Chimp calls (1) (AUDIO) Universiteit van Amsterdam Your browser does not support the audio element. Caption Fragment of the sound of chimpanzees Credit Adrienne Chitayat Usage Restrictions Only to use in the context of this research License Original 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.