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Tylototriton shanjing, the emperor newt, Mandarin newt or Mandarin salamander, is a highly toxic newt native to Yunnan and parts of South China. It is sometimes seen in private collections, and is sometimes available for sale at certain reptile and amphibian-specializing pet stores and occasionally through captive breeders .
The olm (German: ⓘ) or proteus (Proteus anguinus) is an aquatic salamander which is the only species in the genus Proteus of the family Proteidae [2] and the only exclusively cave-dwelling chordate species found in Europe; the family's other extant genus is Necturus.
The anal opening is a longitudinal slit, and its borders are not raised. The skin is rough and the parotoid glands are large. There is a strong fold on the chin. The entire newt is uniformly blackish brown, slightly paler on the lips, snout, chin, throat, and under surface of limbs. The lower edge of the tail is orange-yellow. [3]
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.
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.
[15] [16] The common mudpuppy never leaves its aquatic environment and therefore does not undergo morphogenesis; however, many salamanders do and develop differentiated teeth. [17] Aquatic salamander teeth are used to hinder escape of the prey from the salamander; they do not have a crushing function. [17] This aids the salamander when feeding.
Eurycea longicauda, commonly known as the long-tailed salamander [5] or longtail salamander, [6] is a species of lungless salamander native to the Appalachian Region of the eastern United States. It is a " cave salamander " that frequents twilight zones of caves and also inhabits springs and surrounding forest.
The southern two-lined salamander is a small thin salamander, distinguished by the two lines running down the lateral portion of its body. The salamander is deep-light brown and fairly small, growing up to 6.5–12 cm in length. The species has 14 costal grooves between its limbs. [3]