Johnny Test
Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
Season 5 · Episode 44 ·
It's Du-Kay Johnny
When Dukey's DNA begins to degrade, reverting him into a normal dog, the girls attempt to upgrade it, but their upgrade goes overboard, turning Dukey into a rich, snooty dog.
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Episode 44 of season 5 of Johnny Test: “It's Du-Kay Johnny”. Aired 2012-04-11. Watch it online free on ZapFlix.