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Kaiju Kingdom

Don't you just need needles and serum?" he asked, still eyeing the room anxiously. the hamster shook her head, donning a pair of spectacles as she prepped his dose.

Destruction, Giant, Growth, Macro, Merric, Merric Sands, Squirrel, Theme park, kaiju, rampage

Close Encounter

The serum was reaching full effect. the tiger was ready to begin.

Aliens, Belly, Birth, Expirmen, Kaydex, Labor, Male Birth, Male Pregnancy, Pregnancy, Rapid preg, Rapid pregnancy, Sci-Fi, Sex, Tiger, belly expansion, mpreg

Always Kennel Your Pets (5/7)

"surprised you didn't give yourself the feral serum."

Anal, Domination/Submission, Feral, Gay, Latex, Master/Pet, Oral, Rubber, Transformation

Dark Star - Hybrid Theory

As a society we drift towards the predictable, the mediocre, but this serum is anything but that.

Anal, Bull, Chimera, Fox, Gay, Hemipenis, Horse, Hybrid, Hyper, Medical proceedure, Multicock, Muscle Growth, Oral, Sci-Fi, Science Fiction, Shark, Transformation, W eight loss, Weight Gain, experiment, masculinization, mixture, nipple play, tf

Endagered No More

He had been altered mentally by the repeated use of the serums and his intelligence now rivaled a human's. he was tired of being a test monkey and decided to have some other fun.

EnSpContest 2010, Heat, Knot, M/M/F, Panda, Pheromones, Rhino, Tiger, Tigress, Transformation

Depraved Humiliation

And yet he couldn't seem to stop either, not after kate injected another overload of the serum into his system.

Bareback, Blackmail, Blowjob, Breeding, Cunnilingus, Depravity, Erotic, Exhibitionism, Extreme, F/F, Family, Female/Female, Feral, Forced, Forced Sex, Garter snake, Group, Group Sex, Human, Humiliation, Impregnation, Incest, Jaguar, M/F, Male/Female, Man, NC, Non-Anthro, Non-Consensual, Oral, Oral Sex, Public, Rape, Recording, Sapient, Short Story, Snake, Story, Twisted, Vaginal, Vaginal Sex, Voyeurism, Warning warning warning, animal, cruel, cruelty, erotica, exhibitionist, non-con, public sex, video, voyeur, warning, woman

Raptor#7: Roleplay, Rape and Impregnation.

A small vial she was using to drip a dollop into each sample with a transparent liquid in it and labeled “fertility serum#1198".

Bestiality, Drugs, Fellatio, Forced, Human, Impregnation, Male/Female, Musk, Rape, Raptor, Science, Short, Zoophilia

Concequences...(updated)

Before albert was to administer the serum in to the boy, a thought crossed his mind, "all of the simplest of serums killed in a few minutes, perhaps this one will kill me in moments."

Compassion, Concequences, Death, Dragon, Feral, Fox, Growth, Horror, Komodo Dragon, Manipulation, Monster, Muscle, Mutation, Therapy, Vixen, beasts, flashback, forgiveness, furry, gene, geneplicing, genetics, monstrocity, morph, murder, shots, super soilder, writters competition

His Majesty's Dragoness: Prologue

Once the process was complete, temeraire's form seemed to shimmer for a moment, as if reacting to the serum coursing through her.

Cum, Dragon, Dragoness, Female, Feral, His majesty's dragon, Human, Laurence, M/F, Male, Musk, Napoleon War, Sex, temeraire

Big Changes Part 1 (Updated)

The serum soaked into the cut and the transformation started almost immediately. his hand began to tingle as the skin became tough and scales began to form.

Cum, Cum Inflation, Cunnilingus, Dragon, Dragoness, Heat, Human, Impregnation, Knot, M/F, Magic, Missionary, Science, Tied, Transformation, Vaginal

Rabbit Heart Pt. 2 - Ch. 15

He'd been taking them as guinea pigs to test the serum's lethality. and clearly, it had been lethal.

Bull, Dog, Dragon, Experimentaion, Grimdark, Mutant, Rabbit, Teen, imprisonment

BOVINE PARENTS (Ch. 5)

I...this is it...i know it..._ \* \* \* sandra -- suddenly and involuntarily -- bent over backwards with a harsh crunch as the serum rearranged her skeleton.

Anthro, Anthropomorphic, Bovine, Cow, Family, Female, Hooves, Horns, Human, Hybrid, Mother, Muscle, Muscles, NSFW, Naked, Pain, Plot Development, Science, Series, Story, Story Progression, Story Series, Transformation