Brown Anole Lizard (IMAGE) Ohio State University Caption Brown anole lizards (Anolis sagrei) are an invasive species in Florida, where pygmy rattlesnakes prey on them. A new study from The Ohio State University found wide variability in venom potency among rattlers living in the same area. Credit Peter May Usage Restrictions credit Peter May 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.