Don't Tread on Me -- Seriously, Now (IMAGE) University of South Carolina Caption The eastern diamondback rattlesnake might be in the twilight of its very existence. A famous emblem of revolutionary-era America featured on the "Don't Tread on Me" flag, the eastern diamondback has had its habitat reduced to just 3 percent of what it was when Europeans first arrived. Credit University of South Carolina Usage Restrictions None License Licensed content 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.