Naked Mole Rat (image) University of Texas Health Science Center at San Antonio Share Print E-Mail Caption The mouse-sized naked mole rat is the longest-lived rodent known, surviving up to 31 years in captivity. Scientists are studying its longevity, including its ability to maintain good health and reproductive potential well into its third decade. Credit Barshop Institute for Longevity and Aging Studies/The University of Texas Health Science Center San Antonio Usage Restrictions None Share Print E-Mail 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.