Eric woke like he did every day the past few weeks, being cuddled by a furry rat creature. It was wrapped around one of his arms, both hind legs and front paws grasping the length of his arm like a pole, and its tail curled around him. It was warm and soft, with an intense heat emanating from a series of puffy nipples and a slick hole.
The Rat slept like that most nights, grabbing on to some piece of Eric. It's intelligence was minimal, but it still was completely devoted to its human.
His phone buzzed and both he and the Rat stirred. Bleary he picked it up and with one eye closed against the brightness he opened a series of messages from the Rat's sister. Eric cracked a grin at them, and looked down at the Rat, dark eyes staring back at him.
"Think you might not be the only devolved human soon."
"Mmooahhr?" It retched, white teeth flashing, Eric felt a slimy patch forming where its sex was pressed against the back of Eric's forearm. He could also feel its sex, and many teats begin to swell and puff up.
"Yeah, your sister is hard at work turning people into creatures like you.". The Rat blinked a few times, processing with what little brainpower it had. "Sssistr... Moahr!?".
"Yeah, she's fairly devious, lot like you were. Before you turned yourself into a dumb sexy Rat.". The Rat bared it's teeth in an animalistic grin. It unfurled itself from Eric's arm and clambered awkwardly onto his naked chest, straddling it. Using its tail tip the Rat began to tease his cock, while thrusting its drooling sex forward, and running its clawed paws over the rows of puffy hanging black teats.
"Secksy... Rahht!", it belched proudly, saying its favourite words.
Eric grinned at the diminutive wretch, the smell and heat of eager rat pussy hitting him in the face. It always tried to be seductive, but only ever managed desperate. It was one of the things that really turned him on about it, seeing how decrepit the thing Lisa had become was.
That, and Rat pussy to him had become a real delicacy.
"Yeah. Like you. C'mere you sexy Rat!". He grabbed the Rat by its hindquartes and pulled forward, shoving its swollen Rat sex into his eager face, as it screeched in excitement.
---
"It's crazy what goes on behind closed doors eh!". Eric commented, running through the message trail from Kimi and her father. "The girl is seriously thirsty for him." He looked up to watch Kimi chat to her friends at another table. A baggy jumper hid her recent growths, and with it she was a picture of exuberance, extroversion, and young innocence. While at home she was completely sexually submissive, and a sex slave, to her own father.
Sarah let out a bark of laughter, "can't be any crazier than what's happening in your or my home!?". She remarked.
Eric waggled a finger with a grin, handing the phone back, "okay, point taken...
...any thoughts on what's next?" He ventured, watching Sarah pause a moment, and suck her bottom cheek.
"Don't think we need to do anything yet... With Kimi so eager to be a slave, Amber fully aware and okay with what's happening, and the twins completely obsessed with each other, I'm happy to just let things play out for a bit."
Eric shrugged, "yeah, okay, that seems fair. Won't be long before the others figure out what's happening to them."
"Ah yeah, it'll be fairly hot! Can't wait to see who embraces it willingly!" Sarah grinned. "She's definitely a ringer for doing something reckless!" She said pointing at Amber, who'd just entered the canteen with a tray. Her mousey blond hair was down again, cascading past her ears.
---
Something reckless turned out to be another video diary that Sarah was eager to share with Eric.
There was too parts to it, the first was Amber again sitting crosslegged on the bed. First talking about how much she loved her horse, how gentle he was, how handsome he was. Then it veered into how no one would understand how she felt, that her parents wouldn't "get it", and that they'd somehow stop their love if they found out.
"What happens when they find out what's happening to me, and stop it? I...
... I don't want it to stop. I think..." She pouted. With that she raised a finger and pushed her curtain of hair back over her ear. It was pointed and elf like, and twitched when she touched it.
"I can't stop thinking what it's going to feel like when we make love." She wrapped her arms around herself, eyes closed and smiling. "I keep wondering what it'll feel like with him in me." Eyes cracking open she grinned at the camera
"Sooo... I think I've figured it out. It's his semen that makes me change. Whenever I play with it, it changes me. He's given me these cool ears!". She pushed hair back revealing both of them at once. The she reached down, pulling up her top, revealing the crotch tits, now tipped with jet black nipples. "I've got these babies." Then pulled forward a foot, waggling toes at the camera, toes with black nails. "And these! Aren't they cool!?".
She then pulled her foot back, blushing. "I wonder if this has ever happened to someone before... I wish I could talk to someone about it. See if I'm crazy for wanting to..." She paused. Biting her lip. "... For wanting to be with him, with my whole body."
"I uh.. found some stories online like what's happening". She blushes more scarlet. "I like them." She wrapped her arms around herself. Then she had a look of realization. "I could talk to people online about it maybe!". And with a delighted squeak she turned off the video.
Sarah was pretty sure that any online conversation would tend towards pushing anyone to do the wrong thing, but she wanted to make sure. So she waited to see where Amber went, then made an account for the same horse-grooming message board and joined in the conversation.
In it, everyone openly spoke about how they groomed their horses for sex, both male and female. As soon as she saw the content, Sarah was sure she wouldn't need to do much herself, yet she lurked anyway. Watching as a new thread appeared. 'Help, I'm turning into a mare'.
The thread did not last long. Neither was the next attempt, 'Transforming, what do I do?'.
Only her third attempt, 'preparing my body for sex' gained any traction. In it, Amber posted about her horse, that she loved fooling around with him, and how hot it made her feel, and that she felt like she wanted to take things further but was conflicted with societal and familial expectations. Others responded with encouragement and words of support, that her feelings were her feelings and she shouldn't feel shame.
Amber broached the topic of her body reacting differently to her stallion now, and that she felt changes happening in her. One poster jokingly called it "heat", most others just said she was obviously just horny as hell and reacting to that.
Sarah interjected here and posted a probing, "Changing how? Like your body is getting ready for him?".
That opened the floodgates from Amber, who, in the relative anonymity of online spilled her guts about her changing body. Baring her soul about how vulnerable she felt that she felt like she was at a crossroads and didn't know what to do.
Some people were then dismissive, some confused, but Sarah kept a line open offering, "People turning into horses is a tall order to believe, even for us here. You have to admit it's hard to believe without offering us any proof.".
Sarah was delighted when a closeup of Ambers ears, and her panty clad crotch with new tits were posted shortly after. Initial reactions were again sceptical, blaming AI for the image.
Again, Sarah offered a solution, telling Amber that a way to prove it real was to post a video, in which she did a very specific set of actions. Something AI generators were completely incapable of.
What followed was a short video of Ambers lower half, with her making several specifically requested gestures and motions.
The thread exploded then, some people requesting more, others asking what surgery she'd gotten, more asking if it was drugs or gene therapy. She sheepishly clarified that it was when they played around that she'd started changing.
Regardless of the questioning one thing was clear, most people were very jealous of her changes, with most offering versions of.
"If this is real, and that was me, I'd be drinking his cum till I was neighing"
Ambers responses to all of these messages turned from conflicted, to grateful for being able to talk openly, then surprised at how consistently everyone supported her wanting more, to finally giddy and excited at how into this everyone else was.
The thread went on for another half hour, before Amber finally signed off with a, "Thanks so much everyone, you've been so helpful. Don't know how I'm gonna hide this from my family, but I'll cross that bridge later. Gonna log off now, think I have some catching up to do with my stud tomorrow ;) chat soon!".