Photographs from an eastern massasauga rattlesnake with snake fungal disease

Photographs from an eastern massasauga rattlesnake (Sistrurus catenatus) found lethargic in Wisconsin, U.S.A. (A) There is a 15 x 12 mm area with firm, misshapen, and discolored scales (arrows) on the ventral neck. (B) There is a 10 x 6 focal area of depression with tan to dark red scale discoloration (arrow) on the ventral body. (C) On the surface of the proximal lung (L) is a 2 x 2 x 1 mm firm tan nodule (arrow). The trachea is indicated by ‘T’.