Cave salamander

Several salamanders that primarily or exclusively inhabit caves have commonly been termed "cave salamanders". Some of these animals have developed special, even extreme, adaptations to their subterranean environments. These adaptations include rudimentary (or even absent) eyes—thus the related term "blind salamanders"—or absence of pigmentation, rendering them a pale yellowish or pinkish color (e.g., Eurycea rathbuni). With the highly notable exception of Proteus anguinus, all "cave salamanders" are members of the family Plethodontidae ("lungless salamanders").