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The Centos Herd

"your last sperm sample was not viable. i need to test your sperm to verify your fertility. for you to become the quintessential adam of equus supremus you must be able to reproduce." i hear more metal bars sliding into place.

Breeding, Captivity, Cheirron, Feral, Horse, M/F, M/M, MtF, Musk, NC, Transformation, Transformation Story Archive

ONS Arc 3 Chapter 6: The Hunter

Even semen samples haven't been found."             "he covers his tracks well," said vinge.             "we've got another kind of tracker," said volcan, gesturing to buniq. "obsidian, have you met our newest member yet?"            

Dark, Female, Hurt/Comfort, Implied rape, Phoenix, Series Progression, Story Series, eastern dragon, naga

Kaleidoscope XIII - Friendly Fire

Ellie pulled up two different sperm sample records from iolvin, taken at two noted dates. "i think the nanites can change your sperm to become viable if you will them to do so. maybe if you're breeding someone in heat for example?

AI, Alien, Amputee, Anal, Android, Anger, Being watched, Bisexual, Character Development, Cheating, Creampie, Cum, Cumshot, Cyborg, Damage Control, Double-Penetration, Double-vaginal, Emotion, Emotional, Exhibitionism, Extrasolar, Fellatio, Female, Fight, First Aid, Fox, Gnome, Groping, Group, Hybrid, I/F, I/F/M, Incest, Inflation, Knot, M/F, M/F/M, Magic, Magical Procedure, Male, Master/Pet, Masturbation, Medical Procedures, Medicine, Oral, Orgy, Otter, Ownership, Pain, Panther, Pawing, Relationship, Relationship Development, Ritual, Rune Magic, Sci-Fa, Sci-Fi, Science, Species Development, Starship, Story Development, Straight, Tie, Vaginal, Vixen, Xenobiology, Zero-gravity, adultery, artificial intelligence, collision, cousin, crash, damage, infidelity, initiation, injury, intersex, mutual masturbation, recovery, repairs, spaceship, voyeur

The 94 Unfinished Works of Nameless Wolf - A Compendium

Phase lock doesn't work, have to take semen sample from zip's butt. explain that starfleet does not kill sentient life which is why they use phase lock.

Alien, Alligator, Anal, Bestiality, Bull Terrier, Bunny, Camping, Canine, Corgi, Cub, Cum, Dog, Fox, Gator, Horse, Incest, Internet Hookup, Locker Room, M/M, M/M/M, Male, Nudity, Oral, Otter, Prostitution, Rabbit, Raccoon, Rape, Science Fiction, Story Series, Underage, Vulcoon, Werewolf, Wolf, Zoophilia, blue heeler, coach, huge cock, janitor, sleepover

The Centos Herd

I feel real horny and notice that i can smell that same smell from the piece of cloth that debiron held over my nose when they were collecting their sperm sample. it seems to be coming from marc's direction.

Captivity, Equine, Forced, Forcedshifting, Minor Bondage, Real Life, Sci-Fi, Sex, Zoophilia

Chapter Twenty-Five: The Secrets We Hold

Short explanation, taking sperm samples and fertilizing an egg. in or out of the womb. no sex necessary. i already know some on just how many variations there are for preservation and stasis enchantments that could be infinitely refreshed, so any...ugh...

Celestia, Fighting, Future, Human, MLP, Magic, My Little Pony, Sad, Story Progression, Story Series, Twilight Sparkle, luna

How to Outfox Death

He felt another round of samples being taken as the pain of the muscle cores and bone scraping were mingled with the autoerotic harvesting of a sperm sample.

Anthropomorphic, Bear, Brother, Chakat, Character Development, Cub (clean), Death, Drama, Emotional, Fighting, Fox, Foxtaur, Gay Relationships, Innocence, Kitsune, Love, Mature, Morbid, Mother, Mustelid, Mythological Creature, No-Yiff, Nudity, Penis, Sci-Fi, Science Fiction, Series, Snuff, Taur, Violence (Not In Yiff), Wolftaur

Heated Week VII: Money troubles

"she wanted to collect sperm samples since she couldn't measure my sizes anymore. you know... too big and all that..." everyone looked at me.

Alligator, Autofelllatio, Avian, BDSM, Ball Growth, Bondage, Bulge, Cat, City, Cock Growth, Cock Vore, College, Cow, Creampie, Doctor, Donkey, Dragoness, Fellatio, Foreskin, Fox, Gazelle, H/M, Herm, Hermaphrodite, Heron, Hospital, Hyper, Hyperphallic, Lactation, Limo, Masturbation, Messy, Milk, Modern, Mouse, Musk, Night club, Orgy, Pre, Precum, Public, Sex, Sex workers, Size Difference, Story Progression, Straight, Stripper, Sweat, Tiger, Vaginal, Wolf, deepthroat, huge ass, nerd, sounding, teats, twink, udders

Bitch of Beasts (OLD)

Suel blushed and bit his lip, glancing back as the male mounted him and slid his aching erection up between those taut, furry cheeks, looking more and more like an impressionist painting done entirely with various sperm samples.

Abduction, Adult, Anal, Anthro, Anthropomorphic, Ass, Ass Worship, Ball Fondling, Balls, Bareback, Bear, Bestiality, Bisexual, Blowjob, Bondage, Bound, Bovine, Canine, Cave, Ceeb, Chubby, Cock, Cock Worship, Commission, Condom, Creampie, Cum, Deep Penetration, Deep Throat, Deep Thrust, Dick, Dinosaur, Doggystyle, Ejaculation, Erection, Explicit, Facesitting, Feline, Fellatio, Female, Feral, Fondling, Forced Sex, Forest, Fox, Fucking, Gangbang, Gay, Hard-On, Humping, Kidnapping, Kinky, Knot, Leash, Lust, Male, Messy, Molesting, Mythological Creature, Non-Anthro, Nude, Nudity, Oral, Orgasm, Orgy, Penis, Pheromones, Plump, Pre, Quadruped, Raccoon/Fox, Raptor, Reptile, Riding, Rimjob, Rimming, Rough, Rough Sex, Rule 34, Seed, Serpent, Sex, Sexy, Sheath, Short Story, Size Difference, Spooge, Story Series, Straight, Stretching, Suel, Tailhole, Tauren, Tie, Tied, Tiger, Vagina, Vaginal, Warcraft, Wolf, Wolfess, Wolvar, World of Warcraft, Zoophilia

Homesick

Unlike my case, they didn't seem too interested in collecting a semen sample from him. that seemed a little odd to me, but then this might have been a completely new animal.

Bestiality, Bull, Donkey, Feral, Goat, M/F, M/M, M/solo, Mostly Straight, Possession, Transformation

Submission of a Plainsman: Ch. 9

He stuck his muzzle down and sniffed at the rodent rump, a menagerie of smells from various semen samples, wet sweat, and strong mouse musk stimulated the aroused cougar. he growled and grunted and sniffed again, whiffing the odoriferous butt.

Abuse, Anal, Blood, Bondage, Cheetah, Cougar, Creampie, Cum, Cumming, Deep Penetration, Deep Thrust, Domination/Submission, Feline, Forced Sex, Gag, Gay, Heat, Lion, Lynx, M/M, Masturbation, Mating, Mild Violence, Molesting, Mouse, Musk, Non-Consensual, Orgasm Denial, Pain, Pheromones, Rimming, Rodent, Rough Sex, Spanking, Story Series, Sweat, Teasing, Tiger, Urine, Yiff, muzzle, sniffing

Tales From Apartment 232 - Part 14

They took semen samples from him and everything. they were going to send a car over to get fletcher, but mitchell is stalling them to see if we want to do anything ourselves..." he said softly. "what do we do."

Anal, Angst, Fox, M/M, Mild Erotica, Otter, Semi-Incest, Suicide, Various Species, Violence