CT scan (IMAGE) Florida Museum of Natural History Caption Spiny mice produce bony plates called osteoderms just beneath the skin of their tails, which detaches when the animal is attacked, affording them a quick getaway. Credit Image by Edward Stanley Usage Restrictions Credit must be given to the creator. License CC BY 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.