Season 5 Episode 44 – It’s Du-Kay Johnny

Dukey is starting to behave too much like a regular dog, so Susan and Mary decide it’s time for a DNA upgrade, but it turns him into a sophisticated dog named Du-kay who would rather spend time at a country club than hang out with Johnny.
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  • Season 5 Episode 52 – Green Johnny
  • Season 5 Episode 51 – Johnny X…Again?
  • Season 5 Episode 50 – Johnny Rich
  • Season 5 Episode 49 – It’s All Relative, Johnny
  • Season 5 Episode 48 – It’s an Invasion, Johnny
  • Season 5 Episode 47 – Johnny McCool
  • Season 5 Episode 46 – Dolly Johnny
  • Season 5 Episode 45 – Magic Johnny
  • Season 5 Episode 44 – It’s Du-Kay Johnny
  • Season 5 Episode 43 – Johnny-O’s
  • Season 5 Episode 42 – Johnny Test’s Quest
  • Season 5 Episode 41 – Bugged Out Johnny
  • Season 5 Episode 40 – Johnny vs. the Tickler
  • Season 5 Episode 39 – Johnny’s Left Foot
  • Season 5 Episode 38 – Extra Credit Johnny
  • Season 5 Episode 37 – Johnny’s Treasure
  • Season 5 Episode 36 – Mush, Johnny, Mush
  • Season 5 Episode 35 – Johnny’s World Record
  • Season 5 Episode 34 – Johnny Germ Fighter
  • Season 5 Episode 33 – Lakeside Johnny
  • Season 5 Episode 32 – Johnny’s First Annual Snowball
  • Season 5 Episode 31 – A Holly Johnny Christmas
  • Season 5 Episode 30 – Roller Johnny
  • Season 5 Episode 29 – Cool Hand Johnny
  • Season 5 Episode 28 – Johnny Alternative
  • Season 5 Episode 27 – My Dinner with Johnny
  • Season 5 Episode 26 – Nightmare on Johnny’s Street
  • Season 5 Episode 25 – Johnny Trick or Treat
  • Season 5 Episode 24 – Johnny Susan, Susan Johnny
  • Season 5 Episode 23 – Johnny Two-Face
  • Season 5 Episode 22 – Johnny’s Winter Jacket
  • Season 5 Episode 21 – Johnny’s Keys to Success
  • Season 5 Episode 20 – Johnny Testosterone
  • Season 5 Episode 19 – Fangs a Lot Johnny
  • Season 5 Episode 18 – The Return of Johnny Super Smarty Pants
  • Season 5 Episode 17 – How to Become a John-i Knight
  • Season 5 Episode 16 – Johnny’s World Prank Wars I
  • Season 5 Episode 15 – Johnny Goes Camping
  • Season 5 Episode 14 – Johnny’s Ultimate Treehouse
  • Season 5 Episode 13 – Lawn Gone Johnny
  • Season 5 Episode 12 – Black & White & Johnny All Over
  • Season 5 Episode 11 – Johnny’s Rat Race
  • Season 5 Episode 10 – Johnny Irresistible
  • Season 5 Episode 9 – Johnny Swellville
  • Season 5 Episode 8 – Johnny of the Deep
  • Season 5 Episode 7 – Cat Scratch Johnny
  • Season 5 Episode 6 – Johnny vs. Bling-Bling: The Ultimate Battle
  • Season 5 Episode 5 – Spotless Johnny
  • Season 5 Episode 4 – Rated J for Johnny
  • Season 5 Episode 3 – Johnny Cruise
  • Season 5 Episode 2 – Johnny Daddy Day
  • Season 5 Episode 1 – Johnny Goes Nuts
  • Season 4 Episode 52 – Johnny X Strikes Back Again! (JX8)
  • Season 4 Episode 51 – Good Ol’ Johnny Test
  • Season 4 Episode 50 – Johnny Lock Down
  • Season 4 Episode 49 – Johnny Boat Racing
  • Season 4 Episode 48 – A Scholarship for Johnny
  • Season 4 Episode 47 – Johnny & Dark Vegan’s Battle Brawl Mania
  • Season 4 Episode 46 – Johnny Test’s Day Off
  • Season 4 Episode 45 – Johnny’s Royal Flush
  • Season 4 Episode 44 – Johnny’s Got a Wart!
  • Season 4 Episode 43 – Sleepover at Johnny’s
  • Season 4 Episode 42 – Johnny Tube
  • Season 4 Episode 41 – Johnny Cakes
  • Season 4 Episode 40 – Johnny Re-Animated
  • Season 4 Episode 39 – King Johnny
  • Season 4 Episode 38 – Johnnycicle
  • Season 4 Episode 37 – Sunshine Malibu Johnny
  • Season 4 Episode 36 – Johnny’s Big Sister Smackdown
  • Season 4 Episode 35 – Johnny vs. Bling Bling IV
  • Season 4 Episode 34 – Johnny’s New BFF
  • Season 4 Episode 33 – Guess Who’s Coming to Johnny’s for Dinner
  • Season 4 Episode 32 – Johnny Test in 3D
  • Season 4 Episode 31 – Johnny’s Amazing Race
  • Season 4 Episode 30 – 99 Deeds of Johnny Test
  • Season 4 Episode 29 – Princess Johnny
  • Season 4 Episode 28 – Who’s Johnny?
  • Season 4 Episode 27 – Johnny Grow Your Own Monster
  • Season 4 Episode 26 – Johnny vs. The Mummy
  • Season 4 Episode 25 – iJohnny
  • Season 4 Episode 24 – The Destruction of Johnny X (JX7)
  • Season 4 Episode 23 – X-Ray Johnny
  • Season 4 Episode 22 – Johnny Double Coupons
  • Season 4 Episode 21 – Johnny Johnny
  • Season 4 Episode 20 – Johnny Degrees Below Zero
  • Season 4 Episode 19 – Old School Johnny
  • Season 4 Episode 18 – Johnny Get Yer Gum
  • Season 4 Episode 17 – Quantum of Johnny
  • Season 4 Episode 16 – Tom and Johnny
  • Season 4 Episode 15 – My Johnny Guard
  • Season 4 Episode 14 – Johnny’s Big Dumb Sisters
  • Season 4 Episode 13 – Johnny’s Amazing Cookie Company
  • Season 4 Episode 12 – Johnny’s Trophy Case
  • Season 4 Episode 11 – Dukey Jekyll and Johnny Hyde
  • Season 4 Episode 10 – The Johnnyminster Dog Show
  • Season 4 Episode 9 – Papa Johnny
  • Season 4 Episode 8 – No Homework Johnny
  • Season 4 Episode 7 – Dark Johnny
  • Season 4 Episode 6 – Johnny on the Spot
  • Season 4 Episode 5 – Runaway Johnny