Koala Bellow (AUDIO) Cell Press Your browser does not support the audio element. Caption This is a sound file of a koala bellow. Credit <i>Current Biology</i>, Charlton et al Usage Restrictions Credit Required 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.