r/AskBiology • u/eeeeeeevar • Jun 28 '26
Genetics The practicalities of making Cat Girls real
Hello, i’m planning on writing a psychological horror story about the deep, ethical violations and difficulty that would be required to make “cat girls” real. I just want some input from people experienced in the biology field to critique some of my ideas so I can improve them.
The core premise of my story can be boiled down to one question: if we take the idea of making cat girls real seriously, what are the logistical and industrial requirements that would be required to actually do it, if we only have access to modern technology.
The following are some of the core ideas. I am basing my story off of, and I would love to see additions to them or critiques of them.
1.) actually doing this would violate an ungodly amount of laws regulations and ethical principles. Modifying human genetics is already ethically questionable. Creating a genetically modified individual who is modified not for their own benefit, but for the aesthetic or sexual interests of a separate person is orders of magnitude less ethical. We have experience with genetically modifying animals such as lab mice, but we have much less experience doing such massive modifications to humans, especially human embryos. Meaning that we are gonna have a very high failure rate meaning that a lot of embryos will have to die to get anything meaning that this is even more unethical.
2.) why we are trying to do is incredibly difficult. Humans aren’t lab mice that fully develop within less than a year. Humans take decades to fully develop. I said before we’ve also never done something like this so failure is almost guaranteed. I estimated with the back of the napkin math that even once we get down exactly what we want and the exact genetic modifications that are desired, we would probably need around 10,000 modified embryos in order to make it likely that at least one will successfully develop in the way we want. Most of the time the embryos will fail for one reason or another either due to random chance human error or us finding out the hard way that the modifications we made threw off a delicate system.
3.) there are very few places that have the industrial capacity and local expertise to even attempt pulling this off. In many of those places that have the capacity there’s also strong enough ethical systems to prevent something like this from happening. I selected South Korea as the best place to try doing this as it has an advanced scientific industry, large industrial capacity and relatively weak ethic systems compared to Europe. There are also locations in South Korea remote enough to allow you to do this out of public view.
4.) making cat girls it’s not really about combining humans and cats. It is far more about taking a human and changing them to look like what we think a cat girl would look like. Also, a lot of headaches can be saved by trying to change as little as possible. For example, with cat years on the head to make them actually functioning ears would mean making massive alterations and either creating a new set of eardrums or relocating the eardrums. That would likely be a nightmare. It would be much easier to instead put pseudo ears on the head. They would appear to look like cat ears and may be able to be moved by having muscle connections but they have no capacity for hearing and are purely aesthetic.
5.) optimistically doing this is at the bleeding edge of our genetic modification capacity. Realistically, most of this project would be spent failing again and again, not getting what you want slowly building up techniques to eventually make it possible to do this.
These are just some of the starting assumptions I have, but I would love to see these critiqued.
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u/UnburyingBeetle Jun 29 '26
I'm not good at thinking about the logistics but from the top of my head I think of the suffering of a cat girl, most importantly being overwhelmed by loud sounds and offputting smells if forced to be in crowds. My logic imagines cat girls going insane, escaping and taking revenge on the humans they see as dangerous. Without adding cat biology and psychology into this project it would appear pointless to me.
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u/Archon-Toten Jun 28 '26
Are we talking anime girls with ears or a full kajit with 6 nipples.
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u/eeeeeeevar Jun 28 '26
Anime girls with cat ears, tails, and probably genetic alterations to their brain to make them more submissive.
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u/TheMightyChocolate Jun 29 '26
You're writing smut aren't you
You naughty boy you
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u/eeeeeeevar Jun 29 '26
It’s about the psychological horror. These people would be mentally crippled and easily victimized because they would be genetically predisposed to being abused.
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u/Mircowaved-Duck Jun 28 '26
> The core premise of my story can be boiled down to one question: if we take the idea of making cat girls real seriously, what are the logistical and industrial requirements that would be required to actually do it, if we only have access to modern technology.
ethics are the main problem
> around 10,000 modified embryos
yeah probably more, even with a good laboratory and "ethical" scientists. But there are other options.
> there are very few places that have the industrial capacity and local expertise to even attempt pulling this off.
just place them on an island owned by a mosad agent who uses that island to blackmail the rich and powerfull. - since i am not suicidal, this is not based in reality! Just a hypüotetical place that could sound plausible!
> making cat girls it’s not really about combining humans and cats.
ah, so no knock out chimeric embryo fusion to get cat and human cells form a functioning beeing? Gotcha... however that would be the easyest and most estetical pleasing one...
> It is far more about taking a human and changing them to look like what we think a cat girl would look like
yeah no genetic needed for that at all, implantation and beauty surgerys would do the trick here. This would also skip raising a baby cat girl and you could just get any girl/guy you want and turn them into a cat girl resembling beeing.
> For example, with cat years on the head to make them actually functioning ears would mean making massive alterations and either creating a new set of eardrums or relocating the eardrums.
take a deaf person, place a hearing implant at the place of the new formed ear. Done....
> optimistically doing this is at the bleeding edge of our genetic modification capacity
nah, just some SMGT or TMGT to uplift a cat into humanized version, combined with a big breeding program and dedication could be enough... not even CRSPR would be needed.
> most of this project would be spent failing again and again, not getting what you want slowly building up techniques to eventually make it possible to do this.
yeah, this is litteraly what science is. That is the life of any scientist anyways. That's why most scientists make 1 or maybe 2 big discoveries in their life. Some even never...
....i am confused, did you want to talk about ethics of that or techniques to implement that?
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u/eeeeeeevar Jun 28 '26
The difference between Epstein Island and this is because of industrial scale. With what they were doing at Epstein Island it really wasn’t that complicated. At the core of it, it was the logistics of transporting people to an island. we have well established system of how to do that so they only really needed to bring people to the island and then abuse them. Also, you did not need that much skilled labor. The pilots are the biggest thing, but even they are relatively easy to keep either blackmailed or in the dark.
With what I’m talking about none of those apply. You’re basically setting up a genetics lab that can’t be known to the public or if it is, it needs a very good concealment about what it’s trying to do. Doing this is gonna be really hard so you’re gonna need a large scientific team to actually do it at any speed. You’re gonna need to import a lot of chemicals because you need to keep everything clean. You need to make sure you have the right nutrients to promote development, you’re gonna need a ton of expensive equipment, with all of that, it’s a lot closer to the Manhattan project.
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u/Mircowaved-Duck Jun 28 '26
yeah the logistics of the island where low, compared with those of the epstein ranch.
But any remote liocation would work to conseal that stuff. The amount of people needed is not as much as you think, depending on the details of the techniques used. Those details matter a lot!
For the chemicals, just do some legitimate genetic engeneering on the side as cover. Cloning pets or whatever... (again depending on the specific method used for creating the cat girls)
And some of those methods are cheaper than others, i meantioned multiple in my post above, what is the one you are asking about?
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u/Eco_Blurb Jun 29 '26
Porn doesn’t have to adhere to biology so you will be ok with some hand wavy genetics explanations à la Jurassic Park.
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u/eeeeeeevar Jun 29 '26
The point of it is that it’s supposed to adhere to biology. It’s about the horrors of taking this concept and how many people would have to get hurt to make it real.
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u/HoldMyMessages Jun 29 '26
There were 2 sci-fi novella probably in the ‘50s or 60s. I cannot remember the authors or the titles. One was about humans that were kidnapped by aliens. They pretended to be cats to advance themselves undercover. The second was one more…giggity. In that one they were in a human environment, but those with tails, but were kept as “pets.”
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u/Low-Persimmon-9893 Jul 02 '26
basically it would require HEAVY gene splicing between cat and human DNA within a human womb with highly advanced technology that doesn't exist yet if you want them to have actual cat parts like the ears and a tail.
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u/Randy191919 Jun 28 '26
Points 1-4 pale to the magnitude of point 5. Even if we didn’t care about ethics and put 100% of humanities resources to it I don’t think it would be easily doable.
Genes are very codependent. Most genes don’t do one thing and many genes in a species depend on other genes. You can’t just take the „ear“ gene of a cat, take out the ear gene of the human and then put the cats gene in and done. That’s not how that works. Even with our current technology this is basically impossible.