New Discovery in Snake Evolution (VIDEO) University of Florida This video is under embargo. Please login to access this video. Caption Two University of Florida researchers have identified the genetic activity that caused snakes to lose their legs millions of years ago. Credit Chris Bilowich/UF Health 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.