Naked Mole-rat (IMAGE) American Physiological Society Caption Reproductive function does not appear to decline with age. This pregnant naked mole-rat is 15 years old. Credit Rochelle Buffenstein, City College of New York. Usage Restrictions Available to logged-in reporters only. 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.