Iggy is trying to master playing the trombone. Despite Iggy's best efforts, Heathcliff does everything he can to sabotage his musical talent and discourage him from continuing. The more Grandma and Grandpa Nutmeg enjoy Iggy's music, the more irritated Heathcliff becomes. / Cleo's cousin Lindsay arrives, and Riff Raff is "volunteered" to show her around town. Lindsay is an obnoxious loudmouth, and even though Riff Raff doesn't like her, Cleo gets...

Heathcliff accidentally solves a Rubik’s cube-type puzzle, so Iggy decides his cat must be a genius and submits him to a scientist for laboratory testing. Heathcliff doesn't blend well with the other animals, and in no time has managed to cause countless squabbles and sabotage all the lab tests.

Heathcliff sneaks into the Van Corkingdale mansion to challenge Bruno, their ferocious guard dog, and determine who the real king of the neighborhood is. Inside, Heathcliff defeats Bruno, allowing burglars to raid the house! Later, when the some crooks attempt to burgle the Nutmeg home, Heathcliff traps them for the police, and returns all the previously stolen goods to the mansion. / Cousin Lucky comes to visit Riff Raff seeking help. It seems...

Heathcliff accompanies the Nutmegs to the lake Plastered ski resort where he immediately has a tumble with Alpine, the resident St. Bernard. The ensuing fight takes us throughout the ski lodge and onto the slopes; from hot tub to snowmobile before Heathcliff proves himself the better beast.

When a local restaurant owner hires two guard dogs to keep Heathcliff out of the garbage, Heathcliff dresses in a cape to become "The Phantom." The dogs are no match for our hero, and in the end the restaurant owner hires Heathcliff to keep his establishment free of mice. / Pearls are discovered in the drainage ditch swimming hole in the junkyard. Flooding, rainmaking and boat sinking are all a part of "oyster fever". Hector has to lose all in...

Heathcliff, eating the Nutmeg's out of house and home, is sent out to earn his own tuna money. He lands a job on a tuna boat where he tangles with the bad dog from a nearby pirate trawler who has just stolen their entire catch. / Mungo finds half of a treasure map in the junkyard, and the Catillac Cats take off for the desert to search for the lost booty. There they run into Pecos, a cat prospector who just happens to have the other half of the...

Heathcliff is getting heat from everyone at home. He departs to join the French Cat legion, deciding the neighborhood would be better off without him. But he learns that the life of a legionnaire is not all it's cracked up to be. He is tortured, overworked, imprisoned, and sent on impossible missions. Heathcliff escapes dressed as a belly dancer and returns the old neighborhood to normal - Heathcliff style! / The Cats play one trick too many on...

A mind mannered cat named Henry wanders into the neighborhood who looks exactly like Heathcliff. When Spike thinks he has beaten up Heathcliff, Heathcliff catches on and joins forces with Henry to make Spike look like a fool. / Riff Raff and the Catillac Cats go camping in the woods and meet Big Foot who threatens their camp. They try to catch him for fame and fortune. In the end Big Foot gets away, but upon overhearing the boys tell their disappointment...

Heathcliff notices Spike and the Alley Cats are missing from the neighborhood. He discovers them, along with many other stolen animals, in a "second hand pet shop" in a bad part of town. The crooks who operated the shop try in vain to catch Heathcliff, but he defeats them and sets all the other animals free.

Heathcliff and Mungo meet the great cat-wrestler, Boom Boom Pussini. In Heathcliff's usual antagonistic manner, he prompts Boom Boom into a fight to be held at the Catatorium in one week's time. Heathcliff is so sure that he can win that Mungo can't even get him to train. When the time comes to fight, Heathcliff doesn't play fair when he unties Boom Boom's shoes laces to get the upper hand on the professional wrestler. / At a beach party, Mungo...