<i>Pristimantis Dorado</i> (1/3) (IMAGE) Smithsonian Tropical Research Institute Caption This is a picture of a Pristimantis dorado. Despite having no vocal sac and vocal slits, male Prismantis dorado Individuals "sing". Credit Santiago Castroviejo-Fisher Usage Restrictions Credit: Santiago Castroviejo-Fisher 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.