The Therapsid <em>Lystrosaurus</em> (IMAGE) University of the Witwatersrand Caption Ecological simulations show that by breeding younger, Lystrosaurus could have increased its chance of survival by 40%. Credit Wits University Usage Restrictions None 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.