You can extract the choicest parts from a monster’s carcass to use as resources when crafting items.
Benefit(s): You can attempt a Craft or Heal check, as though making a trophy, to gain usable resources from a creature that has been dead for less than an hour. Only creatures with a CR of 1 or higher yield usable parts. The value of the parts you harvest is equal to the creature’s CR squared × 10 gp (increases to CR derived from class levels or templates do not contribute to this value). This value can be used only as raw materials for crafting alchemical, masterwork, mundane, or magic items. Items crafted using creature parts must be made of a suitable material—typically bone or hide, with metal only in extraordinary cases. No more than a quarter of a crafted item’s cost can be supplied with harvested parts. Harvested parts remain usable for 2 days before they rot (unless used to craft objects or somehow preserved). Creature parts that are harvested in this manner can’t be bought or sold in most settlements.
Pathfinder Player Companion: Monster Hunter’s Handbook © 2017, Paizo Inc.; Authors: Eric Hindley, Mikko Kallio, Luis Loza, and Christopher Wasko.