closeup on the head of a hell hollow slender salamander, batrachoseps diabolicus from merced river area, california

amphibia american amphibian chordata caudata merced north plethodontidae salamander slender usa westcoast animal area batrachoseps biology california closeup diabolicus from head hell herpetology hollow lungless macro natural nature newt outdoors predator river single tailed urodela vertebrate wild wildlife zoology