1. 
   Heterodon
   Heterodon is a genus of harmless colubrids found in North America. They are stout with upturned snouts and are perhaps best known for their characteristic threat displays. Three species are currently recognized. Members of the genus are commonly known as hog-nosed snakes, North American hog-nosed s...
   Found op http://en.wikipedia.org/wiki/Heterodon
   
   
2. 
   Heterodon
   [n] - a genus of small colubrid snakes containing the North American hognose snakes
   Found op http://www.webdictionary.co.uk/definition.php?query=Heterodon
   
   
3. 
   Heterodon
   genus Heterodon noun a genus of small colubrid snakes containing the North American hognose snakes
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=Heterodon
   
   
4. 
   heterodon
   1) Genus heterodon 2) Heterodon 3) Reptile genus
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/heterodon/1
   
   

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