Wookiee Roar 5 (Source)

lordsaibot, i'm fairly certain that skill bonuses to intimidate don't increase the chance of /wookieeroar sticking, as wookiees have a seperate skill mod for it... there is also a drink (jaar) that increases the potency of your next /wookieeroar, but i've never actually tested it... on the bright side, roars do have a tendancy to stick more often than /intimidate (at least at the novice brawler level)...