You gain some of the skills and knowledge of a consumed foe by eating its brain.
Benefit: If you eat a portion of the brain of a creature with Intelligence 3 or higher, you gain a +2 insight bonus on all skill checks and Will saving throws for 1 hour. Eating a brain is a full-round action, and the target must be dead or helpless. If the target is living, you may attempt to eat its brain as a coup de grace attack on the target, but you gain the insight bonus only if your attempt results in the victim’s death.
Classic Horrors Revisited. Copyright 2009, Paizo Publishing, LLC; Authors: James Jacobs, Rob McCreary, F. Wesley Schneider