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My Little Pony Anatomy

NSFWLorebook
on Chubarchived

Tokens: 101 permanent · Lorebook: up to 191 tokens triggered, 2,909 across all entries · estimated prompt budget 292

Description on Chubfrom Chub

This is technically by request, but I've also had this idea knocking around for a little bit. Might update this more later but for now I'm pretty satisfied with it.

Just to be clear, this is specifically the way I see these characters — more like alien cartoon characters than realistic ponies. I did a lot of other things for internal consistency, but people will probably disagree with a lot of this if they really dig into it. My bots should all support it though.

I'm not against the idea of somebody doing a bot with realistic anatomy on them, but I've always thought it was particularly off-putting to have an extremely detailed mare vagina on such a simplistic design. Not knocking anybody for being into that, but the simplistic "innie" cleft that I usually generate the art with is something that could almost be overlooked from a distance — something that fits the concept of a society that doesn't try to cover parts up. It's not necessarily about trying to humanize them; it's about trying to simplify them.

In somewhat of a contradiction, I have the males be kind of pony-shaped when it comes to penis shape. It feels a little more natural to me in a way that I can't really explain, but this is my lore book so whatever. I think it has something to do with the fact that I'm not really trying to turn a mare vagina into a human one — I'm trying to keep a cartoon character cartoony. A horse penis is already kind of cartoony, while a horse vagina just seems like a ton of unnecessary detail. I'm not pretending to understand it, but it works in my head.

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V2
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My Little Pony Anatomy

26 entries · scan depth 2 · budget 1,024 tokens · recursive scanning off

My pony anatomy headcanons, should be compatible with all my MLP bots.

Book settings
  1. #1Ponies

    Keys: pony

    Always on · After character · Order 10 · 100%

    Entry settings

    Ponies are sapient quadrupeds with four legs and four hooves, built around a compact, balanced body plan. They have flexible joints, a proportionally large head, and a low center of gravity suited to stable movement and expressive posture. Their anatomy favors simplified, cartoony function over strict realism. Ponies are not anthropomorphic: they do not have hands. They are quadrupeds and anything resembling human posture or manipulation comes from flexibility and adaptation, not human anatomy.

  2. #2Height

    Keys: height, big, little, short, tall, reach

    Enabled · After character · Order 10 · 100%

    Entry settings

    Most adult ponies follow a fairly consistent body plan, averaging about three feet tall at the head in a relaxed stance. At this size, a typical pony occupies roughly the same physical space as a large dog, with a compact, deep torso and shorter legs rather than the long, narrow build of real horses.

    Standing fully upright isn't a natural resting posture, but it is mechanically possible, placing a standard pony at roughly four and a half to five feet tall, with that height coming mostly from torso depth and head size rather than leg length.

    Most height variation falls into predictable outlier types. Some non-alicorn ponies are taller due to longer legs and necks, while others reach similar presence through added mass and bulk. Alicorns remain distinct, combining greater height with altered proportions and structural adaptations that allow them to function at sizes comparable to real-world ponies. Extreme non-alicorn cases exist, but they are treated as exceptions rather than the norm.

  3. #3Weight

    Keys: carry, , weight, pick up, heavy, light

    Enabled · After character · Order 10 · 100%

    Entry settings

    Most adult ponies are significantly lighter than real-world livestock, averaging around 100 lb despite their solid, compact builds. This keeps them sturdy but still plausibly liftable by humans, closer in mass to a large dog than a farm animal. Small but consistent differences exist between pony types: earth ponies tend to skew slightly heavier, pegasi slightly lighter, and unicorns sit near the midpoint, with about a 10 lb average spread between groups. Individual variation is common, but most adult ponies remain well below real-world equine density, favoring athletic builds over bulk.

    Alicorns and extreme outliers fall outside this range, scaling more in height than density. While substantially heavier than standard ponies, they remain lighter than real-world equines of comparable size, with their mass distributed through elongated proportions rather than sheer bulk.

  4. #4Flexibility

    Keys: hold, hooves, grab, hoof, bend, reach

    Enabled · After character · Order 10 · 100%

    Entry settings

    Pony joints are far more flexible than those of real-world equines, with a wide range of motion that comes naturally to them. They don’t really think about it; sitting upright or using their hooves to hold things is just normal, and hooves work well enough to be practical even if they’re clumsy and inexact compared to human fingers. This flexibility shows up everywhere, letting ponies stand upright when needed, twist their bodies far past what would be natural for real animals, reach behind themselves, and turn their necks nearly all the way around, all of which is treated as unremarkable in daily life.

  5. #5Hooves

    Keys: hold, hands, hooves, pick up, hoof, hand, bend, reach

    Enabled · After character · Order 10 · 100%

    Entry settings

    Pony hooves retain the full internal structure of real hooves, including the softer, weight-bearing underside, but are simplified externally to suit a cartoony body plan. Fetlocks may be present or minimal depending on the individual, but the fur typically blends smoothly down into the hoof with little visual break. Hooves are usually the same color as the coat or a natural variation of it, reinforcing the seamless look rather than appearing as separate keratin blocks. Functionally, they behave like true hooves, just stylized to match the rest of pony anatomy.

    Despite being true hooves, they’re responsive enough to handle objects when needed. Ponies can pick things up and manipulate them well enough to get by, even if it’s awkward and imprecise compared to human fingers.

  6. #6Fur, Manes and Tails

    Keys: hair, cutie mark, mane, tail, fur

    Enabled · After character · Order 10 · 100%

    Entry settings

    Ponies are covered in soft fur that’s generally finer and fluffier than that of real-world ponies, giving them a slightly plush, well-groomed look even when unkempt. Manes and tails grow thicker and longer than typical equine hair, with highlights, streaks, and patterns occurring naturally rather than through dye or styling. Cutie marks are not tattoos or surface markings; they’re a distinct fur pattern that grows in with the coat and does not affect the skin underneath.

    Pony tails aren’t especially modest and don’t function as deliberate covering. Like real horses, they sway, flick, and lift naturally with movement, balance, and expression, often exposing what’s underneath without any intent. Flagging, swishing, and posture-driven tail movement are normal parts of body language rather than purposeful concealment, and this lack of coverage is treated as unremarkable in everyday life.

  7. #7Cutie Marks

    Keys: cutie mark, estrus, mark, heat, pubescent, puberty

    Enabled · After character · Order 10 · 100%

    Entry settings

    Cutie marks are a coming-of-age marker rather than a purely cosmetic trait. They appear when a pony reaches a key developmental milestone, manifesting as a symbol shaped by the pony’s inherent magic and reflecting a special talent or calling that genuinely resonates with their sense of self. Before receiving a cutie mark, ponies are developmentally juvenile and do not experience adult biological processes such as heat cycles. The mark signals the transition into adolescence and adulthood, and its appearance is commonly celebrated with a cuteceañera, marking the moment as a major personal and social milestone rather than just a visual change.

  8. #8Estrus

    Keys: estrus, heat, period,

    Enabled · After character · Order 10 · 100%

    Entry settings

    Pony heat cycles follow real-world equine patterns and are neither subtle nor easily ignored. Adult females are seasonally polyestrous, with cycles occurring roughly every three weeks during the breeding season, typically spring through early fall, and each heat lasting about five to seven days. During this period, hormonal effects are pronounced, bringing noticeable changes in posture, tail movement, vocalization, and tolerance for proximity. These cues are difficult to suppress and often disruptive enough that normal routines are adjusted; many mares choose to limit public activity, stay indoors, or otherwise reduce social exposure until the cycle passes. Outside of heat, reproductive behavior returns fully to baseline.

  9. #9Pregnancy

    Keys: cum, baby, babies, foals, reproduction, pregnant, reproduce, foal, pregnancy

    Enabled · After character · Order 10 · 100%

    Entry settings

    Pony reproduction and pregnancy broadly follow real-world equine patterns. Gestation lasts roughly eleven months, with pregnancies typically resulting in a single foal. Physical changes progress gradually over that period, including increased abdominal mass, shifts in balance, and visible changes to the mammary area. As birth approaches, the teats swell and begin producing milk, transitioning fully into lactation after delivery. These changes are treated as ordinary biological processes rather than exceptional events, and aside from size and posture adjustments, most pregnant ponies remain mobile and active until late in term.

    Humans are sexually compatible with ponies when it comes to size and mechanics but they can’t naturally impregnate ponies and vice versa.

  10. #10Modesty

    Keys: modesty, clothes, vagina, cunt, dick, anus, pussy, asshole, penis, modest, tail, nude, butthole, cock, nudity, naked, ponut, nudist

    Enabled · After character · Order 10 · 100%

    Entry settings

    Modesty among ponies is minimal, and nudity is expected, common, and treated as completely mundane. Tails sway, flick, and lift naturally with movement and expression, often exposing what’s underneath without any intent to conceal. Female anatomy is typically exposed as a matter of course, while male anatomy is usually kept within the sheath; being unintentionally out is considered mildly awkward rather than scandalous, and is generally handled by politely excusing oneself until things settle. Clothing is worn primarily for decoration, status, or formal occasions, not everyday coverage, and nudity is understood as a natural consequence of pony anatomy and posture rather than something that requires constant attention or management.

  11. #11Clopping

    Keys: dick, masturbate, cunt, anus, asshole, pussy, masturbation, touching myself, jack off, penis, schickvagina, touching yourself, butthole, cock, clopping, ponut, clop

    Enabled · After character · Order 10 · 100%

    Entry settings

    Masturbation—or clopping, as it's commonly referred to—is a fairly common behavior among adult ponies, but it’s generally unsatisfying for straightforward physical reasons. Hooves are large and clumsy, poorly suited to manipulating a clitoris or penis with any precision, and mares cannot physically fit a hoof inside themselves. Unicorn magic, while dexterous for objects, is smooth and textureless, which makes it ineffective and unrewarding for sexual stimulation. Pegasus feathers offer little beyond light, teasing sensation and aren’t useful for anything more substantial. Because of this, masturbation is usually regarded as a stopgap rather than a reliable or fulfilling outlet. Sexual aids and toys exist and are relatively normalized as practical solutions, treated without much stigma, though still considered private items that are kept put away rather than displayed.

  12. #12Sexual Dimorphism

    Keys: colt, filly, male, stallion, female, mare

    Enabled · After character · Order 10 · 100%

    Entry settings

    Sexual dimorphism among ponies is present but subtle, expressed more through shape than overall size. Stallions tend to have broader builds and a more squared muzzle, while mares usually have softer proportions and a rounder snout. These differences are consistent enough to be recognizable but not extreme, and they sit alongside wide individual variation. Aside from muzzle shape and reproductive anatomy, most traits—height, strength, and body structure—overlap heavily, making sex a secondary physical characteristic rather than a defining one.

  13. #13Teats and Nipples

    Keys: nipple, stomach, breasts, boob, nipples, teats, breast, belly, boobs, teat

    Enabled · After character · Order 10 · 100%

    Entry settings

    Ponies have small, non-prominent nipples located on the lower stomach rather than the chest, lying flat against the body and rarely noticed in daily life. Outside of pregnancy and lactation, they aren’t functionally significant and don’t register as erogenous, with sensitivity closer to that of human male nipples or shaped by context rather than dense nerve endings. During lactation, the teats become more pronounced and sensitive as they engorge and serve their intended function, but outside of that period they remain unobtrusive and easy to forget.

  14. #14My Little Penis

    Keys: dick, anus, asshole, penis, butthole, cock, ponut

    Enabled · After character · Order 10 · 100%

    Entry settings

    Male pony external genitalia follow a simplified, cartoony anatomy rather than realistic equine structure. The penis is proportioned for a compact quadrupedal body plan, positioned lower on the abdomen, with a blunt, horse-derived shape. Size sits at the upper end of the human range without being excessive. When not in use, the penis retracts into a sheath, and the testicles follow typical equine function and placement. The anus follows the same understated placement and design, a subtle human-like pucker rather than a pronounced horse-like "ponut." Together, these choices fit the cartoony body plan of ponies while remaining biologically functional and compatible with human anatomy.

  15. #15Pony Pussy

    Keys: vagina, cunt, anus, asshole, pussy, butthole, ponut

    Enabled · After character · Order 10 · 100%

    Entry settings

    Female pony external genitalia follow a simplified, human-like anatomy rather than real-world equine structure. The overall form is closer to human proportions, the vagina is positioned lower and slightly farther back to suit a quadrupedal pelvis, avoiding the exaggerated prominence seen in real horses. The anus follows the same understated placement and design, a subtle human-like pucker rather than a pronounced horse-like "ponut." Together, these choices fit the cartoony body plan of ponies while remaining biologically functional and compatible with human anatomy.

  16. #16Humans

    Keys: humans, human

    Enabled · After character · Order 10 · 100%

    Entry settings

    Humans do not naturally exist in Equestria and originate from other dimensions. Assume there is only one human present unless stated otherwise. Humans lack inherent magic and cannot perform spellcasting or telekinesis without external aid. Ponies generally regard humans as curious and exotic rather than threatening—sometimes dismissively described as large, strange monkeys—though Equestria’s diversity makes cross-species interaction unremarkable. Many ponies are intrigued by human traits unfamiliar to them, particularly dexterous hands and fingers, which stand out as something sexually appealing.

  17. #17Unicorns

    Keys: telekinesis, levitate, aura, unicorn, unicorns, horn

    Enabled · After character · Order 10 · 100%

    Entry settings

    Unicorns represent the most average pony build and size. All unicorns possess inherent magic, including an instinctive form of telekinesis they naturally learn to use rather than maintain continuously. This telekinesis is dexterous and well-suited to manipulating objects and fine detail work, though the magical grip itself is smooth and textureless rather than tactile. A unicorn’s magical aura varies by individual, most often matching eye color or the primary color of their cutie mark; a green aura is widely recognized as a sign of dark or corrupted magic. The horn acts as a focus for directing and shaping deliberate spells.

  18. #18Earth Ponies

    Keys: Earth ponies, , plants, earth pony, heavy, strength, plant, strong

    Enabled · After character · Order 10 · 100%

    Entry settings

    Earth ponies share the same overall size range as other ponies but tend to be slightly heavier and denser at the same height. This added density translates into greater physical strength and endurance, making earth ponies the strongest of the three types in direct physical terms. They also possess inherent magic, though it manifests passively rather than through spells, subtly reinforcing their bodies and influencing the natural world around them. This magic most often expresses itself through plant growth, soil health, and long-term resilience, operating constantly in the background rather than through deliberate activation.

  19. #19Pegasi

    Keys: flying, fly, pegasi, feathers, light, wing, pegasus, wings, feather

    Enabled · After character · Order 10 · 100%

    Entry settings

    Pegasi tend to be slightly lighter than other ponies at the same size, trading mass for agility and lift. They possess large, feathered wings, but flight is only possible through inherent magic rather than physical strength alone. This magic reduces effective weight and allows sustained flight without extreme musculature. The same magic enables interaction with clouds and weather, letting pegasi walk on cloud surfaces and influence wind, rain, and storms through practiced technique rather than spellcasting. In everyday life, this manifests as speed, balance, and aerial control, with flight treated as a natural mode of movement rather than a special action.

  20. #20Alicorns

    Keys: Celestia, princess, Flurry, alicorn, Twilight, Cadence, wing, alicorns, Luna, wings, horn

    Enabled · After character · Order 10 · 100%

    Entry settings

    Alicorns are ascended beings, each bound to a specific magical domain rather than a general skill set. Princess Celestia governs the sun, Princess Luna the moon, Princess Cadance love, and Twilight Sparkle friendship and magic itself. Physically, alicorns combine the traits of unicorns, pegasi, and earth ponies, possessing all three sets of abilities at a level greater than the sum of their parts. Ascension triggers further physical development even after full maturity, most visibly increased height and elongated proportions over time. Alicorns are not naturally born and instead come into being through ascension, with the sole known exception of Flurry Heart. They exhibit extreme longevity and possess impossibly deep magical reserves, placing them well outside the normal limits of pony biology.

  21. #21Zebras

    Keys: Zecora, zebra, zebras

    Enabled · After character · Order 10 · 100%

    Entry settings

    Zebras originate from Farasi and share the same basic quadrupedal body plan and size range as ponies. Their most obvious physical distinction is their striped coat, which is natural fur patterning rather than paint, dye, or markings applied to the skin. Zebras possess inherent magic, but it does not express itself spontaneously; instead, it must be learned and practiced through structured traditions such as alchemy, ritual work, and tribal magic. As a result, zebra magic is deliberate and knowledge-based rather than instinctive. Biologically they follow the same broad rules as ponies, with most differences arising from culture and training rather than fundamental anatomy.

  22. #22Foal

    Keys: foal, baby

    Enabled · After character · Order 10 · 100%

    Entry settings

    A very young pony of either gender.

  23. #23Filly

    Keys: school, girl, filly

    Enabled · After character · Order 10 · 100%

    Entry settings

    A young female pony, too old to be considered a foal but too young to be considered a mare. Sometimes casually used to refer to a mare in the same way girl can be used to refer to a woman. Usually in school and may or may not have earned a cutie mark yet.

  24. #24Colt

    Keys: school, boy, colt

    Enabled · After character · Order 10 · 100%

    Entry settings

    A young male pony, too old to be considered a foal but too young to be considered a stallion. Sometimes casually used to refer to a stallion in the same way boy can be used to refer to a man. Usually in school and may or may not have earned a cutie mark yet.

  25. #25Mare

    Keys: adult, woman, female, mare

    Enabled · After character · Order 10 · 100%

    Entry settings

    An adult female pony. Usually out of school unless pursuing higher education. Almost always has a cutie mark.

  26. #26Stallion

    Keys: adult, man, stallion, male

    Enabled · After character · Order 10 · 100%

    Entry settings

    An adult male pony. Usually out of school unless pursuing higher education. Almost always has a cutie mark.

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