Salamander is the common name applied to approximately 500 amphibianvertebrates with slender bodies, short legs, and long tails (order Caudata or Urodela). The moist skin of the amphibians limits them to habitats either near water or under some protection on moist ground, usually in a forest. Some species are aquatic throughout life, some take to the water intermittently, and some are entirely terrestrial as adults. Salamanders superficially resemble lizards, but are easily distinguished by their lack of scales. They are capable of regenerating lost limbs.
Species of salamanders are numerous and found in most moist or aqueous habitats in the northern hemisphere. Most are small but some reach up to 5 feet in length. They live in brooks and ponds and other moist locations. North America has the hellbender and the mudpuppy which can reach the length of a foot. In Japan, China and the United States the giant salamander is found, which reaches 5 feet (1.5m) and weighs up to 30 kilograms (see http://news.xinhuanet.com/newscenter/2002-12/19/content_663873.htm, http://www.giant-salamander.com/ for details).
Salamanders are generally restricted to the northern hemisphere, with the exception of a few species in the northernmost part of South America.
Classification
There are ten families belonging to the order Urodela, divided into three suborders:
The mythical salamander resembles the real salamander somewhat in appearance, but makes its home in fires, the hotter the better. (Similarly, the salamander in heraldry is shown in flames, but is otherwise depicted as a generic lizard.) Early travellers to China were shown garments which, or so they were told, had been woven of wool from the salamander: the cloth was completely unharmed by fire. The garments had actually been woven from asbestos. Later Paracelsus suggested that the salamander was the elemental of fire.
Salamanders have tails and small, weak limbs; superficially they resemble the unrelated lizards (which are reptiles), but they are easily distinguished by their lack of scales and claws, and by their moist, usually smooth skins.
Salamanders are found in damp regions of the northern temperate zone and are most abundant in North America.
The newts are a large, widely distributed family of salamanders; North American species include the red-spotted newt, which goes through a terrestrial stage known as the red eft.
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