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The hellbender (Cryptobranchus alleganiensis), also known as the hellbender salamander, is a species of aquatic giant salamander endemic to the eastern and central United States. It is the largest salamander in North America. A member of the family Cryptobranchidae, the hellbender is the only extant member of the genus Cryptobranchus.
Salamandridae is a family of salamanders consisting of true salamanders and newts. Salamandrids are distinguished from other salamanders by the lack of rib or costal grooves along the sides of their bodies and by their rough skin. Their skin is very granular because of the number of poison glands. They also lack nasolabial grooves.
A newt is a salamander in the subfamily Pleurodelinae. The terrestrial juvenile phase is called an eft. Unlike other members of the family Salamandridae, newts are semiaquatic, alternating between aquatic and terrestrial habitats. Not all aquatic salamanders are considered newts, however.
A rough-skinned newt underwater A rough-skinned newt at Brice Creek in Oregon. Throughout much of the newt's range, the common garter snake (Thamnophis sirtalis) has been observed to exhibit resistance to the tetrodotoxin produced in the newt's skin. While in principle the toxin binds to a tube-shaped protein that acts as a sodium channel in ...
Pyrenean brook salamander in On the Pyrenean newt, Molge aspera, Duges by Jacques von Bedriaga (1895) The Pyrenean brook salamander grows to about 16 cm (6.3 in) in length, half of which is the laterally flattened tail. The females are usually larger than the males. The body is sturdy with a flattened head and small eyes, and the limbs are short.
The alpine newt (Ichthyosaura alpestris) is a species of newt native to continental Europe and introduced to Great Britain and New Zealand. Adults measure 7–12 cm (2.8–4.7 in) and are usually dark grey to blue on the back and sides, with an orange belly and throat.
Salamanders and newts Fire salamander (Salamandra salamandra) — has bred at least once [citation needed] Alpine newt (Ichthyosaura alpestris) (naturalised) [1] Italian crested newt (Triturus carnifex) [2] Toads Midwife toad (Alytes obstetricans) (naturalised) [3] Yellow-bellied toad (Bombina variegata) — was naturalised but current status ...
List of Minnesota amphibians lists all of the salamanders, ... Central newt: Notophthalmus viridescens: ... Checklist of Amphibian Species and Identification Guide;