Clawed frog - adult (IMAGE) McMaster University Caption African clawed frogs are known for their flat bodies, vocal organs and claws on the first three toes of the hind feet. Credit Adam Bewick Usage Restrictions None. 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.