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File:Agkistrodon piscivorus piscivorus CDC.png

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Descrizione This 2005 photograph depicted an “eastern cottonmouth” snake, Agkistrodon p. piscivorus, as it was coiled atop a ground cover of pine needles. Startled, this snake had taken on a defensive posture, baring its fangs in a very aggressive manner.
Data
Fonte

This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #8125.

Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers.

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I downloaded the high-resolution TIFF from the website and re-saved it in the PNG format (compression level 9) using GIMP. This reduced the file size by about half while resulting in no loss of visual information.
Autore CDC/ Edward J. Wozniak D.V.M., Ph.D., John Willson at the University of Georgia, at the Savannah River Ecology Laboratory (SREL)
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Public domain
This file is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the file is in the public domain.

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08de7f5fec93cd28689fd8302f62f73d4b3c5508

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1 536 pixel

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attuale11:07, 10 mag 2007Miniatura della versione delle 11:07, 10 mag 20072 048 × 1 536 (5,64 MB)Crotalus horridus~commonswiki== Summary == This image is taken from the Public Health Image Library (PHIL), a division of the CDC. The description of the image specifically states that it is in the public domain: "This image is in the public domain and thus free of any copyright rest

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