Genus Dicamptodon is a group of salamanders that are commonly referred to as the Pacific giant salamanders. There are various synonyms for this particular species, including Dicamptodon aterrimus, Dicamptodon ensatus, and Dicamptodon tenebrosus. These salamanders can grow up to 13 inches in length and typically have a dark, mottled appearance with yellow or orange markings. They are found in the Pacific Northwest region of North America, living in mountainous areas near streams and rivers. Due to their sensitivity to habitat destruction and pollution, they are considered an indicator species for the health of their freshwater ecosystems.