Episode Title:Let Sleeper Dogs Lie / Cat-Astrophe.Episode Description:Let Sleeper Dogs Lie: Crocker learns that Sparky was once his dog when he was a child, and can regain control of him using a secret trigger word.
Cat-Astrophe: Catman mistakenly thinks Sparky is his old nemesis, Dogman, and tries to get rid of him. To prevent this, Timmy brings the real Dogman in an attempt to convince that Sparky isn't him.