Interesting Free article here if any amateur scientist/herper is interested:
Extracting High-Quality DNA from Shed Reptile Skins: A Simplified Method
James W. Fetzner, Jr.
BioTechniques Vol. 26, No. 6: pp 1052-1054 (Jun 1999)
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EDIT....Type reptile in the Search bar to get to the article--I cant find a direct link to article.