Hourglass Treefrog (IMAGE) University of California - Davis Caption A UC Davis study found that frogs that tolerate higher temperatures, like this hourglass tree frog in Costa Rica, are likely to fare better in a warming, changing world. Credit Courtesy Marylin Veiman Usage Restrictions Provide credit. 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.