Unusual for a T&J short, Jerry "speaks" by narrating the story in a voiceover (supplied by Paul Frees); however, since said narration comes via Inner Monologue, the short doesn't break the "cardinal rule" of not having Tom and Jerry physically speaking on screen.
Also unusual for a T&J-short, is that while pretty much all other shorts for the series have a comical storyline and usually a happy ending (or at least a funny ending), this short is surprisingly sad and the only one to have a truly tragic ending.
Because of this—along with the very heavy implications that the iconic duo ends up committing suicide at the end—this short (which did air a few times in the late 1980s into the 1990s, back when TBS and TNT aired animated shorts, older movies, and general audience programming) rarely airs on television (American and otherwise). Good luck trying to find it.
Tropes associated with Blue Cat Blues:
- Bolivian Army Ending: The cartoon ends with the duo sitting depressed on the train track awaiting their fate. The train whistle blows in the distance just as the cartoon fades out.
- Comically Lopsided Rivalry: Replacing "Comically" with "Dramatically" — Tom completely loses everything trying to obtain things that Butch can top a million-fold in the blink of an eye, and decides to kill himself once it's clear it was All for Nothing.
- Darker and Edgier: Probably the darkest Tom & Jerry short ever, considering it literally ends with the duo completely depressed and waiting for a train to run them over.
- Downer Ending: In the words of Cracked: "Tom & Jerry Get Depressed, Kill Themselves."
- Driven to Suicide: After their girlfriends leave them for wealthier men, it's very strongly implied that Tom and Jerry end up dying through suicide-by-train at the end of the short.
- Drowning My Sorrows in Milk: This is what Tom does after the white cat ultimately chooses Butch over him.
- Friend Versus Lover: In the beginning, the cat and mouse were friends (sharing a glass of lemonade together and Tom allowing Jerry to have more after accidentally sucking him into his mouth as an apology), that is until Tom falls madly in love with the white cat and ignores Jerry throughout the cartoon. Even when Tom given up hope trying to win over the cat, he still pushes Jerry away, despite his pleas and saving him from his suicide attempt.
- Gold Digger: The white cat that Tom falls in love with and Jerry's girlfriend, Toots (who physically appears to be the mouse-version of the white cat), ultimately prove themselves to be nothing more than opportunistic gold-diggers when they leave the duo for wealthier men. It's implied that Toots was more subtle about it since the revelation came as a shock to Jerry, or at least because Jerry didn't know he had competition until he saw that Toots got married.
- Mad Love: Tom does everything... everything to win the white cat back. He spends everything, and willingly sells himself off to slavery to win her over. The episode makes it clear that the white cat was never really interested in him, and he learns this the hard way when she marries a richer guy.
- Mood Whiplash: The already melancholy story takes a really dark twist when Jerry discovers his gal has been cheating on him too. In a meta-sense, watching this short alongside pretty much any other short in the Tom & Jerry canon can provoke this in spades.
- Oddball in the Series: Jerry narrates the short through an internal monologue voice-over (though neither he nor Tom are shown physically speaking). There's also little slapstick to be found, and far more plot than is usual. And this short is probably the only T&J-cartoon to have a genuinely sad storyline and a truly tragic ending.
- Perpetual Expression: The female cat has a completely still face the entire short.
- Rich Suitor, Poor Suitor: Tom's the poor suitor to Butch's rich suitor for the affections of the white cat (whose name has never been revealed but is confirmed to not be Toodles Galore). And because of his vast wealth, Butch is able to get the white cat much larger and more extravagant versions of the gifts that Tom got her:
- While Tom gave her a single purple flower, Butch gave her a large (as in as big as her) pink-and-red floral wreath with "Love From Butch" written on it in yellow.
- After Tom gave her a single (and rather small) bottle of perfume, an enormous tanker truck full of perfume (with a "Love From Butch" note attached to it) drove up to the white cat's house.
- When Tom presented her with a diamond ring (but one with a diamond so small that you needed a magnifying glass just to see it), the white cat revealed that Butch had already given her a diamond ring of his own, but one with a diamond so big and shiny that you couldn't even look at it without eye protection of some kind (in this case, Tom and the white cat wore welding masks to look at the ring).
- Tom's final gift to the white cat was a car that he literally had to give his arm, his leg and had sold himself into slavery for, but the car was an old, outdated jalopy that's ultimately flattened when Butch runs his much longer and more luxurious coupe over it.
- Sympathy for the Devil: Jerry very clearly feels bad for the sorry state his old friend is left in.
- Wham Shot: When Jerry's girlfriend, Toots, drives by with another mouse, after Jerry started talking about how his own girlfriend has seemingly remained faithful to him. Unlike Tom though, Jerry knows better than to spend vastly to win her back — but sadly like Tom, Jerry knows he has no hopes of winning her heart and decides to commit suicide.
- Your Cheating Heart: Tom and Jerry's dates ditch them, leaving the two hopelessly heartbroken—where they decide to sit on the train tracks and wait for the train to kill them.