Round Frogs Sport Shredded Pecs (IMAGE) Florida Museum of Natural History Caption Forward burrowers use pointed snouts and powerful forelimbs bolstered by strong pectoral muscles to scrabble into the earth. They're often orb-shaped to improve their ability to hold water. Credit Rachel Keeffe Usage Restrictions Please credit Rachel Keeffe. 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.