There are over 20 species or types of salamander in Texas. In fact, the United States has the highest diversity of salamander species in the world. Salamanders are found in other parts of the world too and can range in size from the 2 cm long minute salamanders that live in Mexico to the 1.8m long Chinese giant salamander. The salamander order includes newts, waterdogs and eel-like creatures called sirens and amphiumas.