The evolution of the giraffe's long neck is subject to debate. The traditional theory is that this would have allowed them a competitive advantage in reaching foilage beyond the reach of other grazing mammals. An alternative theory proposes that long necks evolved as a secondary sexual characteristic; a sort of one up manship in the fierce courting ritual of "necking" contests to establish dominance and gain access to prized mates.
So what is Penelope Cruz's excuse?

via psd
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