'Ribbit' Call of the Pacific Chorus Frog (audio) San Francisco State University Loading audio... Caption This is an audio recording of the distinctive "ribbit" call of the Pacific chorus frog (28 seconds long, MP3 file, WAV file available on request). This noisy frog is a potent carrier of a deadly amphibian disease, according to research published March 12, 20102 in PLoS ONE. The research was led by biologists at San Francisco State University. Credit Carlos Davidson/ SFSU Usage Restrictions None 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.