Primal Fury

From WoW: IncGamers World of Warcraft Wiki

Talent: Primal Fury
Effect:Gives you a % chance to gain an additional 5 Rage anytime you get a critical strike while in Bear and Dire Bear Form and your critical strikes from Cat Form abilities that add combo points have a % chance to add an additional combo point.
Statistics: Rank 1 = 50%, Rank 2 = 100%.