Cheetah (IMAGE) Forschungsverbund Berlin Caption Cheetah experts in many zoos around the world are at a loss. Despite all their efforts, these cats often do not reproduce in the desired manner. Researchers from the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW), together with colleagues from the Allwetterzoo Münster, have now found a key to the issue: the age of the mothers at the first pregnancy is the decisive factor. Credit Ad Meskens, <a href="Ad Meskens, https://commons.wikimedia.org/w/index.php?curid=68621350" target="_blank">https://commons.wikimedia.org/w/index.php?curid=68621350</a> Usage Restrictions You are free to use this picture for any purpose as long as you credit its author, Ad Meskens. https://commons.wikimedia.org/w/index.php?curid=68621350 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.