Kansas lion with full mane does not look cowardly! (image) Field Museum Share Print E-Mail Caption Long, thick manes such as this one intimidate rivals and attract potential mates. But they come with a cost, including heat retention. New research shows that lions adapt to hotter climates by growing manes that are less long and thick. This lion lives at the relatively northern Topeka Zoological Park in Topeka, Kansas. Therefore it has a bigger, denser mane than other lions in the study that live in relatively hotter southern climates. Credit Photo by Bruce D. Patterson, Courtesy of The Field Museum Usage Restrictions for media purposes only, and only in relationship to the research described in this press release. Share Print E-Mail 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.