Vole Love (IMAGE) University of Colorado at Boulder Caption Prairie voles are among about 5% of mammalian species, including humans, which bond for life. Credit Illustration courtesy Zoe Donaldson Usage Restrictions Must credit CU boulder 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.