Rhino (image) University of Manchester Caption The first comprehensive study of captive black rhino reproduction in Europe - involving researchers from The University of Manchester, Chester Zoo and the University of Liverpool highlights how hormone analysis could improve the success of breeding programmes. Credit Chester Zoo Usage Restrictions Only in connection with this story. 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.