I know some males are maneless. In particular the Tsavo subspecies of lion. maneless males That is mainly because of living in arid climates where a mane would make the lion overheat and also hunting with the lionesses. I also know that some lionesses have manes. The mane tends to be light on a maned lioness. I don't know which subspecies of lion has more maned lionesses. http://blog.boundlessjourneys.com/files/2009/02/lions.jpg [Broken] Maned lioness But why would some lionesses have manes? Hasn't it been selected over millions of years for lionesses to not have manes, even in cold areas?