Male of <i>Rana arvalis</i> (IMAGE) Spanish Foundation for Science and Technology Caption This is a breeding male of Rana arvalis from the study area. Credit Germán Orizaola 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.