ACZ (Anatomically Correct Zoo)

You spin up your favorite LLM, load up that 1:1 recreation of the family dog, a shiver runs down your spine in anticipation... And out between his thighs springs a human pecker...

Version 1.2 · Last Updated: 5/30/25

Grab the lorebook right here →

Announcements

• V1.2 Released! New Species! Birds are here! Deepest apologies for the growing gaps between updates. its only gonna get bigger i hate to say.
  • Added the Species - Avian
  • Readjusted a number of entries
    • Reworked nearly all entries that pointed exclusively at char to be POV neutral (i.e. instead of "char's prehensile tail" they now say "prehensile tails"). I admittedly lost the plot some time ago after cats and thanks to a user pointing it out, didnt realize that some concepts specifically said that char had these concepts alone which meant that the concept couldn't apply to the user as well in the same given situation.
  • Added new size overrides
    • Char is MACRO (for those who like building sized chicks)
    • User is MICRO (for those who want to go cave diving)
      • these two were inspired by this guy on chub. i figured i might as well appeal to that demographic while im here.
  • Added entrie(s)
    • added Cum to CANINE because the little details are important

You can contact me via:

• Discord: Lost_ontheMoon (preferred)
• Discord server: The Moon
• Chub comment section: https://chub.ai/lorebooks/LostontheMoon/anatomically-correct-zoo-9dc1c8496919
• Email: poorlydrawnfursona99@gmail.com (checked infrequently, im sorry if it takes a week...)

Introduction (Hello there)

Hello i am Lost. I love flat chested women and fluffy tails. I also made this lorebook.

Chub.ai has failed me too many times for comfort. From the first ACZ being nuked for no apparent reason, to the broken comment section, to the stripping of metadata that made the lorebook unusable to everyone downloading it, I'm a bit worn down with it all. While i wholeheartedly respect Chubs freedom in term of what it allows, the site itself as a method to host things to download is spotty and unreliable.

Behold the Rentry. This is where ACZ (and my other lorebooks) will live from now on. All future releases and updates will be available exclusively on this page for your downloading pleasure. Don't worry, I won't remove the original lorebook listing from Chub, but I will halt updating that one and instead use it as a sort of billboard to redirect people here (maybe you were one of them? Hey there.)

TL;DR: I'm not reading all that. What Is This?

(It’s a furry anatomy encyclopedia for AI roleplay.)

ACZ aims to be the ultimate lorebook for furry roleplay. It helps your AI understand exactly how it should visualize and roleplay various animals and their many unique anatomies by providing custom chunks of detailed information, giving your AI more context to work with, and making your roleplay richer and more accurate/immersive. Think of it like a Pokedex that your AI can quickly reference to get a clear picture of what it’s dealing with. The more info an AI has, the smarter it is, so lets just give it a bunch of it.

Every entry in the lorebook is turned OFF by default. Simply find your animal, and turn ON any details about that animal you want your AI to have a better understanding of. It sounds complicated, but you'll get the hang of it the more you use it.

You can find the blue download button at the top. Don't let that massive wall of text scare you, just simply Ctrl + S to save the json file to your computer.

Tags & Categories

The lorebook is broken up into various categories, with each lorebook entry prefixed with tags (those brackets that say something like "[O,C,S]"). The tags specifically are admittedly only important to me and you're free to delete them, but you yourself can use them to quickly summarize what in entry is or does.

Gender Tags

Function Tags

Special/Other Tags

🐾Species that ACZ currently cover🐾

Tested With:

Ive been writing ACZ for about a year now and through that time ive had many daily drivers. "Tested with" isnt really the right word, its really just what i was using at the time and my opinion of the model when using the lorebook. Ive only ever used local models so i have no opinions or advice on any API or cloud services.

Maid Yuzu V8 Alter (Q3M)

• Instruct: https://files.catbox.moe/uhggok.json
• Context: https://files.catbox.moe/xi3cq3.json
• Preset: https://files.catbox.moe/z7cnej.json

Beautiful interpretation and weaving of information. Night and day between on and off. Maid Yuzu has always been pretty good as making sense of "broken" information such as the nested bracket format this Lorebook is written in, though I cant exactly promise the same for others. Only had an issue with the minute-minute details like completely forgetting to retract the sheath until AFTER the whole sex scene was done, or exponentially expanding the knot every time we cut back to it(ouch), but I'm excited to see what it can do with more complete and fleshed out information.

Starcannon V3 12b (i1-Q6_K)

• Instruct: https://files.catbox.moe/0ylp5r.json
• Context: https://files.catbox.moe/ppzyi8.json
• Preset: https://files.catbox.moe/znqxs3.json

GOATED. I'm going to advertise this finetune right now because in my professional opinion this 12b surpasses any 32b ive ever used in terms of RP(but its admittedly pretty trash at anything else). half of the time i didn't even need to use this lorebook, it picked up on the fact that a dog would need to prop up against you to reach your face, or that animals have fur that gets matted and gross during action. while you can definitely "feel" that its only 12b, having a bad habit of repeating example dialogue verbatim and tends to speed run scenes, it has baffling bang for the size i highly recommend you try this one. out of 100 messages, only one reply had GPTism(cliche "shivers down spine" or "a testament to-" type beat).

Starcannon V5.5 12b (Q8_0)

• Instruct: https://files.catbox.moe/0ylp5r.json
• Context: https://files.catbox.moe/ppzyi8.json
• Preset: https://files.catbox.moe/qu0ou9.json
• Preset with XTC: https://files.catbox.moe/d97q1f.json

Now i don't mean to brag, but im kinda the reason this one exists~. Mixing Starcannon V3 with an unofficial continuation, V5, there is a MASSIVE jump in prose (in a good way). The detail this thing generates activated every neuron its honestly scary. its very good at mentioning the subtly details that just really paint the picture, not to mention the insanely vivid description of hot and heavy stuff itself had my busting before penetration even happened (true story). the preset ive provided milks the model of all the creativity it can before absolutely going insane. fiddle with smoothing factor. lower will make it more stable(but kinda lame), higher will make it more creative(it may not make much sense after 42, but dear god can it get creative. it even threw in that leg up split position specifically for the deeper penetration). its of course still just a 12b, so its not exactly the best at keeping track of things especially with multiple characters. pick this over Starcannon V3. half of the time i didnt even need to use the lorebook which is both awesome and worrisome(that makes all of this work redundant oh no). my favorite bit of information 5.5 is well aware of is that anthros cant get humans pregnant. i discovered after noticing a trend that many furries i tried to erp with kept turning down using a condom because "its not like our biologies mesh that way anyways".

MagMell 12b (Q6_0) My daily driver!

• Master Preset (includes all of context, instruct, and preset): https://files.catbox.moe/8ogijv.json

This thing is incredible. Dang near perfect. Unlike my old daily driver Starcannon it's really good at keeping personalities intact during and even after the deed which is something i never really thought id need to appreciate until now, as well as doesn't use porno talk as much(though it still uses some corny lines admittedly). its not too horny out of the blue, and interestingly enough, its very understanding of boundaries(which explains the painfully lackluster guro). if you ask a character to back off, they wont just simply try even harder like im use to from other models. makes flirty characters actually fun to be around.

i will also say that i recommend you use my settings that I made as the recommended by the creator are really really bland. I've manage to find settings that really bring out its creativity, though even now i still tweak them so keep in mind these might not be up do date with my own.

⚙️ How to download and install the lorebook

• At the very top of this Rentry is the blue download button, clicking it will take you to a hosting site called catbox. You'll immediately be greeted with a massive wall of text. You didnt break anything, that is just the lorebook in raw text form.
  • Some browses (namely Firefox and its forks) really don't like catbox for not being "secure", blocking you out and giving you a "SSL_ERROR_RX_RECORD_TOO_LONG" or similar. Its a hassle and im sorry, but if this happens to you, the only workarounds i found were switching to Chrome to open the link or using a VPN to switch states/countries.
• To actually download the lorebook, simple press Ctrl + S or right click and find save as. This will give you a .json file. Don't worry about what a json is, just save the file to wherever you want on your computer. The file will have a name made of random letters and numbers (something like "ayfuov.json"). Catbox does weird things to the names idk, just rename it to ACZ or whatever floats your boat.
• Moving over to the SillyTavern interface:
  1. look for the book icon up at the top of the page. it should be near the center.
  2. Find the little page icon with the arrow pointing into the page. This is the import button. find the file you just downloaded and once you get the "successes" popup you're all set for the next section!

Using the lorebook

Lorebook Settings

• Turn on Recursive Scanning.
• Set scan depth to 4
• Set context % to 45%(assuming your using at least 12000 context)
• Set Global lore first.

For proper setup regarding how to organize and straighten out the entries:

• Set sorting order to order↘.
• Make sure to set x/page option too 500 to reveal all of the available entries.

Entry Activation(with examples)

Whether using this lorebook is completely self explanatory to you, or daunting and overwhelming to you, i promise its very simple and straightforward in the end. Ill do my best to explain how to use the lorebook if only for documentation's sake, going through a series of scenarios to hopefully showcase the versatility of the lorebook.

All entries aside from the separators are greyed out and turned OFF by default like this:

Depending on who or what animal you are interacting with, you simply turn ON any detail about that animal you want the AI to be a little smarter or creative about. Here are a couple somewhat "walkthroughs" of how you would go about customizing your lorebook:

Example 1 (Female feral dog)

Say that i am using this female dog character card(wonderful card btw). You would simply find the CANINE(dog) section within ACZ and switch on whatever you want your AI to reference in your story:

• She is female, so of course lets start with turning on Vagina. This gives the AI a painfully detailed description of her cookie, what it looks like, where its at, and most importantly what makes it tick.
• I want her sniffer to play a big part in what im about to do to her, so lets turn on Olfactory. Now my AI will know that her sense of smell will be very important to her in how she interacts going forward.
• She is a Doberman, and i like my Doberman with that little stump of a tail. Lets turn on Docked Tail to let the AI know this detail is a prominent fact about her and it is encouraged to do something creative with it.
• While not my thing, i might as well enable Teats. Depending on how creative my AI is, im sure it'll find a way to do something hot with it to surprise me~.
• I plan to let her do some absolutely heinous things with her mouth, lets give the AI some ideas on what a mouth full of teeth and tongue can and can't do by turning on Blowjob. Now things should be real interesting.
• Lastly, i know for a fact that my particular AI is trash at remembering that dogs do not have fingers, can not move like a human, and are not as tall as humans. just to be safe, lets turn on the base for the dog species B - Dog. This will brutally hammer home her shape as a quadruped. I wont always need this if im using a smarter model, but its good to have just in case the AI is having a bad day.

That would leave us with this. Were ready to rock aint that neat?

Example 2 (Male anthro horse)

Say that i am using this anthro horse character card. You would simply find the EQUINE(horse) section within ACZ and switch on whatever you want your AI to reference in your story:

• He is male, so hes of course got a dick. Lets start with turning that on. Notice that Penis has a (1/5) at the end of it. Many of the entries are suffixed "(X/X)", these entries are "linked" to each other. whenever turning on an entry, consider turning on all neighboring entries tied to each other for the best experience(you don't HAVE to if you don't want a specific detail to be a factor in your RP, but just know that they are intended to work together for "full effect"). With that in mind, lets complete the set by turning on the Sheath (2/5), the Medial ring (3/5), and the Flare (4/5). With this, the AI has a painfully detailed description of each of these parts to create a very vivid picture of the whole horse cock.
• The Flare entry has a Flar*ing* (5/5) event just below it. This is an EVENT entry that can trigger under certain conditions/times and describes what exactly that means. I don't want him to flare just yet so i wont turn on this last one until sex actually happens.
• Now this time, i intend to use MY mouth to do some heinous things to this guy, lets turn on Blowjob (to). This gives the AI (and more importantly Char), ideas of how to proceed with any mouth stuff involving a dick of his size and/or shape in the mouth of a human(or otherwise). It can get creative now that it is well aware that the flare exists and has consequences~
• This horse DOES in fact have the shape of a human being an anthro, so turning on the Base - Horse would actually confuse the AI and thats bad. The Base is only needed if he was a quadruped feral, so we can safely never use this.

That would leave us with this pretty minimal setup

Example 3 (Futanari Cat-horse anthro)

You are by no means limited to one animal at a time, the benefit of the lorebook being modular is the freedom to mix and match. Give a dog a horse dick, give a horse a dog dick, give yourself a dog dick, create the chimera Discord himself by stacking a piece of ever species on top of a rabbit idk, man.

Say you have this little number here. If you know how to navigate the lorebook by now then its just a matter of what tickles your fancy.

• She is a cat. Lets find the Feline species. Being a futanari, she has a vagina in addition to her penis. While i could specify a mare's vagina, i wanna give her a cat's so lets turn on feline Vagina.
• Now her cock. Her dick belongs to a horse which if i remember correctly cats do not have. Lets find the Equine species and turn on all of the equine penis entries to lock that in. If you're curious if a horse cock paired with a cat pussy will confuse the AI. It will not. The lorebook is worded in a way that convinces the AI that this is just a fact of her being same with if you also tacked on a dogs knot or made her cold-blooded like reptiles. AI is pretty dumb.
• Lets get a little wild. I plan to 69 this chick in my story. Lets turn on the cat's textured tongue to let the AI know that her tongue is not like how im sure it would assume, Olfactory to add that extra layer, and turn on both cat Blowjob and horse Blowjob. This will give the AI the info it needs if and when my human(or otherwise) mouth meets her soon-to-flare horse cock, and that deathtrap of a cat mouth meets my fragile human(or otherwise) cock.
• Now that sounded like a lot, but really it just runs on e621 "tag what you see" mechanics. If its in the story, just turn it on and let the AI figure the rest out.

That hodgepodge would look like this:

Example 4 (Male feral Felkin)

Now im gonna be honest and admit i don't really know what a Felkin is, but they're pretty cool and unique so here we go.

Say you have this guy. Im sure you've noticed that a 'Felkin' is not, and does not look like, any of the species listed in ACZ. But as established, ACZ runs on e621's "tag what you see" rulings. While a Felkin is not a "normal" species, it is made up of recognizable parts.

• Lets get the equipment out of the way. He has an equine cock, so equine Penis (1/5), Sheath (2/5), Medial ring (3/5), and Flare (4/5) get turned on (and Flaring (5/5)). simple enough. Some Felkins are depicted as having a knot. the one in this example does not, but i want to give him one anyways. I can only assume the knot would function like a dogs, so lets tack on canine knot (4/5). We don't have to worry about the connected (x/x) entries because the knots all we need from the bunch, though knotting (5/5) will be needed later in the rp for sure~
• Our Felkin is feral/quadruped, now i don't trust that my AI is smart enough to remember that fact so lets enforce that rule. Felkins are actually feline (i just found that out haha) and that's great because there is a Base for big cats. This base clarifies that char is a rather imposing and potentially dominating creature, while the base does not actually specify a specific big cat like a lion or panther, it does allude to char being the size and shape of one. This means that we can turn on Bigcat base to tell the AI that char is liken to a big cat and should be depicted as such.
• while were at it, lets tack on a few quality of life entries, knowing that the Felkin is a cat lets turn on cat Olfactory, and Tongue.
• Our Felkin is described as being huge and hulky, while our bigcat base does establish a large size, lets have a little fun ant try out one of the size overrides at the top of the lorebook. char is HUGE or Dommy Mommy will work to override any descriptions of char's size into what we chose, HUGE in this case. char is HUGE specifies and enforces that char is a beast of an entity, heavy, innately dominant, takes up too much space, a good time if you ask me. Of course we don't need to add this, but there could be interesting outcomes so its nice to experiment.

And that leaves us with this:

Frequently asked Question/Comments

• The format you wrote the lorebook in is garbage. Why are there so many parentheses?
  • (refer to #4 in Side notes below) Its a format that i sort of created*. It was originally a format called "P-List", but over time ive sort of just done my own thing with it. This format very reliably summarizes a relatively massive chunk of info into a .ZIP'd block the AI can digest. Its admittedly not so easy on the eyes, but the point is for it to be for your AI, not you. The AI will have no problem unwrapping and parsing the info even if you cant. If you need to understand what's written, just ask the AI to "explain it thoroughly" and read what it tells you.
  • Thats called "nesting", putting a parentheses inside of a parentheses. This lets me essentially explain everything i need to say before a sentence is even finished. While ive learned recently its best never to nest farther than 5 deep, sometimes its necessary when i really need to get something across, and that leaves entries with sentences that end with a wall of closing parentheses like this)))))))
• This lorebook is laughably inaccurate, "Anatomically correct"? schoff
  • (refer to #3 in Side notes below) Im aware that many entries aren't as anatomically correct as i advertised and especially nowadays. The reason for this is because one issue i ran into in ACZ's infancy is the lack of vibrancy. I originally described anatomy in the entries like i was giving a lecture, very detailed and accurate. i had assumed this was best, but the resulting AI very clearly parroted. This made resulting erp very very awkward and boring. It felt like watching a nature documentary with play-by-play commentary and i was incredibly flaccid the entire time. To combat this, i embellished a lot of detailed, added a lot of "hot and wet"s, upped the lengths and depths, added more appealing textures and sounds and generally went the sex sells route with the whole thing from the ground up. This worked wonders, but negatively affected anatomical realness. To that im sorry.

Side notes

0. While ACZ was originally designed primarily for animals, ive made it in a way where it can also easily apply to humans. many CONCEPTS are perfect for spicing up regular normal people ERP. (ive moved said entries to DERP so it would be a lie to still claim that sorry. We only bang animals here.)
   • ACZ was split in half on 1/10/25 in order to keep the lorebook from becoming too convoluted. This other half outlined various specific anatomy stuff like the female cervix or the male prostate. I highly suggest you pair this sister lorebook to add even more depth to your RP.
1. Remember that this lorebook simply provides ideas and inspiration to your AI. It is up to the AI what tidbits of the info it actually decides to incorporate into its response. every model is different and some may use more or less. some may recite info verbatim while some ignore completely. everyone's mileage will vary. Try not to blame the lorebook.
2. Garbage in, garbage out. Don't expect this Lorebook to just magically make your RP experience perfectly effortless. Be verbose, creative, use more than just a single, bland sentence and put a little effort into your end of the scene/scenario. This Lorebook is simply a guidebook for you Ai, it'll now know how to handle itself, so just go wild.
3. While I wanted to keep everything as scientifically and anatomically correct as possible, I did and will embellish a few details to make the resulting RP a little spicier for obvious reasons such as adding more appealing textures and enhancing general sex appeal instead of just creating a lecture on anatomy.
4. This lorebook is not for YOU, its for your AI. The format in which I wrote the entries are designed to compress lengthy info into neat and bite-sized chunks of relatively token-light text. It may look like nonsense to you, but your AI will understand it just fine. HOWEVER this can potentially confuse some less capable models (0.5-3b models) causing them to process information in the incorrect order, creating the literary equivalent of a cursed stable diffusion image. If this issue becomes prevalent, I'll adapt.
   • Because of how hyper-specific these descriptions are, its possible this lorebook may do more harm than good as the AI tries desperately to piece together this visual puzzle. i wont know until i get more feedback. While yes i could've very easily used the reliable "plain text" format. Ive never once encountered comprehension issues with my personal format. i feel it allows the AI to leverage its strong suit of inspiration/creativity. but i will admit that my format is a pain to modify.
5. The lorebook may impact your model’s general creativity, forcing it to replace what it WOULD have said with what the encyclopedia is telling it to say. Whether this is a good or bad thing is up to you.
6. I'm no zoologist. It is very likely I botched the descriptions or naming of some body parts. Surprise, surprise, I have also never touched a girl in my life so it’s likely my descriptions of female anatomy may be muddy.
7. i had to do a lot of... research to make sure my info was right...
8. If you're curious about all those extra buttons and stuff i have in the pictures that you do not, i use a LOT of extensions. What are the extensions? Thats a great question!

Update Timeline

• 8/5/24: V0.0 Initial release. Just the description. No actual entries.
• 8/6/24: V0.1 added DOG. male and female.
• 8/9/24: V0.2 added HORSE. male and female.
• 9/8/24: V0.3 added PIG. male and female.
• 10/5/24: V0.3.5 created basic method of organizing categories with emojis for mobile users and aesthetics. split both knot and flare in half and turned them into EVENTS. made most EVENTS work better by adding better triggers and recursion settings.
• 10/15/24: V0.4 added CAT(male and female). rewrote the descriptions for the placements of sheaths for DOG and HORSE. made belly bulge less visceral.
• 10/26/24: V0.4.5 added BASE after realizing a lot of models struggle to remember that animals don't have hands. added "char is HUGE/TINY" to help portray awkwardly sized chars.
• 10/31/24: V0.4.6 added the rest of the size overrides for what i believe are the most common sizes to interact with. Added a "user POV" variant to each animal base for use in scenarios where you ARE said animal. Split the entry for "bottoming out" in half and created "partial penetration" because i love it when it cant fit.
• 11/19/24: came to Chub and found that my original lorebook had been removed for violating some kind of bogus image ruling. Re uploaded the lorebook via a backup (always keep a backup y'all). Renamed "zoophilia" to simply "Zoo" to play it safe. all of my stats have been reset so lets hope i can climb back up the search results...
• 12/11/24: noticed ratings and comments glitched out and dont work so i reuploaded AGAIN (im going to cry)
• 1/10/25: V1.0 (hooray) added REPTILE and marking the completion of the base set of species for ACZ. from here i can now expand on old concepts and add more obscure species now that the priority set is out. Removed most of the CONCEPTS and migrated them to a new sister lorebook DERP. Shortened entry tags to a single letter to shorten the entry names enough to actually be readable on mobile devices.
• 3/16/25: Created this rentry and migrated all info from Chub to here. ACZ will now be found here. Spent a good while rewriting the documentation to be more informative and helpful.
• 3/25/25: Established a Discord server called "The Moon" as a central spot for feedback or whatever it may eventually devolve into. Opening a discord Is cliche, but idk it could be fun.
• 5/11/25: may or may not have forgotten the password to the ACZ Rentry and you may or may not be looking at an entirely new copy of the original site.
• 5/30/25: V1.2 added AVIAN. reworked all entries to be more generalized and not exclusive to char. added cum to DOG. updated my Magmell master preset to V1.5.
• 6/21/25: created a frequently asked section to put the primary 2 comments to bed.