two very large neotenic adult coastal giant salamander , dicamptodon tenebrosus from north oregon

adult ambystoma ambystomatidae ambystomy amphibia amphibian amphibians bucket caudata chordata close coastal dicamptodon ecology female giant large macro mole molsalamander nature neotenic newt north oregon pacific salamander salamanders salamandras tailed tenebrosus topo two usa vertebrata vertebrate very white wildlife