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Colony, September 1st 2011, 7:24 AM

When doctor jansen has asked him if he wanted to test one of her serums he hadn't expected it to have such a strange side effect.

Alien, Character Development, Egg Laying, Human, M/M, Male Pregnancy, Plot Development, Science, Story Progression, Transformation, Wolf, hair growth

Unintended Intruder - 03

That could explain the sudden need to fondle herself senseless... or maybe it was a side effect of the green stuff. maybe it did all kinds of good things for her but made her eat like a horse.

Ass-Grab, F/F, No-Yiff, Plot Development

The New Formula

It must be a side effect from the formula! the bunny stood up, lifting his paw holding the professor and awkwardly hopped to the lab table.

M/M, Micro, Paw, Penis, Rabbit, Shrinking, Uncontrollable, Weasel

Teacher is the Pet.

The transition had gone great for her, except for one little side effect. the main problem was that when she'd hid puberty, the hormones that she took had had some sort of unforeseen side effect with her equine genitals.

Age Difference, Futa, Futanari, Gagging, Hermaphrodite, M/Herm, Male, Master/Pet, N/C, Non-Consensual, Oral, Shemale, Size Difference, Teacher, Transgender, Transsexual, Virgin, throat fucking

Transformation Story: A New Police Dog

But i think you'd be more concerned about the side effects. i'm legally bound to read them to you. they are...oh, hang on, i had them somewhere."

Bondage, Drugs, Erection, Exhibitionism, Human, Humiliation, Husky, M/solo, Nudity, Personality shift, Transformation, injection

In The Beginning

Heightened libido was one of the unforeseen side effects, though with the quick delve into jane's private notes, he was now unsure as to which of the side-effects were really quite so unforeseen.

Anal, Anatomically Correct, Anthro, Anthropomorphic, Aroused, Ass Worship, Balls, Bareback, Blowjob, Bound, Canine, Cock Worship, Cum, Cum Bath, Deep Penetration, Deep Throat, Deep Thrust, Dick, Doberman, Dobermann, Doggystyle, Ejaculation, Erection, Fellatio, Forced, Fox, Hard-On, Intro, Introduction, Kissing, Licking, M/M, Mating, Mild Bondage, Mild NC, Modern, Muscle, Muscle Worship, Muscles, Oral, Orgasm, Passion, Pheromones, Rough, Science, Series, Spooge, Story Progression, Transformation

Dick's Pizza

Desperate for relief, she turns to a new drug known as heat blockers, but soon discovers that it only delays her heat and comes with dangerous side effects.

Bottomless, Explicit, F/solo, Fondling, Fucking, Heat, Heterosexual, Kangaroo, Kobold, M/F, Marsupial, Messy, Musk, Porn Flick, Riding, Risk of Discovery, Rough, Scalie, Series

Waking Up As A Test Subject

You're the first person who gets to try the perfect version of my little serum, here...meaning that there won't be any side effects for you to worry about later." _side effects?

Blowjob, Bondage, Cum, Cum Swallowing, Cumshot, Leather, M/M, Male, Oral, Oral Sex, Story, Swallowing, Throat Penetration, Transformation, straps, tf, throat fucking

The Time Travel

One day though sparky whitnessed the death of his master, in order to save his master he travells back in time, but not without side-effects.

Age Regression, Sci-Fi, Timetravel

Hidden in Blue

"mine isn't like most," said dan with his ears laid back in embarrassment, "a few of us have physical side effects but i'm the only one of them on earth so far.

Anthroprmorphic, Human, Magic, Minotaur, No-Yiff, Superheroes, Transformation, Wolf

[Commission] Growing Hunger

Supposedly the effects were just as the name implied: the tablets would allow the user to grow bigger everywhere, though came with side effects such as libido, increased animosity, weight gain, and more.

Adult Content, Aroused, Ass, BBW, Ball Fondling, Ball Growth, Balls, Bareback, Belly, Big Boobs, Big Tits, Blowjob, Boobs, Booty, Breast, Breast Growth, Breasts, Bulge, Busty, Butt, Cat, Catboy, Choking, Chubby, Claws, Cock, Cock Growth, Cock Worship, Consensual, Corruption, Cum, Cum Bath, Cum Inflation, Cumming, Cumshot, Deep Penetration, Deep Throat, Deep Thrust, Dick, Dog, Domination/Submission, Ejaculation, Erection, Explicit, Extreme, F/M, Fatfur, Fatty, Fear, Female, Forced, Forced Sex, Gag, Gagging, Gore, Growth, Humping, Hyper, Hyperphallic, Hypertrophia, Inflation, Jugs, MILF, Macro, Male, Messy, Murder, Musk, N/C, NC, Nipples, Non-Consensual, Oral, Penis, Pheromones, Plump, Plumper, Rough, Rough Sex, Semi Consensual, Semi NC, Sex, Snuff, Stretching, Weight Gain

Conception. Part 3.

As a side effect it was also exceptionally good at allowing chromosomally unmatched gamete cells to combine. in other words, it would allow humans and animals to interbreed.

Bestiality, Canine, Human, Hybrid, Incest, M/F, M/M, Pregnancy, Zoophilia