Since ancient times, the mightiest orc beast tamers would draw out the true fighting spirit of their companion beasts by feeding the creatures a draft incorporating the orc's own blood.
Orc
Feat type
Ancestry Feat
Level
13
Traits
Orc
Prerequisites
animal companion, Pet, or Bonded Animal; Orc Ferocity
Since ancient times, the mightiest orc beast tamers would draw out the true fighting spirit of their companion beasts by feeding the creatures a draft incorporating the orc's own blood. All animal companions, pets, familiars, and bonded animals you have gain the Orc Ferocity feat, and gain one reaction per round they can use only for Orc Ferocity. If you have the Undying Ferocity ancestry feat, all animal companions, pets, familiars, and bonded animals you have also gain the benefits of that feat when using the Orc Ferocity reaction.
Source: Pathfinder Player Core, p. 73
Bring Ferocious Beasts into a Pathfinder 2e game with The DM Screen.