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"Primal Perry" is an episode of the animated series Phineas and Ferb.


When Perry comes face to face with an Australian platypus hunter named Liam, who is set out on destroying him, his unwavering demeanor is threatened and his life is put in danger -- he must find a way to defeat this villainous foe, rescue Doofenshmirtz from the error of his ways and save himself from the hunt. Meanwhile, Baljeet is having an existential emergency and finds himself incapable of making decisions, so Phineas and Ferb create an infinite probability generator that will allow Baljeet to make as many choices as he pleases without being affected by the consequences.


At the Flynn-Fletcher House, Perry is surprised by Francis Monogram and Carl who have crawled into the vents to give him his mission instead of waiting for him to come to his lair. He is briefed by Major Monogram and Carl gives him a photo. Monogram draws his attention to a cloud in the photo that says "Doof". Monogram tells Perry to go to the Danville Botanical Garden to investigate what Doofenshmirtz is doing, and gives him his membership card so he can get in.

Meanwhile in the backyard, Buford tells Phineas and Ferb about the history of wedgies until Baljeet comes and asks them for help since he can't make decisions. Phineas asks what the problem is. Baljeet explains that while filling out some college applications, he was becoming paralyzed from the pressure of choosing between loop or string theory. Baljeet realizes that making the right decisions can affect his future. He uses an example of ice cream; choosing vanilla ice cream may make him go on the path to the presidency, while strawberry ice cream may get him hit by a bus. He shows a video presentation for it. Phineas begins to suggest Baljeet can make both choices but Buford interrupts them to ask where Perry is.

At the Danville Botanical Garden, Doofenshmirtz continues making smoke signals and realizes how complicated it is. Perry arrives, and two old ladies tell off Doofenshmirtz for violating the rules by standing on the grass when there is a "Keep Off The Grass" sign. Doofenshmirtz then shows his membership card; the two ladies check it and leave. Doofenhmirtz tells Perry that the reason he isn't trapped is that he hired someone else to trap him. A boomerang suddenly shoots out of nowhere and ties Perry up, and Doofenshmitz introduces him to the Australian platypus hunter, Liam McCracken. Liam explains that he hates platypuses because he was separated from his mother when she was distracted by a cute platypus on a hill. His stroller rolled away while she was attempting to take a picture; he never saw his mother again. Then he swore revenge on platypuses. Liam explains to Doofenshmirtz that platypuses have poisonous ankle barbs, and Doofenshmirtz asks Perry why he never told him. Liam shows his own poisonous ankle barb and begins introducing his "ladies"; Doofenshmirtz comments to Perry that he was unaware that Liam named his boomerangs and that he is starting to get a little creeped out.

Meanwhile, Isabella comes to see what Phineas and Ferb are doing. Phineas explains that they are helping Baljeet with his decision crisis by building an infinite probability generator. While Phineas explains that the generator will split Baljeet when he is making a choice, Candace is spying on them from behind the tree. As Ferb actives the generator, Isabella praises Phineas for tampering the laws of nature. The generator finishes with Baljeet and the kids test him when an ice cream truck arrives. As the ice cream vendor asks Baljeet what flavor he would like, he splits into two so as to choose vanilla and strawberry ice cream. The second Baljeet is happy with the results from the experiment until he is hit by a bus, then commenting cheerfully that his prediction was correct. The first Baljeet states that he will become president. At the same time, Monogram and Carl start to get lost in the vents and accidentally switch places while looking for each other.

Back at the Danville Botanical Garden, Perry uses his hat to get scissors to escape after Liam finishes naming his boomerangs. Liam plans to add Perry to his trophy room, but after Doofenshmirtz reminds him that he hired him to trap not hunt him, Liam traps him as well. Liam tosses a boomerang that ties Perry and reels him toward him. Liam then takes Perry's fedora and handcuffs him to Doofenshmirtz, then gives them a sixty second head start for them to run before he starts hunting them. Doofenshmirtz sees Perry without his fedora and doesn't recognize him; wondering why he was handcuffed to Perry, Liam tells him that it will be easy for him to hunt them both and tells them to run. Doofenshmirtz introduces himself to Perry and decides to dub him "Steven the Platypus". Doofenshmirtz then sees a beacon and tries to grab it until Perry pushes a bench revealing it's a trap; Liam spots them and starts hunting them.

At the Backyard, Buford tells the Baljeets that they should never mess with him until Candace grabs the two and brings them to Linda while they're thinking about their numbers. Linda has decided to do some spring cleaning in the house and is starting with the refrigerator. Candace brings the two Baljeets to her, but Linda only sees one of them since the other one was covered by the refrigerator door. When Linda ask if he would like grape or orange juice, Baljeet splits again for both choices. Candace tries to gets Linda's attention, but she offers Baljeet some pineapple, mango and tomato juice, not noticing Baljeet continuing to split.

Meanwhile Back at the Danville Botanical Garden, Doofenshmirtz thinks that they lost Liam and should stop for a while until Perry shows him that they should jump into the water and swim. Liam follows them underwater; he and Perry have a short fight until the two escape the hunter. Perry tries to swim, but Doofenshmirtz realizes that they are near a waterfall. As they both fall, Doofenshmirtz wonders when the commercial will come since the situation is perfect for a cliffhanger; he sees the screen fade to black.

Liam thinks they survived the waterfall and continues to hunt them. As Perry and Doofenshmirtz make it to shore, Doofenshmirtz tells "Steven" that they should make a stand against him. With Doofenshmirtz's knowledge and Perry's animal instincts, they both start to make traps for Liam and a glove to catch the boomerangs.

At the Flynn-Fletcher house, the Baljeets started to think that they should give some juice to their friends, until they mention Buford, realizing that he was never been nice to them. Lawrence sees all the Baljeets and simply moves on. All the Baljeets agree not to give Buford any juice.

Back at the Danville Botanical Garden, Perry activates the sprinklers to create a fog that attracts Liam. Liam tosses one of his boomerang to scout ahead; Doofenshmirtz catches it and places it on a tree. As Liam retrieves his boomerang, it activates the trap set for him and catches him. Doofenshmirtz celebrates but it is short-lived when Liam uses a small boomerang to escape and throws another boomerang that accidentally cuts off the handcuff that binds Perry and Doofenshmirtz. Liam tosses his boomerang again and twists one of Doofenshmirtz knee after hitting him. Perry sees Liam, who tosses a gigantic boomerang at him but misses.

Meanwhile, Candace then brings one of the Baljeets to Linda to show her the anomaly. As Linda only sees one Baljeet, Candace asks Baljeet to make a choose between grapes or chocolate. When Baljeet picks the grapes and nothing happens, Linda leaves them and goes back to her cleaning. Candace ask why he didn't split into two, and Baljeet tells her that he really wanted grapes.

Back at the Danville Botanical Garden, Liam sees no sign of Perry, so he now plans to get Doofenshmirtz. Perry comes back armed with Frisbees purchased with Monogram's membership card and uses them against Liam's boomerangs. While Perry and Liam continue to fight each other, Doofenshmirtz sneaks away. At the backyard, all the Baljeets have gathered and all agree about how Buford treats them badly. Isabella, Phineas and Ferb are worried that this could start a mob. Buford thinks it's not serious until the Baljeets play a video stating that their number is superior and start to gang up on Buford.

At the same time, Perry and Liam continue their fight until Perry runs out of Frisbees and uses Liam's boomerangs against him. Perry manages to rip off Liam's jacket to disarm him with the rest of his boomerangs and knock him down.

Meanwhile, Buford ask Phineas and Ferb to save him from the Baljeets; Phineas states that they can't stop them and tries to reason with them. Candace tells Linda that Baljeet is after Buford, but Linda thinks it unlikely since Buford is bigger than him. As the Baljeets prepare to attack Buford, the gigantic boomerang that Liam tosses earlier destroys the infinite probability generator, causing all the Baljeets revert back into one, removing Buford's intimidation with their numbers. Linda sees and ask them to break it up; Candace tells her that she missed them and there were twenty of Baljeet. Baljeet tells her it's just easy how people can make bad decisions. When Linda offers them pie, Buford states it's one thing they all agree on.

Liam pleads with Perry that he's given up until he sees his gigantic boomerang coming back; he moves away so that it hits Perry. As Perry recovers, Liam pins him down with his ankle barb and declares he's won until Doofenshmirtz arrives with the two ladies from earlier. The ladies points out that he was standing on the grass, ignoring the "Keep Off The Grass" sign, and has destroyed some of the landscape. The ladies decide to ban him for ten days due to his third violation in the Botanical Garden. They plan to escort him out in a wheelchair until the ladies are both distracted by Perry, and Liam still on the wheelchair rolls away down the hill.

Meanwhile, Monogram is still stuck and lost in the vents, and hears Carl bringing his cousin Larry to meet him. Monogram then nags Carl for escaping the vents to get his cousin and coming back to the vent to introduce him. Phineas ask how Baljeet feels; he says that he's okay and not feeling bad about choosing anymore. Everyone is glad he is back to normal, including Buford. Baljeet sees that Buford has some sentimentality in his voice; Buford reminds him that he's holding a pie and Baljeet retracts his statement.

Doofenshmirtz is happy to see Perry again and tries to introduce him to Steven, but wonders where he went. Perry walks behind him and takes off his fedora; Doofenshmirtz sees "Steven" and tries to introduce him to Perry. Perry pulls Doofenshmirtz away as they leave the Botanical Garden.



  • Candace could've pulled Linda outside to show her the machine and all the Baljeets together. She also should've asked her to turn around.
  • When Linda was at the fridge, she should've seen the machine out the window.
  • The number of Baljeets change throughout the episode.
  • When Phineas says "That's very clever, Second Baljeet", part of his mouth area cuts off.
  • When Candace first appears, her eyes are low on her face.
  • When Liam is first introduced, he is named O'Cracken instead of McCracken.
  • Platypi have a venomous ankle barb, not a poisonous ankle barb.
  • Baljeet says that he is going to become president, but he cannot because he was not born in America, unless he planned to change the rules in the Senate.


  • This was the first episode to debut on Disney XD before Disney Channel since "What'd I Miss?".
  • Doofenshmirtz breaks the fourth wall when referring to cliffhangers, commercial breaks and fading to black near the end of first half of the episode.
  • One of the boomerangs has the same color scheme as Mickey Mouse.
  • Hatless Perry is the second animal to be called a variant of "Steve".
  • The boomerang bought in Greece has an A written, this could be a reference to Aliki Theofilopoulos Grafft.
  • Baljeet uses contractions while singing, this implies that he may have had his fear of contractions cured.
  • This is the first time we are introduced to a member of Carl's family, as his cousin Larry makes his unseen speaking debut.
  • Candace tries to get in on the evidence without anyone seeing her, similar to Perry.
  • Doof mentions again that he is a Dr. when he is named "Mister Doofenshmirtz".
  • Linda stays home for almost the whole or the entire episode again.
  • One of the boomerangs is named "Scheherezade", the storyteller of One Thousand and One Arabian Nights.
  • McCraken has seven boomerangs he calls "The Seven Sisters". This is another name for the Pleiades, a cluster of stars in the constellation of Taurus, who according to Greek mythology, the object of affection of nearby constellation Orion.


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Animated Productions: Phineas and FerbVideographyTake Two with Phineas and FerbPhineas and Ferb the Movie: Across the 2nd DimensionPhineas and Ferb the Movie: Candace Against the UniverseChibi Tiny Tales

Video Games: Phineas and FerbPhineas and Ferb Ride AgainDisney Channel All Star PartyPhineas and Ferb: Across the 2nd DimensionAgent P Strikes BackPhineas and Ferb: Quest for Cool StuffWhere's My Perry?Disney Infinity (2.0) (3.0) • Phineas and Ferb: Day of DoofenshmirtzWhere's My Summer?Where's My Valentine?Where's My Holiday?
Albums: Phineas and FerbPhineas and Ferb Holiday FavoritesPhineas and Ferb: Across the 1st and 2nd DimensionsPhineas and Ferb: Star Wars soundtrack
Stage shows: Phineas and Ferb: The Best LIVE Tour Ever!

Disney Parks
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Entertainment: Phineas and Ferb's Rockin' Rollin' Dance Party
Firework: Celebrate the Magic Parade: Move It! Shake It! MousekeDance It! Street Party

Major Characters: Phineas FlynnFerb FletcherCandace FlynnPerryDr. Heinz Doofenshmirtz

Secondary Characters: Linda Flynn-FletcherLawrence FletcherIsabella Garcia-ShapiroBaljeet TjinderBuford Van StommMajor Francis MonogramJeremy JohnsonCarl KarlStacy HiranoGinger HiranoMillyKatieHollyAdyson SweetwaterGretchenVanessa Doofenshmirtz
Recurring characters: Giant Floating Baby HeadDjango BrownColtraneCharlene DoofenshmirtzRoger DoofenshmirtzVivian Garcia-ShapiroIrvingJenny BrownSuzy Johnson Nana Shapiro• • DannyBobbi FabulousShermanMeapMitchNormClyde FlynnBetty Jo FlynnPinkyAlbertPeterKlimpaloonTalking ZebraMonty MonogramHildegard JohnsonReginald FletcherWinifred FletcherAloyse von Roddenstein
Minor Characters: JerryBigfootYetiKhaka Peu PeuThe RegurgitatorBob WebberPrincess BaldegundeMelissaUnnamed Fireside GirlsAgent EBrobotsDrill SergeantBuck BuckersonTiana WebberJack JohnsonMrs. JohnsonWendyEliza FletcherNicoletteMandyThaddeus and ThorMindyAmandaLucy FletcherAdrian FletcherBeppo BrownDr. HiranoAnnabelle JohnsonSaraBrigitte, Josette, and ColletteMishti PatelLiam McCrackenRodrigoMorgGlenda WilkinsDr. GevaarlijkHeinz Doofenshmirtz's motherBlanca DishonProfessor PoofenplotzEliza M. FeyersiedLyla LolliberryBalloony • Corn Colossus • Professor Parenthesis
Guest Characters: Santa ClausKim Possible PinocchioBaby BaboonThor OdinsonSpider-ManHulkIron ManRed SkullNick FuryVenomWhiplashMODOK

Season One: "Rollercoaster" • "Candace Loses Her Head" • "The Fast and the Phineas" • "Lawn Gnome Beach Party of Terror" • "The Magnificent Few" • "S'Winter" • "Are You My Mummy?" • "Flop Starz" • "Raging Bully" • "Lights, Candace, Action!" • "Get That Bigfoot Outta My Face!" • "Tree to Get Ready" • "It's About Time!" • "Jerk De Soleil" • "Toy to the World" • "One Good Scare Ought to Do It!" • "A Hard Day's Knight" • "I, Brobot" • "Mom's Birthday" • "Journey to the Center of Candace" • "Run Away Runway" • "I Scream, You Scream" • "It's a Mud, Mud, Mud, Mud World" • "The Ballad of Badbeard" • "Dude, We're Getting the Band Back Together" • "Ready for the Bettys" • "The Flying Fishmonger" • "Phineas and Ferb Get Busted!" • "Greece Lightning" • "Leave the Busting to Us!" • "Crack That Whip" • "The Best Lazy Day Ever" • "Boyfriend From 27,000 B.C." • "Voyage to the Bottom of Buford" • "Put That Putter Away" • "Does This Duckbill Make Me Look Fat?" • "Traffic Cam Caper" • "Bowl-R-Ama Drama" • "The Monster of Phineas-n-Ferbenstein" • "Oil on Candace" • "Unfair Science Fair" • "Unfair Science Fair Redux (Another Story)" • "Out to Launch" • "Got Game?" • "Comet Kermillian" • "Out of Toon" • "Hail Doofania!"

Season Two: "The Lake Nose Monster" • "Interview With a Platypus" • "Tip of the Day" • "Attack of the 50 Foot Sister" • "Backyard Aquarium" • "Day of the Living Gelatin" • "Elementary My Dear Stacy" • "Don't Even Blink" • "Chez Platypus" • "Perry Lays an Egg" • "Gaming the System" • "The Chronicles of Meap" • "Thaddeus and Thor" • "De Plane! De Plane!" • "Let's Take a Quiz" • "At the Car Wash" • "Oh, There You Are, Perry" • "Swiss Family Phineas" • "Hide and Seek" • "That Sinking Feeling" • "The Baljeatles" • "Vanessassary Roughness" • "No More Bunny Business" • "Spa Day" • "Phineas and Ferb's Quantum Boogaloo" • "Phineas and Ferb Musical Cliptastic Countdown" • "Bubble Boys" • "Isabella and the Temple of Sap" • "Cheer Up Candace" • "Fireside Girl Jamboree" • "The Bully Code" • "Finding Mary McGuffin" • "Picture This" • "Nerdy Dancin'" • "What Do It Do?" • "Atlantis" • "Phineas and Ferb Christmas Vacation!" • "Just Passing Through" • "Candace's Big Day" • "I Was a Middle Aged Robot" • "Suddenly Suzy" • "Undercover Carl" • "Hip Hip Parade" • "Invasion of the Ferb Snatchers" • "Ain't No Kiddie Ride" • "Not Phineas and Ferb" • "Phineas and Ferb-Busters!" • "The Lizard Whisperer" • "Robot Rodeo" • "The Beak" • "She's the Mayor" • "The Lemonade Stand" • "Phineas and Ferb Hawaiian Vacation" • "Summer Belongs to You!" • "Nerds of a Feather" • "Wizard of Odd" • "We Call it Maze" • "Ladies and Gentlemen, Meet Max Modem!" • "The Secret of Success" • "The Doof Side of the Moon" • "Split Personality" • "Brain Drain" • "Rollercoaster: The Musical!" • "Make Play" • "Candace Gets Busted"
Season Three: "The Great Indoors" • "Canderemy" • "Run, Candace, Run" • "Last Train to Bustville" • "Phineas' Birthday Clip-O-Rama!" • "The Belly of the Beast" • "Moon Farm" • "Ask a Foolish Question" • "Misperceived Monotreme" • "Candace Disconnected" • "Magic Carpet Ride" • "Bad Hair Day" • "Meatloaf Surprise" • "Phineas and Ferb Interrupted" • "A Real Boy" • "Mommy Can You Hear Me?" • "Road Trip" • "Tour de Ferb" • "Skiddley Whiffers" • "My Fair Goalie" • "Bullseye!" • "That's the Spirit" • "The Curse of Candace" • "Escape from Phineas Tower" • "Lotsa Latkes" • "Ferb Latin" • "A Phineas and Ferb Family Christmas" • "Tri-Stone Area" • "Doof Dynasty" • "Excaliferb" • "Phineas and Ferb and the Temple of Juatchadoon" • "Monster from the Id" • "Gi-Ants" • "The Remains of the Platypus" • "Mom's in the House" • "Perry the Actorpus" • "Let's Bounce" • "Bully Bromance Break Up" • "Quietest Day Ever" • "Doonkleberry Imperative" • "Meapless in Seattle" • "Delivery of Destiny" • "Buford Confidential" • "The Mom Attractor" • "Cranius Maximus" • "Agent Doof" • "Minor Monogram" • "What a Croc!" • "Sleepwalk Surprise" • "Sci-Fi Pie Fly" • "Sipping with the Enemy" • "Tri-State Treasure: Boot of Secrets" • "Doofapus" • "Norm Unleashed" • "Where's Perry?" • "Ferb TV" • "When Worlds Collide" • "What'd I Miss?" • "Road to Danville" • "This is Your Backstory" • "Blackout!"
Season Four: "For Your Ice Only " • "Happy New Year!" • "Fly On the Wall" • "Bully Bust" • "My Sweet Ride" • "Der Kinderlumper" • "Sidetracked" • "Primal Perry" • "Mind Share" • "Backyard Hodge Podge" • "Bee Day" • "Bee Story" • "Great Balls of Water" • "Where's Pinky?" • "Phineas and Ferb Musical Cliptastic Countdown Hosted by Kelly Osbourne" • "Knot My Problem" • "Just Desserts" • "La Candace-Cabra" • "Happy Birthday, Isabella" • "Love at First Byte" • "One Good Turn" • "Mission Marvel" • "Thanks But No Thanks" • "Troy Story" • "Druselsteinoween" • "Terrifying Tri-State Trilogy of Terror" • "Face Your Fear" • "Cheers for Fears" • "Steampunx" • "Just Our Luck" • "Return Policy" • "Live and Let Drive" • "Phineas and Ferb Save Summer" • "Father's Day" • "Imperfect Storm" • "The Return of the Rogue Rabbit" • "It's No Picnic" • "The Klimpaloon Ultimatum" • "Operation Crumb Cake" • "Mandace" • "Phineas and Ferb: Star Wars" • "Lost in Danville" • "The Inator Method" • "Night of the Living Pharmacists" • "Tales from the Resistance: Back to the 2nd Dimension" • "Doof 101" • "Act Your Age" • "Last Day of Summer" • "O.W.C.A. Files"

Locations at or near Danville: DanvilleSeattleMr. Slushy FranchiseDoofenshmirtz Evil IncorporatedFlynn-Fletcher HouseAtlantisGoogolplex MallOld Abandoned Amusement Park

Other: AfricaEnglandNew York CityBig BenMarsTokyoLondonChinaIndiaCanadaChileHawaii

Today is Gonna Be a Great DaySummer Belongs to YouCity of LoveJump Right InPerry the Platypus ThemePerry Saves ChristmasLet it Snow, Let it Snow, Let it SnowGitchee Gitchee GooWhere Did We Go Wrong?BustedLittle BrothersWhat'cha Doin?Carpe DiemS.I.M.P. (Squirrels In My Pants)I'm MeRollercoasterCouldn't Kick My Way Into Her HeartThe Ballad of KlimpaloonEvil for Extra CreditBackyard BeachHappy New YearGreat to Be a BabyWhat Might Have BeenSerious FunCurtain Call/Time Spent TogetherFollow the SunSilhouettes