A/B/O by Shodo

1. #1Alphas

   Keys: Alphas, Alpha, Alpha’s

   An Alpha makes up about 25 percent of the population, and are typically the more dominant members of society. Their pheromones are strong, making them easy to sniff out from a beta or an omega. Alphas have a better sense of smell (used to find an omega to mate with, but it helps all around), put on muscle and retain it easier, and are usually taller. Alphas can be both male and female, both of which have male reproductive organs (however, female alphas have both, developing their penis at the age of 18 along with the development of their secondary gender. The penis is formed from the woman’s clitoris, and while it doesn’t have visible testes, they’re still present. Female alphas can get pregnant, but it’s exceedingly rare and they often miscarry).

2. #2Omegas

   Keys: Omega, Omega’s, Omegas

   Omega’s make up about 25% of the population, and are usually more submissive. They have pheromones that are specialized to be appetizing to alphas, but can also be smelled by betas. Omega’s tend to be shorter, with wider hips/a wider pelvic opening to make child birth easier. They have naturally looser muscles, which makes insertion easier when having sex, but makes it difficult to build muscle and retain them. Males and females can be omegas. Females don’t have much biological change when their secondary gender develops, however, males begin to produce slick from their anus. This functions similarly to discharge on a woman—keeping the area clean wet for easier insertion during sex.

3. #3Betas

   Keys: Betas, Beta, Beta’s

   Beta’s make up 49.8% of the population, and are a mix between alphas and omegas, comparable to a tame version of both. Female betas have similar traits to regular females, and male betas have similar traits to regular males. They have pheromones, but they’re often lighter in scent. They do not go into heat or rut. Because of this, they are often considered to be more reliable than an alpha or a beta, making it easier to find employment.

4. #4Enigmas

   Keys: Enigmas, Enigma’s, Enigma

   Enigma’s make up .2 percent of the population, making them exceedingly rare. Enigma’s are usually considered to be an enhanced version of a beta. They have the fertility of an alpha or an omega, and their pheromones only activate in certain situations—making them not overwhelming at all times like an alpha may be, but still activating if they need to intimidate, charm, seduce, or whatever else they feel like doing. Male enigmas produce slick like a male omega, and female enigmas develop a penis like a female alpha. Despite this, they don’t have the reproductive drawbacks—both male and female enigmas can get pregnant and get someone else pregnant as easily as an alpha or omega could, with the normal risk of miscarriage instead of the increased one with alpha pregnancy. They do not go into heat or rut, and naturally have a sense of authority. Job opportunities are basically thrown at them, and many enigmas choose to become famous actors, singers, writers, or whatever else because of their natural authority over others.

5. #5Secondary Gender

   Keys: other gender, beta, second puberty, secondary puberty, omegas, omega’s, enigmas, enigma’s, enigma, second gender, omega, beta’s, alpha, alpha’s, betas, alphas, Secondary gender

   Secondary gender develops at the age of 18, and can be one of 4 things: Alpha (25% chance), Omega (25% chance), Beta (49.8% chance), and Enigma (.2% chance). Secondary gender has a second puberty, of sorts—a person goes through two years of biological change before they’re fully their secondary gender and ready for reproduction. That said, even before second puberty, it’s fairly common for young people to show signs of their secondary gender. For example, a young female may have a large clitoris, which will develop into an alpha penis when they’re 18-20, and a young male may produce small amounts of slick before they begin second puberty.

6. #6Pheromones

   Keys: pheromone, pheromones · Secondary:

   Pheromones are smells produced by all secondary genders. They develop their signature pheromone smell during their second puberty, but they have a more tame version of it beforehand. Pheromones can smell like anything, from fruit, to flowers, to smoke, or to anything else. Pheromones are released from the scent gland, located at the nape of the neck.

7. #7Knotting

   Keys: knot, knotting

   a knot forms at the base of an alpha cock during ejaculation. The knot functions as a plug to keep an alpha’s seed inside of their partner to ensure fertilization. The knot is oval in shape, and forms at the base of the penis. While it varies from person to person, the knot tends to be about 4-9cm thicker than the rest of the penis, which can make its entry painful. The knot stays formed for 20-40 minutes, before the penis goes back to it’s normal size and the alpha can safely pull out.

8. #8Slick

   Keys: Slick, Slicking

   Slick is a thick, clear substance produced by omegas. Its purpose is to serve as lubricant for insertion during sex, and as a natural way to keep the area clean. An often excessive amount of slick is produced during sex, as the body is preparing to take the knot of an alpha, which can be large and painful. slick makes the insertion significantly easier.

9. #9Rut

   Keys: rut, rutting

   Rut is a period of about a week where an alpha has a heavily increased sex drive. An alpha in rut tends to get more possessive over their partner, be quicker to anger, loose patience faster, and just have a significantly increased sense of frustration no matter what they do. During a rut, it can take around 5 ejaculations a day to manage it, but that can vary significantly on a person-to-person basis.

10. #10Heat

    Keys: nesting, nest, Heat

    an omega enters heat for about a week every month. In this state they are significantly more fertile, and produce a significant amount of slick basically 24/7. They get a heavily increased sense of smell, which can be nauseating and/or overwhelming, making them stay at home during their heat. When at home, omegas exhibit a behavior called nesting. This is when an omega finds a space, usually small, dark, and cool, and fill it with things like blankets, pillows, clothing, etc. Its purpose is supposed to be for when the omega gives birth, but in the modern day, with the existence of hospitals, it’s rarely used for that, or used at all.

11. #11Marking and Imprinting

    Keys: mark, imprinting, imprint, marked, marking

    marking, also known as imprinting, is when an alpha bites the scent gland of another person, causing the scent gland to take in the DNA of the alpha via their spit. The scent gland takes this DNA and uses it to mix the alpha’s scent with the other scent in the gland. While an alpha can imprint on multiple people, the person they imprinted on is stuck with that alpha’s smell for the rest of their life; they can’t be imprinted on again. There are both laws and social expectations that if you imprint on someone, you stay with that person no matter what. Socially, it’s sort of like marriage, but more permanent, and can’t be taken back.

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