In the outer reaches of the galaxy, a mother ship in the shape of a pressure cooker is home to some very strange creatures: space lasagna! Their ambition is to invade Planet Earth. Their plan to take over might fall through faster than they thought; after all, the one thing Garfield can never get enough of is lasagna.

Hunting birds is something Garfield gave up long ago. But when he finds a nest full of what look like abandoned eggs, Garfield puts his feline pride to one side and decides to hatch them. Harry, the stray, doesn't agree with this plan; he would love to put the newborn birds right on his dinner menu.

It's Halloween and Garfield has dressed up as Catzilla, a fierce wild cat monster, to go out trick or treating. But what he doesn't know is that the monster has escaped from the zoo, and the neighbors are terrified of running into him.

In the garden, Odie meets a Martian whose space-ship has broken down! To thank him for finding the missing piece of his ship, the Martian makes a Garfield/Odie body switch. Garfield ends up in Odie's body, and Odie in Garfield's!

Odie digs up some bones and finds that they are from the very rare brachiosaurus. Garfield tries to sell them to the local museum, but Mrs. Brubaker, the museum owner, instead wants to demolish Jon's house to search for more brachiosaurus bones. This is Esmeralda Brubaker and Hercules' first appearance.

Jon begins to notice that Garfield and Odie are more frequently causing messes around the house. Coincidentally, a salesman arrives at the house to sell Jon a highly technological cleaning robot. Jon accepts a trial of the robot before considering the purchase of one, but the robot becomes highly aggressive and violent when it is cleaning up after Garfield and Odie.

Garfield and Odie watch the news about a villain named Silent Jack, who robs houses while the housekeepers are away. Meanwhile, Jon has gone to the dentist to get his tooth fixed (leaving him unable to talk) and he forgets his key at the dentist.

Nermal meets a cat so called "Agent X" who claims to be a Secret Agent, but in reality, he is just a runaway cat trying to impress the crowd. Garfield becomes jealous as Agent X tells everyone about his adventures of saving people. He soon discovers the true identity of Agent X (Fluffykins), and then turns around the tables in his way to get back his fame.

When his friend Squeek invites his big mouse family over to stay at Jon's, they take over the whole house. If he can't get rid of the mice, Garfield will get no lasagna for at least a year.

Are any pizzas better than Vito's? Of course not. But Jon thinks they could certainly find cheaper: they could go to Mama Meany, who is a nasty piece of work, more crook than cook, not very Mama at all. He has invented a machine: called the Pizzagrande 7000 which can pump out 10 pizzas per minute, all totally bland and completely inedible.

Nermal lives with Garfield and Odie for ten days because his owner is out of town. When Nermal fakes a leg injury, Jon feels pity for Nermal, making Garfield and Odie do whatever he requests. Garfield and Odie attempt to get rid of him so they can live normally once again.

Jon trips over Odie, and the dish of lasagna he was carrying ends up all over Pooky, Garfield's favorite teddy bear. A quick spin in the washing machine gets him clean again, but now he has to hang outside on the washing line to dry. The next morning, Pooky is gone! Garfield is desperate, and looks for him everywhere.

Liz jumps at the opportunity to weigh Garfield with her new high-tech talking scales. And unsurprisingly, the scales think Garfield is too heavy! Liz gives him a week to lose weight, otherwise she's sending him to the cat fat farm.

The hypno-snore might be able to cure Jon's insomnia. Jon tries it out, but the program goes haywire when Odie starts barking at a fly! After that, Jon falls asleep any time, any place, whenever Odie barks. Things get worse when Jon starts sleepwalking through town in the middle of the night!

Jon finds his old Accordion but Garfield doesn't like him playing it nor the very sound of it. Garfield tries to get rid of it, but in the end, the Accordion breaks and Jon gets bagpipes instead.

Jon has won a turkey in a raffle and decides to cook it for dinner. The only problem is that when the turkey arrives, it's alive and kicking, and nobody wants to deal with it.

A new law for dogs has just been introduced: any dog which goes out without a tag on its collar will be thrown into the pound without further ado. Odie gets caught by two guards and dragged off to the dog pound. Garfield therefore heads off to the pound to sneak in and rescue his faithful friend. But then who will get him out?

Jon comes back from the supermarket with a pet brush he has bought. Garfield isn't keen on the idea since he can take care of his own hygiene, but Odie doesn't mind trying it out. He likes it so much that he falls in love with the brush and swears never to leave it.

Tthere's a new TV game show which aims to find out if pets and their masters are really made for each other. Odie is confident that things will calm down once the show has proven Garfield and Jon make a good team. But his cunning plan quickly goes horribly wrong: the Compatriton machine, which never gets anything wrong, says they're incompatible. Garfield gets sent off to live with a boisterous kid called Jeremy, and Jon gets a new pet…. A frog!!

Garfield sends Odie to the end of a rainbow, promising that if he makes it before the rainbow disappears, he'll find a pot full of gold. Odie, who makes a good sleuth, finds it and brings it back to Garfield, much to the despair of its owner, a sad little leprechaun. If Garfield agrees to give the pot of gold back, all his dreams will come true.

It's night-time and the full moon and the alignment of the planets are having a strange effect on Odie. He turns into the monstrous Were-Dog and wreaks havoc in Jon's house.

Jon is finally going to meet Liz's parents. Everything has to be perfect, starting with Odie and Garfield, who seem determined to mess things up for him. Liz's parents arrive and bring a little canary, Mimosa.

Jon goes to visit his brother Doc Boy who lives on a farm. Garfield is a real city cat, it's no picnic for him! To make things worse, Doc Boy asks him to do some work: pile up some logs, wash down the windows, sweep up the leaves. Things really reach their low point when Garfield realizes there's no TV and no pizza.

A pet show has been organized in town, and the 1st prize is a huge dish of lasagna. Garfield's mouth is already watering at the thought of it, and he decides to compete.

Liz has just come back from a trip to Egypt and has brought an old mirror as a souvenir. But it's a magic mirror; one lick from Odie, and he and Garfield get sucked through a door into a parallel world! On the other side, the cats are waiting for their new Pharaoh to arrive, accompanied by his jackal.

The terrible twins Drusilla and Minerva are coming to visit their cousin Jon, and no sooner do they get there than they want to play all kinds of games with Garfield and Odie!

Jon has organized a day of fly-fishing, much to Garfield's dismay since he would rather have stayed home napping. Odie and Garfield visit the underwater world and have all kinds of adventures, some fun, some pretty unpleasant...

It's Liz's birthday, and Jon wants to give her a really special present. A family photo of him and his two faithful friends, Garfield and Odie. You would think there's nothing so easy as taking a family photo, but Jon soon realizes that getting the perfect pic is going to be a real challenge!

When an alien stops at a supermarket on earth, Garfield mistakenly enters his space ship and travels through different planets but it becomes hard for him to survive.

Garfield has found a very special watch: it can stop time ! At first, he uses it to prolong nap times and meal times and play jokes on his friends, but then it turns against him when it gets stuck and the whole world around him freezes!

Liz has to go away for a few days and asks Jon to look after her goldfish while she is gone. When Garfield finds this out, all he can think about is the great fry-up he's gonna have.

At a picnic area, Odie finds a lost baby wolf, so he takes him home, unaware that the mother wolf is following them.

Liz and Jon come home with a VIP guest : the cat Sir Leo, who is a star looking for a few days of R & R. He has always been famous, but dreams of a normal, peaceful life. Surprisingly he looks like Garfield, who jumps at the chance of replacing him for a while: he doesn't mind a taste of a star's life!

A crazy scientist has invented an incredible new machine: the Virtualodeon which makes TV shows real! Unfortunately, the Virtualodeon isn't quite up to speed and Garfield ends up getting trapped inside his own TV.

It's a day like any other at Garfield's house, but then gets sucked through a vortex into a new dimension and ends up in a parallel world where cats have replaced humans, and humans have replaced cats!

Garfield's favorite person to pick on is Herman the mailman, who has just had the very bad idea of taking a vacation. The young recruit who replaces him is optimistic and naive when he thinks that Garfield is a cute little cat and everything will turn out fine.

Garfield is enrolled in Dr Whipple's obedience class after Jon secretly films his bad behaviour. While there, Garfield discovers Dr Whipple is not who he seems.

Doc Boy and Jon want to inherit their cousin's haunted estate, but in order to do so, one must stay there longer than the other.

After hearing children go door to door singing carols on TV, Garfield tries to go around singing carols for food.

Jon accidentally follows a monster movie instead of a cooking show's recipe while baking a cake. It becomes a villainous Frankenstein monster and attempts to kill him, Garfield and Odie for breakfast.

Odie runs away from home, sick of Garfield's cruelty towards him, but the new house he runs off to is the residence of a boy with the personality of a mad scientist named Nathan, who plans to use his new invention to transform Odie into a cockroach. Now it is up to Garfield to save Odie.

Garfield tells us about history of dogs, but puts them in a negative light. When Odie and his dog friends save Garfield's favorite Italian restaurant from a kitchen fire, Garfield is forced to admit that even dogs aren't that stupid.

Garfield shows his ten favorite things and his most favorite thing is watching Odie being tormented by squirrels.

Squeak and his friends want Garfield to take them to Eddie Gourmand's Cheese Land, an amusement park made completely out of cheese where mice are prohibited.

Nermal steals Pooky after Garfield is mean to him, and blackmails Garfield into being nice to him. To get Pooky back, Garfield sends an e-mail asking Druscilla and Minerva to come over and play with Nermal.

Garfield, Jon, Odie and Nermal all get stuck in a tree, so they try to get help.

Garfield imitates a superhero so that Nermal will reward him with food, but gets caught up with the real superhero and a bank robbery caused by a villainous crime lord.

Garfield gets a device that reads people's minds and saves Vito's pizzeria from rioting alien masterminds.

There's a house on fire and a young pup is crying for help: she thinks it's all over. But no – here comes Odie, the super dog! He wishes his dream was true. Then he could finally speak to the pretty stranger in his dreams. But when Garfield really gets into trouble, Odie puts his grudges aside and flies off to help him.

After Nermal makes a comment he doesn't appreciate about his appetite, Garfield bets him that he won't eat a thing for an hour. If he wins, Nermal will be banned from the house for a month. But if he loses, Garfield will be his slave for a whole week.

The ice-cream man is back in town, except that this year, it's an ice-cream woman, and Garfield isn't always nice to her, even though he loves ice-cream. In the meantime, a prehistoric man is found in a block of ice and carted off to a history exhibition.

There's a new employee at the pound: it's a robot with all the latest gadgets and its job is gonna be to make all the pets stick to the straight and narrow. Any pets who have missed a shot or who aren't wearing their nametags get thrown straight into jail by the villain.