Awesome Art: For a deliberately sketchy-type art style, the Author's drawings are quite nice. There's also several contributions from the guest artists that are absolutely beautiful.
Broken Base: The Author allowing other artists to help out. Either you're happy that the author can produce the pages quicker or you wish they would feel as though they can take their time, and wouldn't mind slow updates. Furthermore either the guest artists have a styles similar enough to each other that it works fine or their styles are different enough to be jarring.
Cargo Ship: George (one of Judy's brothers) and sandwiches, thanks to the aptly titled "Page 53: George Can't Enjoy His Sandwich." Unlike most examples of this trope, the scene that inspired it isn't a happy or funny one.
Fanon: Nothing for the comic itself, but terms and other subjects within the comic have become standard use in other areas of the Zootopia fandom.
Preyophile: A Pred who can be romantically and/or sexually attracted to a Prey.
Predophile: A Prey who can be romantically and/or sexually attracted to a Pred.
The fandom has also taken to using the in-universe definitions of interracial coupling and Pansexuality for their own works - Which the author has explained in their notes.
Pan = Being able to be attracted to anyone regardless of sex, gender identity, or species. note In real-life Pan is only the first two, for obvious reasons.
In-Universe if a mammal dates another mammal that's a different species, but of the same Genus, then they're an interracial couple. note If they're both the same sex only then is the relationship considered Queer. If they are different species but not in the same genus then it is considered both an interracial relationship and a Queer relationship as well - Regardless of the gender of the participants. For example Dolly and Herb are considered a straight interracial couple, but Sheena and her Hyena boyfriend are considered Queer despite being f/m couple due to being outside each other's genus.
Gateway Series: Perhaps unintentionally, but the author has shared parts of the "Judy Is Dead" fan-webcomic, which allowed more people to learn about it.
The author also makes a lot of references to older music that some readers may not be aware of due to their age.
Moral Event Horizon: The Cud Club keeps several extremely vile and prejudiced practices alive simply because they're that greedy. Their predecessors crossed it by inventing those same vile and prejudiced practices.
They Wasted a Perfectly Good Plot: This unintentionally happened more or less due to time simply passing. A little after the half-way point a butt-load of new material about the original script's "shock-collar" story line appeared, to the point that some people have been able to adequately figure out exactly how some of the drafts went. Here for example. As a result some of this material was made too difficult to work into the comic, which in itself had already become it's own story. Fans however aren't disappointed, as they enjoy the author's own story and want them [the author] to continue it the way it is.
What Do You Mean, It's Not for Kids?: Despite being dark from the beginning there are some readers who stupidly thought that this comic wouldn't be a Dark Fic. Some even shared it with younger relatives. Considering Zootopia itself suffered from What Do You Mean, It's for Kids? you'd think people would know better. As mentioned above these people are occasionally made fun of.
This is especially bad when you consider the subtitle for the comic is "Racist Animal Hell AU."
The Woobie: Most if not all of the predators, Nick and Honey being the most prominent ones. Judy herself veers into this at several points. Multiple members of the Hoppes family become this after Judy takes Nick to their home to recover. He allows many members to see just how wrong they were about Preds and they obviously feel extreme guilt afterwards. This later causes something of civil war within the family, between those who've had their eyes opened and those who refuse to see the light.
for example. As a result some of this material was made too difficult to work into the comic, which in itself had already become it's own story. Fans however aren't disappointed, as they enjoy the author's own story and want them [the author] to continue it the way it is.