closeup on a california ensatina eschscholtzii salamander, secreting antipredator milky secretion from the head glands

amphibia amphibian chordata caudata ensatina salamander eschscholtzii nature north american pacific plethodontidae us usa urodela westcoast animal biology california closeup endemic herpetology lungless macro newt oregon outdoors predator protected single tailed vertebrate wild wildlife zoology intermediate form secreting antipredator milky secretion from glands head