Amphibians
Black Salamander
Aneides flavipunctatus · also called black salamanders
Pick up a black salamander carelessly and it may actually bite you, a level of defensive assertiveness unusual for a group of animals generally content to just sit still or flee. This dark, secretive lungless salamander also climbs better than most of its relatives, gripping rough surfaces with a semi-prehensile tail few other salamanders can match.
Overview
The black salamander, Aneides flavipunctatus, is a lungless salamander restricted to cool, moist coastal and mountain forest of northern California and southern Oregon. Breathing entirely through its skin, it hunts small invertebrates at night and shelters in leaf litter, logs, and rock crevices.
A grip, and a bite, unlike most salamanders
A somewhat prehensile tail supports modest climbing ability, and the species is notably more willing to bite defensively than most salamanders. Eggs laid on land skip any aquatic larval stage entirely, hatching directly into miniature salamanders, with females often staying to guard the clutch.
Status
Least Concern — reasonably common across suitable cool, moist forest, though locally sensitive to logging and drought that dry out its ground-level habitat.
Black Salamander: common questions
Why does the black salamander bite more readily than most other salamanders?
While the exact evolutionary reason is not entirely settled, the species' more assertive defensive biting behaviour, compared with the generally passive responses typical of most salamanders, may relate to defending a valuable and limited shelter site or territory, or simply reflect a more generally defensive temperament within this particular genus. Regardless of the precise cause, the black salamander's willingness to bite firmly when handled or threatened is a distinctive and frequently noted trait among researchers and reptile and amphibian enthusiasts familiar with the species.
Can a black salamander really climb using its tail?
Yes, the black salamander and several of its close relatives within the same genus have a somewhat prehensile tail capable of gripping and wrapping around branches, rough bark, or similar surfaces to a modest degree, providing additional support and stability while climbing compared with a purely straight, non-gripping tail. This climbing ability, while not as extensive as that of some specialised arboreal animals, does allow the species some access to vertical surfaces beyond what many strictly ground-dwelling salamanders can manage.
Does the black salamander have a tadpole-like larval stage?
No, the species undergoes direct development, meaning eggs laid in a moist, hidden location on land hatch directly into fully formed miniature salamanders, completely skipping the free-swimming, gill-breathing aquatic larval stage found in many other salamander species that rely on ponds or streams for their young to develop in. This frees the black salamander from any dependence on standing or flowing water for successful reproduction.
Why is the black salamander restricted to such a narrow geographic range?
Its lungless respiration depends entirely on consistently cool, moist skin conditions, tying the species closely to the cool, damp coniferous and mixed forest habitat found along a relatively narrow band of the Pacific coast of North America in northern California and southern Oregon. Outside this specific climate and habitat zone, conditions are generally too dry or too warm for the species' skin-based breathing to function reliably, which naturally limits its overall geographic distribution compared with more broadly tolerant amphibian species.