Wood Frog (IMAGE) Penn State Caption Frogs from ponds near highways show a dampened stress response and altered immune profile when experimentally exposed to noise compared to frogs from quiet ponds. This suggests that frogs from noisy ponds have adapted to reduce the negative effects of traffic noise. Credit Tracy Langkilde, Penn State Usage Restrictions Credit must be provided alongside image. 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.