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			          Sirenidae - Wikipedia, the free encyclopedia
			           
 Sirenidae, the sirens, are a family of aquatic salamanders. Family members have very small fore limbs, and lack hind limbs altogether https://en.wikipedia.org/wiki/Sirenidae
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			          Greater siren - Wikipedia, the free encyclopedia
			           
 The greater siren (Siren lacertina) is an eel-like amphibian. The largest of the sirens and one of the largest amphibians in North America https://en.wikipedia.org/wiki/Greater_siren
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			          Southern dwarf siren - Wikipedia, the free encyclopedia
			           
 The southern dwarf siren (Pseudobranchus axanthus) is a perennibranch salamander lacking hind legs. Found exclusively in Florida, it is one of two currently recognized species of dwarf sirens. https://en.wikipedia.org/wiki/Southern_dwarf_siren
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			          EDGE - Southern Dwarf Siren
			           
 Learn about the southern dwarf siren including appearance, habitat, behavior, reproduction and conservation. http://www.edgeofexistence.org/amphibians/species_info.php?id=1359
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			          Caudata.org - Siren intermedia
			           
 Lesser sirens are a large salamander with many neotonic traits, including exposed gill tufts throughout adult life. Lesser sirens lack hind limbs and have front limbs that have 4 toes on each foot. http://www.caudata.org/cc/species/Siren/S_intermedia.shtml
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			          BioKIDS - Siren intermedia, Lesser Siren
			           
 The lesser siren is an eel-like salamander with a long slender body (18-68 cm long) and a very small dorsal fin that runs down its back. http://www.biokids.umich.edu/critters/Siren_intermedia/
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			          Lesser Siren for Sale - BackWaterReptiles
			           
 BackwaterReptiles.com has Lesser Sirens for sale (Siren intermedia) at really low prices. Live arrival guaranteed on all salamanders for sale! http://www.backwaterreptiles.com/salamanders/lesser-siren-for-sale.html
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			          ADW: Siren lacertina (Greater Siren)
			           
 Learn about the greater siren including range, habitat, appearance, behavior, reproduction and more. http://animaldiversity.org/accounts/Siren_lacertina/
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			          EDGE - Greater Siren
			           
 Learn about the Greater Siren including evolutionary distinctiveness, appearance, habitat, reproduction and conservation. http://www.edgeofexistence.org/amphibians/species_info.php?id=1391
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			          The Siren Salamander: North America's Death-Defying Amphibian
			           
 Learn about the siren, an amphibian with the ability to lie dormant in the dry earth until such a time that the wet environment it lived in returns. http://scribol.com/environment/animals-environment/the-siren-salamander-north-americas-death-defying-amphibian/
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			          Siren - Amphibian Family - Britannica
			           
 Any member of the family Sirenidae (order Caudata), a group of four species of aquatic salamanders that resemble eels. http://www.britannica.com/animal/siren-amphibian-family