Quote Originally Posted by Shylence
yes its off topic but it is one of the reasons why We have less "fur" then our relatives in the animal kingdom because being built for long distance running the loss of hair and increase of sweat pores means we find it easier to cool down in the face of running around in the hot enviroment in the "motherland" known as Africa.

You chase down your prey till it collaspes of heat exhuastion.
Most large animals can run far faster than humans, so humans would never be able to catch them that way. Also, other animals which actually do use such hunting strategies (more than humans ever would have) show no thinning of their fur.

Besides, humans don't really have a lack of hair, other than the usual trend toward less hair on bigger animals (due to the higher ratio of volume or heat production to surface area) that other species also follow. The only strange thing about us is that our body hair is shorter than it ought to be. Sexual selection for it is the leading hypothesis, kind of like the way peacocks have huge tails because of sexual selection.