Why does Gaara wear eyeliner?

Actually, and sorry for ruining th joke but he doesnt his eyes are just like that cuz he gots th one tailed beast. heres a more complicated answer for th smart peoples: ... Each of the hosts that have appeared so far within the series also possess a physical characteristic that resembles their beast; Naruto for example has fox-like whisker-marks on his face, while Gaara has tanuki-like rings around his eyes.