Pumas Flee when They Hear Human Voices (video) University of California - Santa Cruz Share Print E-Mail Loading video... Caption A puma in the Santa Cruz mountains shows no response to the sound of frogs but flees when it hears human voices. Credit Santa Cruz Puma Project Usage Restrictions For use only with news coverage of this research. Share Print E-Mail 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.