The Great Pussini, opera star, comes into town and immediately takes to Sonja.Cleo's owners are going on vacation and plan to put her in a kennel.

Heathcliff hears through the grapevine that an over-friendly and slightly dim-witted canine friend of his named Chauncey has been captured by the dogcatcher in the next town. Heathcliff decides that Chauncey isn't all that bad and tries to spring him from the pound.

Heathcliff gets into mischief with the local dogcatcher. Sonja is concerned about the dogs that are being picked up so Heathcliff investigates. Once Heathcliff gets involved you know there is going to be some real excitement.

A kitten shows up in the neighborhood with an enormous case of hero worship for Heathcliff. However, he is so much like the object of his esteem that Heathcliff himself can hardly stand his new little shadow. Eventually, the kitten moves on and leaves Heathcliff alone.

A movie star named Rock comes to town to film a new movie, and Sonja is thoroughly smitten. Heathcliff is wildly jealous, but Sonja forbids any fighting. However, when Rock is exposed as a fake - from his toupee to his false teeth - Sonja's affections return to our hero.

Heathcliff and Iggy go to visit the zoo so that Heathcliff can finally meet the king of the beasts, the lion. But to Heathcliff's dismay, the lion is a kind-hearted and gentle creature and not at all to Heathcliff's liking. The apes in the zoo make fun of the lion because he is so tame. Heathcliff gives the cowardly lion some pointers on being fierce and strong which helps the lion put those nasty apes in their place!

The Nutmegs tour the fire station and are very embarrassed by Heathcliff's behavior. That night, while sleepwalking, Grandpa Nutmeg sets the house on fire and Heathcliff saves everyone by getting the firemen there in time, thus redeeming himself for the way he'd acted earlier.

J.B. is a rich, snobbish cat who comes to visit the Nutmegs. He expects Heathcliff to wait on him paw and paw, and even vies for Sonja's attention. However, Heathcliff discovers the dark secret of J.B.'s past and uses the information to his advantage.

Spike's cousin, Bull, is a ferocious looking guard dog who sports a bone out of his mouth the way a tough guy might use a cigar. He convinces Spike that he no longer should take guff from Heathcliff and proceeds to teach him to defend himself but to no avail. After Bull has harassed everyone in the neighborhood, he challenges Heathcliff to a fight in the vacant lot on Elm Street and guess who wins? Who else, Heathcliff!

Heathcliff hears Iggy saying how wonderful it is to have a pet, and decides he should have a pet too. He tries out Spike and Mungo, but they do not make good pets at all. He frees a live lobster from the fish store which makes a great pet until the lobster begs to go home to the ocean and Heathcliff generously complies.

Grandpa takes Iggy to the country club where Grandma challenges Grandpa to a game. Meanwhile, Heathcliff's quarrel with the mice causes chaos in the dining room.

The Nutmegs decide to have a family portrait taken - including Heathcliff. Every time the photographer tells the group to "say cheese," mice appear and Heathcliff dashes to catch them, leaving the studio a shambles in his wake.

During an afternoon of deep-sea fishing, Heathcliff and the Nutmegs land their boat on a small island for a picnic and soon learn the island is inhabited by a tribe of wild cats called Meow Meows. These savages capture the Nutmegs, but Heathcliff cleverly rescues them from being sacrificed in a native ritual.

Heathcliff becomes curious about his lineage and dreams about what his ancestors might have been like. We follow the escapades of historical Heathcliff in the Wild West, merry old England, and ancient Rome until Iggy calls to his cat and wakes him up.

When Heathcliff tries to follow Iggy to a Boy Scout camp, the scout master forbids it, saying, "A common house cat could never survive in the wild." This infuriates Iggy's pet, who sneaks along anyway just to prove the scout master wrong. Even though Heathcliff gets into all kinds of mischief in the wilderness, he leads the group to safety when they get lost in the woods, so he becomes the first cat ever to be named "Scout of the Year!"

After discovering several empty cat food cans in the Nutmeg pantry, Heathcliff decides to go to the cat food cannery to complain. There he defeats a vicious guard dog in battle, and manages to get himself appointed cannery guard by the foreman! The new station is short-lived, however, when what begins as a picnic with the Catillac Cats in the factory turns into a free-for-all, and the old guard dog returns to seek his revenge.

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.

Much to his dismay, Iggy and Marcy enter Heathcliff in a show against pedigree cats. He uses his less-than-scrupulous best to win the show and impress Sonja.

Heathcliff is trying to sleep in a vacant lot when he is disturbed by a noisy construction crew. To revenge his loss of sleep, Heathcliff single-handedly destroys the new structure and hides all of the workers' tools.

Iggy goes into a hospital to have his tonsils removed, and Heathcliff goes along - even though no pets were allowed. Heathcliff terrorizes the hospital in a very short time, and even gives a lecture posing as a visiting doctor.

Iggy and Marcy take Heathcliff along shopping for an anniversary gift for Grandma and Grandpa Nutmeg. Heathcliff seizes every opportunity to cause mayhem in the department store, and even tries to swipe a rhinestone collar for Sonja to replace the one she's recently lost. On the way home, Heathcliff finds Sonja's lost collar in the grass, which makes him a hero.

While on a camping trip with the Nutmegs, Heathcliff gets himself covered in feathers and sardine oil. A mountain lion and an eagle mistake Heathcliff for a bird, and fight over him. Eventually he escapes and returns safely home.

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.

The Nutmegs are snowed in and Heathcliff has cabin fever. He accidentally locks himself out in the snow, and while outside, helps police apprehend the dangerous Ski-Mask Fugitive.

Heathcliff learns that playing Momma Cat is no easy task after he is adopted by a tiny kitten lost from her mother. Heathcliff teaches the little girl all about life as they roam the streets together in search of the missing mom, and they soon become fast friends. Heathcliff's big responsibility ends when at last the mother and kitten are reunited, but a touching moment at the end reveals that Heathcliff is really going to miss the little thing.

When the local policeman warns Heathcliff that any more of his pranks will land him in jail for life, our little monster decides he'd better reform. And when a new cat gang moves into town to terrorize the neighborhood, Heathcliff is forced to stand passively by and let them take over his territory. But it isn't long before the policeman is back knocking on Heathcliff's door; only this time he's come to ask Heathcliff's help. Heathcliff can do anything he wants, just as long as he runs those nasty new cats out of Westfinster! Things return to normal in no time as Heathcliff shows the punks who's really the boss!

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.

A big, muscle-bound cat named Pecs tries to take Sonja away from Heathcliff, so he starts working out in order to beat Pecs at his own weightlifting game. Unfortunately, the manager of the gym is in cahoots with Pecs, and throws Heathcliff every possible curve. Heathcliff catches on, and throws the curves right back. Sonja is his in the end.

A mild-mannered cat named Henry -- who looks exactly like Heathcliff -- wanders into the neighborhood. When Spike thinks he has beaten up Heathcliff, Heathcliff catches on and joins forces with Henry to make Spike look like a fool.

Marcy gets a new cat, Tammy, who challenges Heathcliff's position as top cat in the neighborhood. It's a terrible blow to Heathcliff's ego to have a female cat take over, but neither he nor the alley cats can defeat this lady. Sonja knows how to handle Tammy, however, and puts Heathcliff back in charge.

Heathcliff and Sonja go to the circus to see Heathcliff's cousin, Rollo the cat-clown. Rollo is troubled because the wild circus animals have become tame, the trapeze artists are afraid of heights, etc. Our hero discovers a plot by a rival circus, and with the help of the Catillac Cats, he fails the evil plan.

Sonja tells Heathcliff he needs to lose a little weight, so he goes on to crash diet with the help of the Alley Cats. Every time Heathcliff weakens and tries to eat something, Mungo or Hector snatch the food away. When Heathcliff is finally able to tell Sonja he has lost ten pounds, she admits he'll love him at any weight, so our hero instantly returns to his former gluttonous ways.

Heathcliff suffers a nasty bang on the head, which renders the "Devil Cat" side of his personality stunned and permits the "Angel Cat" side to take over. Suddenly Heathcliff is good as gold and begins performing numerous acts of kindness toward Spike. Spike is confused, but certainly willing to take advantage of the situation. He even puts on a show for the other animals to demonstrate his new ability to make Heathcliff do his bidding. However, when the "Devil Cat" recovers, Heathcliff puts Spike back in his place posthaste.

Heathcliff declares war on a couple of gophers in the park.

When Iggy is sick, he gets so much special attention from Grandma Nutmeg that Heathcliff pretends to be sick.

Mugsy and Spike challenge Iggy and Heathcliff to a soap box racer competition.

Heathcliff stows away on a cruise ship.

The boys at school bet Iggy he cant come up with a better science project than they've got.

In order to get a date with Sonja, Heathcliff promises to baby-sit her little nephew.

Heathcliff is volunteers to be the cat on the Puurfect cat food commercial, but doesn't get the part for liking the brand X cat food.

A local restaurant owner hires two guard dogs to keep Heathcliff out of the garbage.

Iggy is trying to master playing the trombone.

Pop gets paroled from prison, but Heathcliff thinks he has escaped.

Two Siamese ninja cats enter town and terrorize the neighborhood. Heathcliff his blamed for it. Heathcliff, with the help of Hector, Mungo, and Wordsworth, gets rid of the Siamese twins.

Heathcliff gets an idea from reading Playcat Magazine.

Heathcliff notices Spike and the Alley Cats are missing from the neighborhood.

Iggy decides to send Heathcliff to obedience school.

Mugsy insults Marcy at the tennis club.

Heathcliff and Mungo meet the great cat-wrestler, Boom Boom Pussini.

Heathcliff sneaks along when the Nutmegs visit Marineland.

Dooley the dogcatcher has been replaced by a robot called the super Mechanical Animal Catcher (M.A.C.). It starts catching all animals in town. Heathcliff destroys the M.A.C. menace and reprograms it to set all the animals free.

Hector, Wordsworth and Mungo decide to teach Heathcliff a lesson after a typical day of being picked on. That night when Heathcliff is fast asleep, the cats sneak into his house, and with Hector dressed like a ghost, frighten Heathcliff into promising to be nice to his friends. After a few days of being good, Heathcliff finally catches on and puts his sneaky friends back in their place.

Heathcliff breaks into prison to save his father just as his father is released. Heathcliff is locked up and begins terrorizing the entire prison, while Pop moves in with the Nutmegs and begins terrorizing the neighborhood. In the end, a trade is made, and both cats return to their rightful places.

Heathcliff and the Nutmegs go to an air show where Iggy wins a raffle for a ride in a supersonic jet. Heathcliff pushes a button which ejects the pilot and then brings the jet in for a spectacular landing by himself.

It's Heathcliff's birthday, and he's a very happy cat. That is, until he realizes all his friends have forgotten! Everywhere he goes, cats and people blithely tell him they're busy, and send him away. Angry and hurt, Heathcliff decides to run away. When he goes into the Nutmeg home to get his things, everyone is there yelling, "SURPRISE!"

When the Catfather and his mob move into the neighborhood, a naive Heathcliff accepts his offer to work for him, and unsuspectingly collects "gifts" from all the frightened animals in town. When he discovers from Sonja who he is really working for, Heathcliff, needless to say, takes care of things properly.

Grandpa, Iggy and Heathcliff find themselves in the path of a group of people on horseback. It's a fox hunt, and both Iggy and Heathcliff are very sympathetic to the fox. Heathcliff teaches the frightened creature several tricks to foil the hunt, and saves the little guy's life.

Iggy and Heathcliff are watching TV and see on the news that a prisoner escaped who looks just like Grandpa. When Grandpa comes home, they think it's him and try to hide him. The real prisoner shows up and Heathcliff and Iggy have to figure out which one is the real Grandpa.

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.

Marcy dresses Heathcliff in baby clothes and is pushing him down the street, when two crooks disguised as mother and child rob a jewellery store. The police confuse the duos and throw Heathcliff in jail! Undaunted, our courageous cat escapes his cell, apprehends the true offenders, and surfaces a hero.

Spike's mother is coming to visit, so he pleads with Heathcliff to let it appear that he runs things around the neighborhood. Spike says he'd be a disgrace to his family if they knew he was second to a cat. Heathcliff refuses on the grounds that he doesn't want his neighborhood misrepresented, and continues to torment Spike at every opportunity. However, Heathcliff quickly learns that he is no match for Spike's mother.

Heathcliff goes out to sea with the fishermen to determine what has caused a dreadful tuna shortage. Once in tuna waters, he discovers the culprit is a giant shark with an enormous appetite. Valiantly, Heathcliff annihilates the enemy and is rewarded with a mountain of fresh tasty tuna.

Heathcliff takes Sonja to an Egyptian Museum for her birthday. Their, two spies mistake Heathcliff as an old Egyptian cat king that has returned to life. They decide to ""rescue"" him and return him to Egypt. Hector, Wordsworth and Mungo also hear of the party and attempt to crash it.

A mouse named Newton, who has super-human strength, ventures into Heathcliff's home and starts reeking havoc. Grandpa orders a robot to get rid of the mouse. The robot mistakes Heath for a mouse and starts chasing after him. Newton the mouse saves Heathcliff.

Heathcliff and Sonja land the leading roles in a movie which is filming in her town. However, once on the set, Heathcliff discovers he is merely a stunt double for a temperamental star. After surviving several rigorous stunts, Heathcliff challenges the conceited star, who storms off the picture, leaving Heathcliff to do the final love scene with Sonja.

There's a new arrival in the neighborhood. A highbrow English couple, and their equally-arched cat - Reginald.

While browsing through a magazine, Heathcliff dreams of what it would be like to be a rich Beverly Hills cat. He soon finds out, slipping off into dreamland. But once in Beverly Hills, Heathcliff finds out it's not the land of milk and honey he imagined. Lacking status, clothes and manners, he is soon pursued by an angry mob who feels he doesn't fit in. Heathcliff awakens to find he's safe in the Nutmeg household, which beats Beverly Hills any day.

The Nutmegs take Heathcliff to a "Shrink" -- the famous Dr. Hans Headfixer. After a few sessions, Heathcliff's a new, docile housecat. The Nutmegs aren't exactly happy with the 'new' Heathcliff when a burglar comes calling and Heathcliff actually helps the intruder out.

Grandpa accidentally feeds Heathcliff some Super doggy Vitamins. Gradually, Heathcliff undergoes a startling transformation which includes barking at trucks and passing up fish in favor of bones. Worst of all, he finds himself feeling friendly toward Spike. Heathcliff eventually sets things straight by taking a massive dose of cat vitamins, with Iggy's help.

Mugsy is tired of Spike losing to Heathcliff and tosses the dog into the streets. Iggy takes pity and offers to take Spike in, to Heathcliff's horror.

Heathcliff switches places with a rich cat, a look-alike named Beatcliff. They both adjust to their new lives, until Heathcliff meets Beatcliff's fiancé Agnes, and he skips out on their wedding.

Heathcliff remembers the story of how they first got together. Heathcliff's story of how it happened varies from Sonja's story.

Heathcliff thinks he witnesses Spike get dog-napped while he is laid up with a broken leg. He sends the Alley Cats on a detecting misadventure.

Because of his habit of stealing fishes, Heathcliff is put to a therapy where in order to break his habit.

Heathcliff's thrilled to learn that his Mom is coming to visit, but terrified that she'll discover he's fibbed about living with a wealthy family. He concocts a plan to fool his Mom, but learns the hard way that one should always tell the truth.

Heathcliff spreads false news around the neighborhood after hearing the city plans on trimming the trees.

Out-of-weight, out-of-shape Heathcliff is coerced into a crash course at the local cat health emporium.

Spike meets Albert, who promises to help Spike get Heathcliff back for all the bad things he's done to Spike. Unfortunately everything Albert plans winds up backfiring on Spike!

After getting beat up, Jake, the new cat in the neighborhood, learns that Heathcliff is the boss. But Jake gets a cat costume and impersonates Heathcliff to make him look bad!

While robbing the fish store, Heathcliff hits his head and gets amnesia. The old neighborhood gang take advantage of him, as well as Spike.

Heathcliff, caught doing malicious mischief, packs up to join the French Cat Legion.

Iggy is trying to perfect a plant growth formula when Heathcliff stumbles (literally) into his experiment. The result leaves Heathcliff with fur that won't stop growing, until Iggy comes up with an antidote.

A pair of con artist cats decide to burglarize the Nutmeg home, but they have to get Heathcliff out of the way first.

Grandma Nutmeg regales Iggy with a tale about how Heathcliff wound up in the possession of a rare golden egg, and the whole neighborhood (including the crooks who stole it in the first place) wound up looking for it.

The Nutmeg travel to New York for a vacation. Grandpa spins a yarn about how it's rumored there are alligators living in the sewer system and whoever could capture one would be a hero. While visiting a museum, Grandpa leaves Heathcliff with the hatcheck girl...but not for long. Heathcliff soon escapes and before long he's down in the sewers beneath the Big Apple, searching for an alligator. When he actually runs into one the episode turns into a wild chase in the sewers as cat and reptile clash in a titanic battle.

Heathcliff and Spike travel to the North Pole to deliver returned letters back to Santa Clause. It turns out an elf sent them back as a joke.