles. One of the things that you can count on is that most of the reptiles that you will see will come with scaled skin. This will make it easier for you to distinguish reptiles from amphibians because there are amphibians that will have smoother skin.
Lizards are known to be animals that come with four legs, and they are part of the reptile family. You will see that some of them will have crusted scales, but there are also some lizards that will come with smooth skin, which is why some people find it hard to distinguish. Lizards will also come with tails. Some of them may grow to be huge.