Frog - The frog is a very good example of amphibians because they are very common and popular animal. The frog represents the toad as well.
Salamander - Salamanders represent the newts as well. We chose the salamanders because they are more popular than newts.
Caecilians - Caecilians are snake like creatures and are different than the other amphibians. Sirens are also the same. We chose caecilians because these are more well known then sirens.