1. 
   Pygmy rattler
   Pygmy rattler is a common name that may be used to refer to the following species of snakes: ...
   Found op http://en.wikipedia.org/wiki/Pygmy_rattler
   
   
2. 
   pygmy rattler
   (from the article `rattlesnake`) ...The other three species belong to a more primitive genus, Sistrurus, which includes the North American massasauga (S. catenatus) and pygmy rattler ...
   Found op http://www.britannica.com/eb/a-z/p/136
   
   

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