Adaptation Displacement: Not many people know that U.S. Acres was a comic strip too. The comic strip version of Bo was very unintelligent, the comic's Sheldon had a philosophical side, and two characters, Cody the Dog and Blue the Cat, were left out of the cartoon altogether (possibly to avoid the Talking Animal confusion that would have arisen regarding them and the non-speaking Garfield and Odie, possibly also because they'd disappeared from the strip by that point).
Granted, it's probably due to the original strip having a very short life. Before the second season of Garfield and Friends even began, U.S. Acres newspaper run had already ended.
Another one in "Once Upon a Time Warp". Roy didn't give Wade back the five bucks for fourteen years because "he doesn't like the principle of giving back money he owes". Considering they knew each other for fourteen years or so and in "Banana Nose", Roy implied he had little to no friends before he moved to the farm, was that the only reason or was that also an excuse for Wade not to stay away from him?
Also was Roy jealous of Wade and Orson's friendship in the early episodes?
Does Orson secretly hate Wade but is too polite to admit it?
Counterpart Comparison: Both Roy and Wade, plus Rei and Usagi from Sailor Moon seem to have some similarities. Both duos are friends who fight with each other but care about each other. Sometimes they fight, other times they act like friends and got more closer as the episodes went on. In episode "Goody-Go-Round", Wade manages to pull a prank on Roy by giving him really hot gum and fire came out of Roy's mouth. In episode 51 of Sailor Moon (the Japanese version only) Usagi pulls the same prank on Rei except with a sandwich with really hot mustard and fire also came out of Rei's mouth. Orson can even be considered Ami's counterpart since they're both calm Bookworms that had to get their two friends to stop fighting.
The U.S.Acres and My Little Pony: Friendship is magic characters seem to have some similarities in personalities. Both Orson and Twilight Sparkle Bookworms leader types who makes mistakes now and then. Roy and Rainbow Dash are both AntiHeros who are full of themselves but help their friends in anyway they can. Wade and Fluttershy are both good-hearted cowards who helps save their friends when they need to. Lanolin is a mix of Apple Jack and Rarity. Both she and Apple Jack are both tough, hard working farm girls and Rarity seems to have more in common with the "imaginary Lanolin" in Orson's fantasies. And both Bo and Pinkie Pie are very friendly and want people to be happy(Pinkie Pie is also like Bo's comic strip counterpart as well).
Roy and Wade, and Rainbow Dash and Fluttershy as duos seem to have some similarities with their friendships. Both duos seemed/implied to have knew each other in their younger years before they joined the main cast. And over time in both series, both, duo's friendships developed and became closer friends.
When you compare Garfield's main Love Interests Arlene and Penelope, it's like the case with Ash, Misty and May from Pokemon. Both Arlene and Misty are strong assertive turnderes who argue with their male counterparts, while both Peneople and May appeared second and are the sweet girls who gets along more smoothly with the main character.
Critical Research Failure: Although Roy Rooster is an antagonist(though not as much as Orson's mean older brothers or the weasel) some fans keep on saying he's a 'bully' when Word of God pointed out that he's not a bully, just an irritant. Although it may have been understandable if fans were just going by the comic book version(though Garfield.com and U.S.Acres facebook both made it clear in Roy's bio that he's not a bully), people who don't bother to watch the show/remember it clearly just go and assume he's a bully, when people who watch/know the show well knows that Roy's a 'class clown' compared to Orson's brothers who are the real bullies.
Forced Meme: Aloysius Pig, good god. note The demerit jokes are quite common to see on the comments of Temp Trouble. An example would be this: "Threatening people who dislike this video? That's not right! That's twenty demerits for you!"
THE BUNNY RABBITS IS COMING! THE BUNNY RABBITS IS COMING! THE BUNNY RABBITS IS COOOMIIIING!
Genius Bonus: According to research from Yale University, people who have love-hate relationships is due to their poor self-esteem. Wade has poor self-esteem and he has a love-hate relationship with Roy! There are moments when Roy shows the esteem issue as well ("Banana Nose" for example), it's just not as upfront or often as Wade.
Growing the Beard: A lot of the humor in the first season and even the beginning of the second season is very awkward, and the animation is quite a bit cruder than in later seasons. The show arguably didn't hit its stride until the Season Two episode "Robodie."
Harsher in Hindsight: Two examples in 'The Legal Eagle', when Orson was building a cage jail. Wade said, "You're going to put your friends in jail?" By the end of the episode, it was Orson's fault, everybody ended up in jail.
Another example, when Wade told Roy(who Orson made into a Deputy), "...Lock me up and throw away the key!" After Roy put everyone in jail, including himself, he literally threw away the key.
And for a more general example, the whole episode "Ode To Odie" after bullying became a newsworthy issue.
At the beginning of "Astrocat" Garfield and Odie watch the game show "Hit The Buzzer, Win A Cookie" and Garfield comments "And this is on the educational channel". Mildly amusing comment then, very relevant today thanks to the Network Decay of TLC.
Episode 35 had a U.S. Acres short ("Hamelot") about a griffon, followed by a Garfield short ("How To Be Funny!") that had a part mentioning practical jokes. Sound familiar?
This also wasn't the only time Howard Morris voiced a character who's friends with a Chicken.
Although both games came out around the same time, "Garfield's Defense" and Disney World's interactive card game, Sorcerers of the Magic Kingdom have some amusing similarities. In "Snow Wade and the 77 Dwarves", Snow Wade's dress,red bow and black hair was similar to the Disney version. In the now iPod/iPhone/iPad game "Garfield's Defense" the U.S. Acres characters help Garfield fight the enemies. Wade's weapon to fight off the enemies is a broom. In "Sorcerers of the Magic Kingdom", Snow White has a spell card to attack the enemies, "Snow White’s Housecleaning". What weapon is she holding/using? A broom.
The episode "Binky Gets Cancelled, Again!" is about Binky the Clown's show getting cancelled again because it wasn't educational. Years later, it would be one of the main reasons why Saturday morning cartoons have all but disappeared on network television. Two other episodes, "Learning Lessons" and "Kiddie Korner", used the "educational things forced by the network" plot as well, making them this trope too.
In "The Legal Eagle", Wade was inside a pumpkin with the stem part on top of his head. In the first "Garfield's Defense game, he ends wearing a pumpkin costume similar to this in the Halloween levels.
The plot of the fake U.S. Acres episode "Much Ado About Orson" in "The Mail Animal" was that Orson had to help Lanolin with her chores. 4 seasons later, the episode "A Little Time Off" occurs, having a similar plot to what Orson described to Wade (Helping Lanolin get her mind off chores by helping her imagine things, which would count as helping her).
Plus, three seasons before that, an episode called "Much Ado About Lanolin" aired.
And now, for a real-life Hilarious in Hindsight. The prophet Muhammad died three years after he ate lamb that was poisoned. 1,361 years later, the episode Snow Wade and the 77 Dwarfs airs, and guess who gives Snow Wade the poison apple? Lanolin Sheep/Lamb!
The ending of Wanted: Wade involves Booker and Sheldon playing a prank related to the main problem in the episode, which was Wade fearing he would be put in jail. 5 years later, the Animaniacs segment "De-Zanitized" has this exact same ending where the Warner siblings were playing the prank, and the problem was that Dr. Scratchnsniff wanted to see a de-zychatrist in order to stop his problems with the Warners.
Meta example: In "Garfield Goes Hawaiian", Frank Welker voiced Garfield instead of Lorenzo Music because Music was ill. Welker would later become the regular voice actor for him in The Garfield Show due to Music's death.
Also in "The Bo Show", Bo(who Frank Welker also voiced) played as Garfield wearing a head mask and trying to voice him.
Probably the most famous of these is a line in the opening that was swiftly (ab)used in YouTube Poop:
There was a weasel who sounds and acts like the one in the US Acres segments in the The Magic Adventures Of Mumfie episode "Pop Goes The Weasel". The same episode also contains a Rake Take similar to the one in "Wanted: Wade".
The episode "Cute for Loot" has Garfield ending up in Abu Dhabi instead of Nermal and he complains that there are no Italian restaurants there. While this might have been the case when the episode aired, that is not the case nowadays as there's even a listing of the best Italian restaurants in Abu Dhabi!
Viewer Gender Confusion: Most fans thought Nermal was a girl because of his feminine voice and there is absolutely nothing boyish about him...and he has eye-lashes. Most of the people who knew he was a guy only knew because he was frequently referred to as a guy in the comics.
The Woobie: Wade Duck, although his Woobie status has been toned down from the comics where he was a Chew Toy. He especially becomes this in the Quack To The Future episode where Orson almost makes him cry.
Woolseyism: In the Spanish dub, this happens. Here are a few examples:
Any logobox quip mentioning something Spanish viewers couldn't get (such as "Hey, Heathcliff! Eat your heart out!" and "Don't bother checking what's on NBC, they've stopped airing cartoons!") would be cut out.
The US Acres segment "Kiddie Korner" had this happen to the nursery rhymes. One example was "La pequeña Lou, se sentó en su poo" replacing "Little Miss Muffet".
Roy's "It's Saturday morning. Do you know where your children are?" line in "Temp Trouble" was replaced with a different one.
In the US Acres quickie after "Attack Of The Mutant Guppies", the guppies want to go on Sabado Gigante, a Spanish variety show, instead of Muppet Babies.