Mange-affected limb of vicuna (IMAGE) University of California - Davis Caption Crusty, thick skin shows the impacts of mange on a dead vicuña found in Argentina’s San Guillermo National Park. Credit Hebe del Valle Ferreyra Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. No derivatives or adaptations of the work are permitted. License CC BY-NC-ND 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.