The Vault - Fallout Wiki

We've Moved! Just as Gamepedia has joined forces with Fandom, this wiki had joined forces with our Fandom equivalent. The wiki has been archived and we ask that readers and editors move to the now combined wiki on Fandom. Click to go to the new wiki.


The Vault - Fallout Wiki
Nothin' But a Hound Dog
Rex FNV.jpg
Quest data
LocationThe King's School of Impersonation
Given ByThe King
RewardRex as permanent follower
500 XP
Editor ID?
Base ID001176b8

Nothing But a Hound Dog is a companion side quest in Fallout: New Vegas.


The King's cyberdog Rex is getting on in years and the brain he uses for a central processor is degrading more and more each day. The King wants to know what can be done to help his canine friend.


  1. Talk to The King in Freeside at The King's School of Impersonation about his cyberdog.
  2. Talk to Julie Farkas at the Old Mormon Fort about what can be done to help Rex.
  3. Return to the King with the news that Rex can be healed.
  4. Take Rex to Doctor Henry in Jacobstown to learn how he can be fixed.
  5. Acquire a new brain for Rex from:
    1. Rey, one of Old Lady Gibson's dogs can be found at Gibson scrap yard. Gibson will demand 700 caps for the brain of her old dog, or she will give it up for free with a Barter check of 70. Rey's brain will provide Rex the Faithful Protector perk, increasing his attack damage.
    2. Violetta, a Fiend guard dog owned by Violet is found at Violet's trailer fort near the Poseidon gas station. Violetta must be killed to acquire her brain. Violetta's brain will provide Rex the Unshakeable Tracker perk, increasing his movement speed.
    3. Lupa, Caesar's Legion hound mother is found at Fortification Hill. Her handler Antony requests that the Courier gives her an honorable death in the Legion arena with only a machete and no armor. Lupa's brain will provide Rex the Blood of the Legion perk, increasing his damage threshold.
  6. Return to Jacobstown and have Rex's brain transplant performed.

Quest stages

1 Talk to Julie Farkas about what can be done to help Rex.
2 Return to the King with the news that Rex can be healed.
3 Take Rex to Doctor Henry in Jacobstown to learn how he can be fixed.
4 Acquire a new brain for Rex from one of Old Lady Gibson's dogs.
5 (Optional) Search for an exceptional canine brain among Caesar's Legion.
6 (Optional) Search for an exceptional canine brain among the Fiends.
7Quest finishedReturn to Jacobstown and have Rex's brain transplant performed.


  • During this quest, even if you have completed For Auld Lang Syne, Doctor Henry will appear at Jacobstown.
  • If the Courier has Boone as a companion and chooses to implant Rex with Lupa's brain, Boone will refuse to accompany the Courier while Rex is an active companion.
  • You can not complete this quest if you completed King's Gambit by killing Pacer.

Behind the scenes

The title of the quest is a cultural reference to the song "Hound Dog", sung by Elvis Presley in 1956.


  • PCIcon pc.png It is possible to stealthily kill Lupa and loot Lupa's brain from her corpse. If she is successfully killed without the player being noticed, Antony may not "notice" that Lupa has died and will still give you the option to fight her in the arena for her brain. If the player accepts, it is possible to obtain a second Lupa's brain, but having two of the brains in your inventory will cause Dr. Henry to not recognize that you have the brain at all, making it impossible to give Rex Lupa's brain. To solve this, either revert to an earlier save, or enter player.removeitem 0013d851 1 in the console. Make sure that you only have one instance of Lupa's brain.
  • PCIcon pc.png There is a chance, if you finish the quest by talking to Calamity rather than Henry, that the variable for Rex's brain won't be set in the quest, you'll get the ending for if you hadn't actually transplanted the brain at all. Use the following command to fix this set "001176B8".nTransplantResult to X
X is one of the following:
0 for no transplant ending.
1 for Rey's brain ending.
2 for Violetta's brain ending.
3 for Lupa's brain ending.
  • Xbox 360Icon xbox360.png If you have already killed Old Lady Gibson as well as her dogs, Rey's quest marker may change positions on the world map either showing up at Novac or Gibson Scrap Yard. In both cases, Rey's corpse may be stuck inside the ground, making it hard for the player to see Rey's body or even realize that the body is glitched.
  • Xbox 360Icon xbox360.png Upon transplanting Lupa's brain Rex's hitpoints may become set at 100/0 making him impossible to heal.
  • If the player implants Rex with Lupa's brain, prompting Boone to initiate the dialog in which he leaves the Courier, the game will sometimes glitch upon leaving this conversation. The result is that Boone will no longer be accompanying the player, but will still follow the player wherever they go, and (upon gaining close proximity) greeting them with his standard welcome, "Is it time?" There are, however, no dialog options available, effectively breaking Boone as a companion.
Main quests
Act 1Ain't That a Kick in the Head · Back in the Saddle · By a Campfire on the Trail · They Went That-a-Way · Ring-a-Ding-Ding!
Act 2Wild Card (Wild Card: Ace in the Hole, Change in Management, You and What Army?, Side Bets, Finishing Touches) · The House Always Wins (I, II, III, IV, V, VI, VII, VIII) · Render Unto Caesar · Et Tumor, Brute? · Things That Go Boom · Kings' Gambit · For the Republic, Part 2 · You'll Know It When It Happens/Arizona Killer
Act 3No Gods, No Masters · All or Nothing · Veni, Vidi, Vici · Eureka!
Side quests
New California RepublicAnywhere I Wander · Back in Your Own Backyard · Bitter Springs Infirmary Blues · Boulder City Showdown · Can You Find It in Your Heart? · Climb Ev'ry Mountain · Don't Tread on the Bear! · Emergency Radio · Eye for an Eye · Flags of Our Foul-Ups · Hard Luck Blues · I Don't Hurt Anymore · I Put a Spell on You · Keep Your Eyes on the Prize · Medical Mystery · No, Not Much · Pressing Matters · Restoring Hope · Return to Sender · That Lucky Old Sun · The White Wash · There Stands the Grass · Three-Card Bounty · We Will All Go Together · You Can Depend on Me
Caesar's LegionBeware the Wrath of Caesar! · Caesar's Favor · Caesar's Foe · Caesar's Hire · Cold, Cold Heart · I Hear You Knocking · The Finger of Suspicion · We Are Legion
The StripBeyond the Beef · Bye Bye Love · Classic Inspiration · How Little We Know · Pheeble Will · Talent Pool · The House Has Gone Bust! · The Moon Comes Over the Tower
Freeside & Outer VegasBirds of a Feather · Bleed Me Dry · Debt Collector · G.I. Blues · High Times · Someone To Watch Over Me · The Coyotes · Wang Dang Atomic Tango
BoomersAnt Misbehavin' · Sunshine Boogie · Volare! · Young Hearts
Great KhansAba Daba Honeymoon · Cry Me a River · Don't Make a Beggar of Me · Oh My Papa
Powder GangBooted · I Fought the Law · Run Goodsprings Run · Why Can't We Be Friends?
Brotherhood of SteelEyesight to the Blind · Still in the Dark · Tend to Your Business
OtherCome Fly With Me · Crazy, Crazy, Crazy · Ghost Town Gunfight · Guess Who I Saw Today · Left My Heart · My Kind of Town · The Legend of the Star and A Valuable Lesson · Unfriendly Persuasion · Wheel of Fortune
Companion questsED-E My Love · For Auld Lang Syne · Heartache by the Number · I Could Make You Care · I Forgot to Remember to Forget · Nothin' But a Hound Dog · One For My Baby
Unmarked questsA Bit of Slap and Tickle · Access Powers · All Fired Up! · Andy and Charlie · Arachnophobia · Arizona Scavenger · Barton the Fink · Bear Necessities · Big Winner (Atomic Wrangler, The Gomorrah, The Tops, Ultra-Luxe, Vikki & Vance) · Bounty Killer (I, II) · Brotherhood Bond (I, II) · Caching in at the Cove · Cajoling a Cudgel · Claws Mended · Claws Out · Dealing with Contreras · Defacing the Humble Stone · Democracy Inaction · Don't Poke at the Bear · Eddie's Emissary · Exhumin' Nature · Flogging a Dead Corpse · Friend of the Followers · Getting a Leg Up from Andy · Gland for Some Home Cooking · Harder, Better, Faster, Stronger · Hat's Entertainment · Help for Halford · Hidden Valley computer virus · Highway to the Danger Zone (I, II) · Honorary Rocketeer · I Love Bananas · Iron and Stealing · Keith's Caravan Charade · Laurifer Gladiator · Lenk's Bad Debts · Lily and Leo · Long-Term Care · Malleable Mini Boomer Minds · Maud's Muggers · Meeting an Equal · Missing a Few Missiles · Not Worth a Hill of Corn and Beans · Of Boomers and Education · Old School Ghoul · A Pair of Dead Desperados (I, II) · Papers, Please · Pistol Packing · Playing on the Old Joana · Poor Meat Never Makes Good Soup · Powder to the People · Power to the People · Proper Burial · Razzle Dazzle! · Reach for the Sky, Mister! · Rest and Resupply · Ringo's Caravan Rules · Rotface's Loose Lips · The Screams of Brahmin · Silus Treatment · Short-Term Treatment · Smooth-Talking Criminal · Strategic Nuclear Moose · Straus Calls · Strip Search · Saving (or Savaging) Sergeant Teddy · Stocking Up · Suits You, Sarah · A Team of Moronic Mercenaries · Team Spirit · The Thorn Mayhem · Thought for the Day · Tourist Traipse · Trudy's Radio Repair · A Trusted Aide · Useless Baubles or Fancy Trinkets? · We Must Stop Beating Like This · We Must Stop Meeting Like This (I, II, III, IV) · Wind-Brahmin Wrangler · You Gotta Break Out a Few Eggs · You Make Me Feel Like a Woman
Cut contentIcon cut.png Cut questsAuto-Inject Quest · Bright and Shiny · Chip Provenance · Debug Topics · Jailhouse Rock · Meat of Champions (quest) · TempMan · The Thorn Mayhem · Underpass Water Purifier · Viva Las Vegas! · Welcome to Fabulous New Vegas
Add-on quests
Dead MoneySierra Madre Grand Opening! · Find Collars (8: "Dog", 12: Christine, 14: Dean Domino) · Fires in the Sky · Strike Up the Band · Mixed Signals · Trigger the Gala Event · Put the Beast Down · Last Luxuries · Curtain Call at the Tampico · Heist of the Centuries · Big Winner, Sierra Madre
Honest HeartsA Family Affair · Arrival at Zion · Bighorners of the Eastern Virgin · Chaos in Zion · Civilized Man's Burden · Crush the White Legs · Deliverer of Sorrows  · Departing Paradise · Flight from Zion · Gathering Storms · Gone Fishin' · Happy Trails Expedition · Prisoners of War · Retake the Bridge · River Monsters · Rite of Passage · Roadside Attraction · Sanctity of the Dead · The Advance Scouts  · The Treacherous Road · The Grand Staircase · Tourist Trap
Old World BluesAll My Friends Have Off Switches · A Brain's Best Friend · Coming Out of Her Shell · Field Research · He Came... And Went · Influencing people · Midnight Science Fiction Feature! · Old World Blues · On The Same Wavelength · Picking Your Brains · Project X-13 · Sonic Emitter Upgrade · Welcome to the Big Empty · What's In A Name? · When Visitors Attack · X-2: Strange Transmissions! · X-8 Data Retrieval Test · X-8: High School Horror! · X-13: Attack of the Infiltrator!
Lonesome RoadThe Reunion · The Silo · The Job · The Launch · The Tunnelers · The Divide · The Courier · The End · The Apocalypse