Eastern Massasauga Rattlesnake (image) University of Illinois at Urbana-Champaign Caption The eastern massasauga rattlesnake normally spends spring in shallow wetlands and summer in drier upland areas. Credit Matthew Allender Usage Restrictions Photo may be used only to accompany stories about the research described in this release. Credit: Matthew Allender. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.