Pathfinder 2 Canny Acumen Feat
You can find Feat Rules here.
Canny AcumenFeat 1
Your avoidance or observation is beyond the ken of most in your profession. Choose Fortitude saves, Reflex saves, Will saves, or Perception. You become an expert in your choice. At 17th level, you become a master in your choice.
All General Feats
Additional Lore | Adopted Ancestry | Alchemical Crafting | Ancestral Paragon | Arcane Sense | Armor Proficiency | Assurance | Automatic Knowledge | Bargain Hunter | Battle Cry | Battle Medicine | Bizarre Magic | Bonded Animal | Breath Control | Canny Acumen | Cat Fall | Charming Liar | Cloud Jump | Combat Climber | Confabulator | Connections | Continual Recovery | Courtly Graces | Craft Anything | Diehard | Divine Guidance | Dubious Knowledge | Expeditious Search | Experienced Professional | Experienced Smuggler | Experienced Tracker | Fascinating Performance | Fast Recovery | Feather Step | Fleet | Foil Senses | Forager | Glad-Hand | Group Coercion | Group Impression | Hefty Hauler | Hobnobber | Impeccable Crafting | Impressive Performance | Incredible Initiative | Incredible Investiture | Intimidating Glare | Intimidating Prowess | Inventor | Kip Up | Lasting Coercion | Legendary Codebreaker | Legendary Linguist | Legendary Medic | Legendary Negotiation | Legendary Performer | Legendary Professional | Legendary Sneak | Legendary Survivalist | Legendary Thief | Lengthy Diversion | Lie to Me | Magical Crafting | Magical Shorthand | Multilingual | Natural Medicine | Nimble Crawl | Oddity Identification | Pickpocket | Planar Survival | Powerful Leap | Quick Climb | Quick Coercion | Quick Disguise | Quick Identification | Quick Jump | Quick Recognition | Quick Repair | Quick Squeeze | Quick Swim | Quick Unlock | Quiet Allies | Rapid Mantel | Read Lips | Recognize Spell | Ride | Robust Recovery | Scare to Death | Shameless Request | Shield Block | Sign Language | Skill Training | Slippery Secrets | Snare Crafting | Specialty Crafting | Steady Balance | Streetwise | Student of the Canon | Subtle Theft | Survey Wildlife | Swift Sneak | Terrain Expertise | Terrain Stalker | Terrified Retreat | Titan Wrestler | Toughness | Train Animal | Trick Magic Item | Underwater Marauder | Unified Theory | Unmistakable Lore | Untrained Improvisation | Virtuosic Performer | Wall Jump | Ward Medic | Wary Disarmament | Weapon Proficiency