Newt
Newts, as with salamanders in general and other amphibians, serve as bioindicators because of their thin, sensitive skin and evidence of their presence (or absence) can serve as an indicator of the health of the environment. Most species are highly sensitive to subtle changes in the pH level of the streams and lakes where they live. Because their skin is permeable to water, they absorb oxygen and other substances they need through their skin. Scientists study the stability of the amphibian population when studying the water quality of a particular body of water.
List of dragons in Dragon Booster
The yellow-bellied newt is a tiny harmless reptile which stands about six inches tall. It appears to be a scavenger and seems to be able to live in Dragon City quite well. Humans don't seem to be concerned about them any more than we are concerned about squirrels. These newts are obviously yellow. They have a frog-like face with bulging blue eyes and they have a tail that kind of looks like a fluffy. Newts are first seen in "Faster Than Fear."