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The AdvAnTAGE Project: Selective Breeding 3 [ER]

By Mantrid Brizon

(03/12/2021)

Hearing the moans and the groans, the dainty, five-foot-nothing mouse girl creeps almost silently down the hall. Opening the door as quietly as she can, she peers into the room with her big, amber eyes. They grow wide at the wonderful scene before her.

"Oohhh... Mmmm... Ahh!"

The silver furred mare coos and then jumps, giggling as she looks down upon her human lover, who's just suddenly and forcefully rammed his girthy manhood into her. The busty, silver furred, six-foot-four horse woman leans forward and plants a passionate kiss on her lover's lips, her hands stroking his thick, black hair. With their lips locked and tongues wrestling, swirling around and fighting the other for dominance, they stare into each other's eyes with matching, deep blue eyes.

With her massive breasts, so full and perky, smooshing into the human's chest, the mare rocks and swivels her hips. Plop. Plop. Plop. His thighs and scrotum smack gently against her body, his balls patting her buttocks as if to complement her for her excellent work. The white furred mouse girl bites her bottom lip and feels the heat from her loins. As she grows moist, she feels the urge to do what the mare is doing. Why must she be put into such a horrible predicament?!

Unable to control herself, the mouse leans against the door frame and peeks at the lovers, a hand slithering down her slender, naked body before coming to rest just over her groin. A finger gently teases her clitoris, her pink, fleshy tail swaying as she stands alone in the hallway. It's all she can do to keep from crying out and alerting the lovers, as the diminutive mouse girl masturbates, fervently rubbing her pussy in the hallway.

"Mmmff! Mmmff! Ahh! Ahh!" The mare cries out, straightening her back and sitting upright.

"Ohh, that's right, baby. Ride it, Vee! Rrrr-yeah! Get it, baby!" Her lover growls.

Plop! Plop! Plop! Plop! Harder and faster, the mare rides her lover. She reaches out her hands, allowing them to flail about. Though her lover has spent the last few minutes massaging and kneading her exceptional breasts, he soon takes his hands away from her gargantuan mounds, opting instead to weave his fingers between hers. She looks down and smiles so warmly, eager to please her man. It's quite a passionate moment as she sits atop his lap, grinding her womanhood against his pendulous flesh, which buries itself so deeply into her once virginal loins.

He feels every ridge, every gentle bump and curve within her taut vagina, while the mare's love tunnel squeezes his manhood as if it were trying to snap it off. Rocking and grinding her hips, she feels the thick rim of the bulbous head of his penis, the long and thick, throbbing shaft that extends so deeply inside of her. Her sapphire eyes roll back in her head, the pleasure overwhelming. Harder and faster, she rocks her hips, using her stretched vaginal canal to massage every millimeter of her lover's pulsating phallus.

"Rrrr-fuck! Oh, shit, baby! You're gonna make me cum!" He exclaims.

"Ahh! Ahh! Mmhhmm!"

She doesn't stop, and neither does the watcher, who so eagerly rubs her dripping wet pussy. As their pleasure builds, the six-foot-four mare bucks against her lover, who is quite a bit shorter than her. His testicles bounce and shake as she rams herself down with considerable force, rocking and bucking and swiveling and bouncing.

"Oooohhhh-fuck! Nnnnn-shit! I'm! ... Oh, god! Nnnn... HHHNNNNNN!!!" He winces.

"AAAHHHH!!!!" The mare exclaims.

"Mmmm..." The mouse girl bites her bottom lip and winces, shivering through her own orgasm.

Sitting atop her lover's endowment, the mare squeezes his hands and pulls her arms back, bringing their hands to her breasts. She presses his hands into her large mammaries, which jiggle as she throws her head back and arches her back, feeling his copious flow. Jet after powerful jet blasts into her loins, careening through her quivering cervix and filling her uterus to overflowing. Her eyes roll back as the mare endures one more body-rocking orgasm, the third since they've begun their carnal session.

With his blue eyes closed tightly, the pale, black-haired human presses his hands firmly into her big tits, his fingers still woven around hers as she holds onto him for dear life. She jolts as the pleasure cascades over her, her powerful muscles shaking the king-sized bed. Her ankles shift and her hooves brush his calves, her long, slender but toned legs giving him a firm squeeze. Opening his eyes, he gazes up at his lover, who has ceased to appear so strange to him.

When they first met, it was often unnerving to look up at the silver furred mare, who towers nearly a foot taller than him. Her obvious affection was also discomforting, as he felt so vulnerable and so filthy. She appears humanoid, but, somehow, she always felt like little more than a beast. However, over the days, as they grew closer, she revealed herself to him, both physically and emotionally. So attentive to his needs, the mare makes the human feel like quite the stallion, even though she's often the one who's in charge.

Leaning forward, the mare releases his hands and plants them on the bed, on either side of his head. Curling her body into a half-moon, she kisses him so lovingly, slipping him her tongue. Slowly sliding off of him, his manhood, still quite firm, flops onto his belly with a wet slap. She giggles and strokes his flesh with her fingertips, only to lean forward and sniff the sweet aroma of their passion. Her fur, damp and musky from her own sweat, fills the room with a potent odor that the human finds strangely arousing.

Strong and yet decidedly feminine, it's pheromone-like qualities make it easy for him to adapt to the strangeness of the situation. The mare's ears flick as she hears a noise, lifting her head and looking directly at the doorway. Seeing this, her lover lifts his head and glances to his left. The mouse couldn't help herself; having let out a whimper, her heart sinks as the pair stare directly at her. To her and the human's shock, however, the mare waves her into the room.

Pushing the door open, the dainty mouse girl walks almost silently on her paw-like feet. Even the floorboards hardly creak as the slender woman with the modest bust makes her way across the floor. Standing at the edge of the bed, a hand reaching across her chest and grabbing nervously onto an arm, she waits for further instructions. The tall, busty, silver furred mare turns her sapphire eyes toward the black-haired human, who smiles rather innocently at her.

Amused by this, the mare nods her head and then turns toward the mouse. Repeatedly curling a finger, she lures the mouse onto the bed. She crawls on her hands and knees, unsure of what to make of the situation. As she rises up, the mare glares and reaches out her right hand, grabbing onto the mouse girl's braid.

"Eee!" She shrieks.

The human begins to sit up, a worried look on his face. The mare turns toward him and shakes her head. He grimaces as he lies back down and watches. Suddenly, the mare pushes the mouse girl down, shoving her snout into the human's slimy cock and balls. He jumps, while the mouse girl plants her hands atop the damp mattress.

"Ooohhh..." The mouse coos, her cheeks flushing beneath her fur.

This isn't the first time she's done this to her, as the mare often makes the mouse girl clean his cock after she's used him. The mare seems to enjoy reminding her that his manhood doesn't belong to her. This time, however, is the first time she's done it after catching the mouse girl watching them. With an almost sadistic glee, the mare makes the mouse turn her head, nuzzling the human's half-flaccid penis. Feeling her temperature rising, the mouse girl opens her jaw and coos, rubbing her nose against his shaft.

Unable to resist, she rests her clawed hands on his body and sticks out her tongue. She licks him, tasting the flavor of someone else's carnal pleasure. Using the mouse's tongue like a damp sponge, the mare directs her movements, her hand squeezing tightly to the mouse's braid. The dainty, white furred mouse follows the mare's instructions and licks all over his manhood, even nuzzling his balls and licking his scrotum clean. The taste of their passion, the remnants of the human's cum and the mare's pussy juice, is so enticing to the mouse.

With her clawed hands planted firmly on his toned belly, she uses two fingers to lift his rapidly stiffening cock and stuffs it into her mouth. Up and down, the mouse girl bobs her head, all under the direction of the mare. Soon, the human's manhood grows to its full size, standing almost eight inches long, and considerably thick. The mare flashes a sinister grin, leaning over and watching closely as she flexes her bicep and forces the mouse to suck the human's big cock. She gives her head a firm push, trying to make the mouse choke on his manhood, but the little mouse surprises the mare and her lover; her chin is buried in his scrotum and she doesn't so much as gag.

Throughout this unusual scenario, the mouse swirls her tongue around his member, massaging his organ like a pro. With the human's pleasure building, the mare has finally had enough. It's not the mouse girl's place to pleasure her mate. As the mouse takes her mouth off of the human's rock-hard penis, the mare, who still holds tightly to her braid, turns the mouse girl's head as if she were a toy. With a softened, almost frightened brow, the mouse looks upon the glaring mare, her mouth agape as she pants for air, saliva running down her chin.

The mare points a finger at the human and then at herself. It's clear what she means. The human belongs to her, and the mouse is not to indulge in pleasure that rightfully belongs to the mare. With that, the mare releases her braid and waves a hand, instructing the mouse to move back. She obeys, and sits at the corner of the bed as the mare once again throws a leg over the human and begins to ride him. The cum he'd already filled her with slowly oozes from her pussy as she bounces up and down, and the mare seems to take delight in leaning forward and showing off.

She moves slower and more methodically, making certain that the mouse girl watches how the human's endowed penis stretches out the mare's tight pussy. The mouse girl bows her head and watches, a rather pitiful look on her face. It bothers the human, who is soon forced to hide his face in the mare's large breasts, all under her direction. Once they finish a second session, the mare allows the mouse to taste him once again, though this time the mare also joins her. They each take a side of his manhood, running their lips and tongues along his flesh as they clean him.

After it's all over, the mare glares at the mouse and shoos her out of the room, then pulls in the human and cuddles him like a teddy bear, a wide smile on her face. She pays no attention to the mouse girl, who watches from the hallway for a moment, seething with jealousy. The mare is only concerned with her lover, and his potent seed, which races to fertilize her eggs and claim her womb. The mouse girl pouts as she shuffles her paw-like feet, returning to her room to sleep alone. There must be something she can do to get what she wants!

Awakening the next morning, the mouse gathers food from the basement, under the silent direction of the mare. Not only has the six-foot-four woman taken control of the only man in the house, but she's dominated the five-foot-nothing mouse girl, who is also more than one-hundred pounds lighter than her. Without the size or strength to resist, she has little choice but to accept her position as the lowest of the group, carrying out all of the menial chores. Gathering a series of cans, however, she suddenly has a thought.

The mouse looks around the room, toward the stairs and the doorway. Leading into the kitchen, where the human and his mare wait for her, a sinister thought pops into her head. Pulling the cans close to her body as she smiles from cheek to cheek, she feels the coldness of the metal reaching beyond her fur. With her mind made up, the mouse girl happily bounds up the stairs, her modest, B-cup breasts bouncing and jiggling. She enters the kitchen, where the human and the mare AdvAnimal wait.

Seated at their chairs, the pair wear no clothes, and neither does the mouse. They roam about their home as naked as the day they were born. This, however, has often been a problem, as the mouse girl struggles to keep her eyes from staring at the human's manhood, which the mare was quick to claim and is extremely protective of. Seeing her amber eyes gliding down, the mare narrows her sapphire orbs and clears her throat. Shaking her head and snapping out of it, the mouse turns toward the stove, which the mare pantomimes toward.

Like a good girl, the mouse prepares their breakfast. She spends the rest of the day as they do all the days before, watching the mare cuddling with the human and displaying her affection. It's a struggle to keep from snarling as her anger grows. When she's tasked with cooking dinner, she doesn't hesitate. It's better not to play her hand, and she does a wonderful job of acting demure. As the night falls, they retire to their bedrooms, but the mouse has work to do. She creeps down the hall, just as she hears the mare growing aroused.

She coos and hums as she examines her human lover. The mouse has spied on them enough times to know what's happening. First, the mare will examine his manhood, then play with him, skillfully using her hands. Once his masculine organ begins to stiffen, she will lick his flesh and masturbate, preparing them both for the glorious act that the mouse has yet to experience. The whole process is relatively quick. Making her way into the basement, the mouse looks around the room. She finds what she's looking for and flashes a sinister grin.

There's no time to waste, as the mare won't take long before she's straddling his lap; the mouse would prefer it if the human's manhood wasn't already tainted by the mare's wet pussy when she reaches him. As her head bobs up and down, her long, white hair flows over his legs and belly.

"Slrrp-slrrp-slrrp! Ahh!" She gasps taking her mouth off of his manhood. "Mmmm..." She coos, narrowing her eyes as she gently moves her hand up and down, stroking his big cock.

"Looks like you're all ready."

"Mmhhmm."

"Well? Climb up here! You know how he doesn't like being cold." Her lover teases, winking at her.

"Hehe!"

Crash! The mare bolts upright and the human begins to sit up.

"The hell was that?!"

He's about to rise to his feet, but the mare stops him. She's certain she knows what's going on, and it's time she put that little mouse in her place. They nearly fought over him when they first met, but realizing that she couldn't win, the mouse girl backed down and submitted to the mare's will. Perhaps a bit of violence will finally settle the score? Sliding off of the bed, the mare's hooves clop loudly as she makes her way toward the door. She turns back and points at her human, then turns her finger down, instructing him to stay there.

"Alright. Hurry back." He says, slowly stroking his own manhood to maintain his erection.

Making her way through the hall, down the stairs and toward the kitchen, the mare can hear a series of strange noises coming from the basement. What's making that beeping sound? Seeing the door to the basement cracked open, she peeks inside. The lights are off. She flips the switch and walks down the stairs, moving cautiously. The broom closet door slowly and silently opens and a dainty, white hand emerges. Reaching the bottom step, the mare looks around. Finding the source of the sound, a large, white machine flashes a green light and beeps.

She approaches the appliance and rests her hands on her broad hips, looking down at the device and examining it. Why is the washing machine prepped for use? They don't wear clothes! Perhaps it was the heavy bucket that fell from the shelf above, which she finds lying on the tile floor and rolling slowly across the room. Or perhaps it's something else... Looking around the empty basement, the mare narrows her sapphire eyes, looking for the true source. She knows the scheming little mouse must be responsible. Suddenly, the lightbulb explodes.

"Eee!"

Having pulled the string which she'd tied around the hanging lightbulb, the mouse allowed the only source of light to swing like a pendulum and smack against a support beam. She swiftly slams the basement door shut, turning the key and locking it, before using a spare piece of wood she'd found in the basement that morning and jamming it beneath the doorknob. As if that wasn't enough, she shoves the wooden dinner table against the door, grunting as she exerts herself.

The mare stumbles around in the dark, knocking things over as she looks for a new light source or way out. Unable to admire her handiwork, the mouse girl darts away, running almost silently on her paw-like feet. She closes another door in the hallway and locks it, before wedging a second board beneath the knob. By now, the mare has found the stairs and begins to climb. She reaches the top just as the mouse girl makes her way to the second floor. Jiggling the doorknob, the mare growls in furious anger as her rival makes her way to the human's bedroom.

"What took you so-Oh!" The human sits up in bed. "Hey, there."

Closing and locking the bedroom door behind her, the mouse girl flashes an innocent little grin before turning her head and looking toward a table to her left. Holding up a finger to him, he furls his brow in confusion as she suddenly drags the heavy table toward the door. The mouse girl sighs and pats her hands, brushing the dust from them as she looks at the thoroughly barricaded door. With the silence enveloping them, the mouse turns around and gazes upon the human, the object of her affection.

"Where'd she go?" He finally asks.

"Hm?" The mouse innocently cocks her head.

Throwing his legs over the edge of the bed, he begins to slide off, only to pause. Bang, bang, bang. He hears the soft thumps of the mare's fist against the basement door. Relieved that she's alright, and somewhat amused by the mouse's trickery, he cracks a little smile and chuckles. The mouse makes her way across the room, one hand caressing her form while the other fondles one of her modest breasts. He sees her lustful gaze as she looks him over. She stares at his manhood, which is still nearly fully erect, though the distractions have taken their toll.

Placing her hands on his thighs, she slides them toward his knees and looks at him so innocently, slowly lowering herself down. Kneeling on the floor, she places her head between his legs, and then looks up at him. The submissive mouse girl waits for his instruction. She smiles as he nods his head; the human allows it. He watches as she sniffs his manhood, which only faintly smells of the mare's saliva. Luckily for her, she worked fast enough; the mare's pussy didn't have the pleasure of enveloping his member tonight. She sticks out her tongue and gives the bulbous head of his penis a little lick, only to open wide and abruptly stuff it in.

"Ooohhh... That's a good girl..." He rests a hand atop her head, softly petting her. "I wondered when you were going to get a turn."

"Slrrp-slrrp-slrrp-slrrp! Mmmmm!" She moans into his manhood as she bobs her head back and forth.

It isn't long before he responds to her ministrations, his masculine organ swelling for her. It fills her mouth, reaching through her snout and toward the back of her throat, and yet she never chokes or gags on the rock-hard organ. Back and forth, she bobs her head, and though she'd love to enjoy him more thoroughly, the mouse knows better. In the back of her mind, she realizes that it's only a matter of time before the incredibly strong mare breaks through all three barriers. Who knows just how much time she has?

With his manhood full, throbbing and covered in her saliva, the mouse takes him from her mouth and rises to her feet. She cannot help but smile as he sits at the edge of the bed, wrapping his arms around her lithe body and nuzzling her much smaller breasts. She'd always felt self-conscious over her lack of endowment when compared to the mare, but her lover doesn't seem to care. He kisses her feminine orbs and licks her little, pink nipples, swirling his tongue around the areolas as fervently as he does for the mare.

It's both sweet and arousing. Though she grins from cheek to cheek and nibbles on her bottom lip, the banging of the mare's fist against the basement door, which is much louder to her ears, is a constant reminder. She gently taps him on the shoulder.

"Hmm? Oh, right. After you!" He chirps, waving a hand over the bed.

With her body trembling from nervousness as much as from her excitement, the mouse girl climbs up and onto the bed. She jolts as he gives her perky little butt a smack.

"Eee! Hehe."

She flops down onto her side and rolls over, her feet facing the barricaded bedroom door as her lover crawls up and onto the king-sized bed. He takes a moment to kiss her belly, moving toward her groin. Though she greatly desires this, she knows their time might be quite short. She taps him on the shoulder, hoping he'll ignore the sweet smell of her virgin pussy, but instead he ignores her tapping.

He kisses her pelvis as he spreads her legs, then slips his hands beneath her thighs and lifts them up. The mouse girl flushes as her lover rests her slender legs over his shoulders, his face so close to her womanhood that she can feel his hot breath. He leans even closer and sniffs her flesh, making her flush so deeply that she wonders if it'll be noticeable through her snow-white fur. With a gentle lick, her tastes her nether lips, which are already dripping wet.

"Ahh!" She gasps and winces.

She's never felt this before.

"Oh! Someone's ready!" He smiles up at her.

"Mhm..." She sheepishly nods.

With a finger lovingly teasing her loins, her licks her clitoris and spreads her nether lips with the tip of his tongue. She's rocked by pleasure as she feels him attending to her womanhood as fervently as she would tend to his manhood. It's an intoxicating feeling, to be so thoroughly pleasured by your lover. Again, she reaches down and taps him. For as good as this is, there would be no point if she can't have all of him before the mare escapes from her makeshift prison.

Rising up, the human's shoulders lift her furry legs straight into the air, which he then grabs hold of. His hands slide down her legs and toward her hips, and with his strong arms lifting her gently off of the bed, the human grinds the underside of his saliva-drenched penis against her dripping wet nether lips.

"Mmm!" She winces and bites her bottom lip.

"Just you wait, baby..." He coos, swaying his hips and grinding his endowment against her loins. "This might hurt at first, but once you get used to it, you're going to love it."

She opens her eyes and turns her head down, looking him in the eyes. With a little nod, she gives him all the confirmation he needs. With her paw-like feet in the air, right beside his head, and her legs running against his body, the human lifts up the barely one-hundred-pound mouse girl and pulls back. He tightens his pelvic muscles and takes aim, needing to hold her quite high off of the bed as he prepares to penetrate her. Pushing the swollen head of his penis into her nether lips, she winces and whimpers, only to gasp as he pushes it in.

"Nnnnnn-AAHHH!!!" She cries out, her eyes wide and watering.

"RRRRR-FUCK!" He growls.

Her vagina makes interesting sounds, audibly popping and then sounding like the licking of lips as he penetrates her flesh. She trembles and her head tilts back, pressing into the mattress as her clawed hands grip tightly to the sheets. Her snout points toward the wall across from him, her spindly arms shake and her wrists twist, squeezing the sheets in her dainty hands as she feels the initial pain of surrender. Is it because of his size or is this how it would've been for any man? Pushing deeper and deeper into her loins, he looks down and sees the trickle of red.

"Mmmm-that's it... What a good girl. Look who just became a woman!" He teases her.

"Nnnn-mmmmnnnn..." She whimpers and squeezes the bedsheets.

"Rrrr-fuck! Damn, that pussy is so tight!"

She lifts her head and turns her eyes down, looking upon the wonderful sight of his long and girthy manhood spearing her womanly flesh. In her humble opinion, he looks so much better inside of her pussy than the mare's. A proud smile spreads across her face, and her lover leans forward. Realizing her limits, however, he takes his hands away from her hips, supporting her on his thighs as he gently spreads her legs apart. As her legs stretch out in a much more comfortable manner, she bends her knees and curls her toes, groaning as he pushes even more of his manhood into her.

Just as he'd said, the pain melts away, and around the time that he straightens his own legs, looming over her on his forearms and knees, she feels nothing but an intoxicating pleasure. Her clawed hands rest on his sides as he begins to work her pussy, rocking and swaying his hips and giving her long, slow and consistent thrusts. With every stroke of his throbbing cock, he feels every ridge and bump inside of her love tunnel.

The mouse girl moans and groans louder, her vaginal canal thoroughly stretched by his fat cock, which also reaches into the depths of her body. Glancing down, the dainty woman can swear she sees the bulge of his penis beneath her belly, reaching nearly to her bellybutton as he rams himself home.

"Ahh-ahh-nngf-mmff-ahh!" She cries out, again and again.

Her claws rake his back as he pounds her tender flesh, pummeling her little pussy with faster and firmer strokes. Plop, plop, plop, plop. His balls smack her tight butt, her fleshy tail flailing about as if it had a mind of its own. The human turns his hands over, placing his palms on her furry shoulder blades as he reams her pussy with his big cock. The heat radiates between them, and as his muscles grow warm from his exertion, a familiar musk filling the room.

The mouse girl's own sweat makes her soft, snow-white fur grow damp and musky, but the odor is decidedly feminine, almost sweet. It draws him in like a siren's song, and the human can only work harder. He pounds her raw flesh, grunting and growling as he slithers his hands closer to her shoulders. Soon, he latches on, curling his fingers around her shoulders and holding her in place. Adjusting his position slightly, he kisses her so passionately before really plowing her virginal field.

"RRR-RRR-RRR-RRR!" He growls.

"AHH-AHH-AHH-AHH!" She squeals.

Plop! Plop! Plop! Plop! Faster and harder, he fucks the little mouse girl as though his life depended on it. Within moments, he's rewarded by a most adorable and ego-boosting sensation. Wriggling with pleasure, she screams nearly at the top of her lungs, her vagina clamping down onto his endowed manhood as she orgasms. Her pussy showers him with a clear fluid, splashing his cock and balls, and tainting the bedsheets.

"Aww! Nngf-nngf. That's so, nngf, fucking cute, nngf-nngf!" He remarks, looking down at her.

With her brow softened and body spasming uncontrollably, she feebly grips onto his back. The pleasure is incredible. She had no idea that sex was so indescribably wonderful! No wonder the mare was so quick to claim him for herself and keep them apart.

"Ahh-ahh-ahh-mmmm-ahh!" She squeals, her hands caressing her lover, her legs wrapping around his waist.

Forcing her shoulder against the door, the mare struggles to break through the barricade. She has almost no footing at the top of the stairs, but as strong as she is, it was only a matter of time. With a final slam, she breaks the door frame and snaps the board in half, forcing it open. She grunts as she pushes the door open, sliding the heavy, wooden dinner table along the floor. Stumbling out from the darkness of the basement, she blinks and rubs her eyes, which adjust to the dim light.

"Ahh-ahh-ahh-ahh!" She can hear the mouse girl squealing.

The mare snarls. She must move quickly. So long as he doesn't cum in her, seeding the mouse girl's fertile body, there's still hope for her to maintain her authority. Storming through the house, the mare finds a door and tries to open it, walking into the locked barrier.

"Ahh-ahh-hah-mmff-ahh!" The mouse cries out.

"Rrr-rrr-nngf! Oh, fuck!" The human exclaims.

Without hesitation, the mare takes a step back, lifts a hoof and kicks the door, breaking the frame and snapping the board in two. The door flies open and the shattered board tumbles down the hall. She runs toward the staircase, racing up the stares as fast as her hooves can take her. Sprinting down the hall, she reaches his bedroom door. She grips the knob and turns, unsurprised that it's locked.

"Oh, shit! I'm gonna... I'm gonna! RRR!"

With her sapphire eyes wide, she doesn't bother to waste any time. She gives the door a kick, and though the frame cracks, something sits in front of the barrier, keeping it shut. She slams her shoulder into the door, frantic to get in. Bang! Bang! Bang! His thrusts have slowed considerably as he winces, his hands now planted firmly onto the mattress and beside the mouse girl's hips as he arches his back and lifts himself up. Plop! ... Plop! ... Plop! ... Plop!

"NNGH... NNGH. NNNNNHHHRRRRR-FUCK!!!" He roars.

"AAAHHHHH!!!"

Feeling his torrential flow, the mouse girl's amber eyes widen. She shrieks and winces as she cums again, squeezing tightly to his biceps as she's thrown over the precipice by the powerful jets of hot, gooey semen, which flow into her taut body. The magma-like substance, so thick and hot, like liquid fire, pours over and then through her cervix, filling up her uterus in spurts which match his expulsions and rock her entire body with untold pleasure. So great is her ecstasy that she nearly falls unconscious from it.

"Oh, god, baby! Hhff-hhff... You're really milking it!" He pants for air.

Finally breaking into the room, the mare finds herself staring at a horrifying sight. Her mate is atop the bed, on his hands and knees and looming over the dainty mouse girl, whose paw-like feet slowly sway in the air, responding to his motions; he shivers and gently thrusts himself into her, purely a reflex, as he's overcome by his orgasm. With her ankles crossed, just beneath his buttocks, she gives him a squeeze, draining every last drop of her mate's cum into her hungry, little pussy.

Her hooves clop on the hardwood floor as she slowly approaches. There's no point in running, when it's clear that she's lost. She looks almost sheepishly at the lovers as she leans over, examining his face to see how much pleasure he displays. Her softened brow and pitiful expression actually tugs at the mouse girl's heartstrings, and her proud smile fades. With a pleasured moan, he finally pulls out and flops backward, sitting on a leg and supporting himself with a hand as his endowed manhood hangs to one side.

The mare gazes at their flesh, seeing the remnants of his climax all over his phallus and coating the walls of the mouse girl's stretched vagina. He looks to her and nods his head, turning his eyes down. She knows what he demands, as she demanded it of the mouse several times before. Begrudgingly, the mare kneels down and opens wide, ready to clean the remaining cum and pussy juice from her mate's penis. She cannot help but glare at the mouse girl, who sits up and flashes a nervous smile. The human's cum is so deep that a faint gob only now begins to seep out of her pussy as the mare slurps on his big cock.

"Ooohhh-yeah... Looks like she finally got some, baby." He coos, running his fingers through the mare's long, white hair. "Does that mean you two are going to keep fighting?"

Looking up at her lover, the mare takes her mouth off of his penis. As she strokes his stiffening flesh, she reluctantly shakes her head 'no'.

"Good. I'd rather have you both, anyway." He coos, stroking her cheek so softly.

The mouse girl grins, finally gaining a level of status in the odd family. Once again growing erect, it's finally the mare's turn. No longer in charge, she follows his instructions and climbs up and onto the bed. Lying flat on her belly and hugging a pillow, she spreads her legs as her human takes his rightful place.

"Nngh!" She winces as he rams his cock home.

With a pleasured groan, he slowly begins his work, pounding the mare's tight pussy as the mouse stretches out, lying on her side and watching. She rests a clawed hand on her belly, gently patting it with her fingertips as the mare turns her sapphire eyes toward her and stares. Shifting her gaze, the mare looks into the mouse girl's amber eyes, her expression that of acceptance. The mouse smiles sweetly and nods her head and the mare nods back, her hair already swaying from the force of her lover's thrusts.

"Rrrr-fuck! That's it... Nngf! Just you, nngf, me, nngf, and her. Nngf-nngf! One house. Nngf! One family. Nngf! One bed. Nngf! Deal?"

The mouse and the mare both nod in response, accepting his demands. With his ego thoroughly boosted, he leans forward and slides his hands around, grasping onto her full and mountainous feminine orbs.

"Rrr-rrr-rrr... That's right. Nngf-nngf! Take it, baby! Rrr-take it all, nngf, like a good girl!" He growls.

"Mmmm-mmmm-mmmAAHHH!" She finally squeals.

Giving in to his demands, she succumbs to the will of her mate, who no longer follows her lead, but now leads her. Just as he'd taken the mouse girl, he takes her, using the mare's loins for his own pleasure. Her long legs tremble as she opens her eyes, watching the mouse girl, who smiles at her and observes the carnal act unfolding, gently rubbing her clitoris with her fingertips.

"Interesting. Once Pvt. Palmer expelled his semen inside of Subject-8925, her rival ceased to be so aggressive!" Dr. Briggs chirps, watching the camera feed from the control room. "It's as though Subject-38503 accepted Subject-8925 as a full-fledged member of their family unit!"

"Who's Subject-38503 again?" Dave scratches his head.

"The mare."

"Oh, right! Vanessa! ... You know, it's easier to just use their names..." Dave remarks. "Anyway, it _is_interesting that she acted like hot shit, even with him, right up until he fucked Marianne."

"Indeed. Females seem very territorial of their chosen mate, in stark contrast to how the males behave. While the males seem willfully promiscuous, happy to use a female who's already been with another male, the females don't share that behavior at all. Subject-5, Anna, is still with Pvt. Emerson; she's refused to be receptive to any other males, even after we introduced her to new humans. Clearly, the females don't want new mates, nor do they want their mates to find other partners, as noted by how fiercely Subject-38503 fought Subject-8925 when she first approached him. Vanessa was highly territorial until just now." Dr. Briggs takes notes.

"I was worried we were going to be pulling a corpse out of there, but Marianne's a smart one!" Dave chirps.

"Curious..." Steve murmurs.

"What is?" Dr. Briggs turns to him.

"How Vanessa ceased her assault when she realized that her mate had already cum inside of her rival. Perhaps these creatures don't wish to harm potentially pregnant females? Some subconscious understanding? A survival instinct?" Steve begins.

"What's your point?" Dr. Briggs raises a brow.

"I was thinking about Subject-5 and something occurred to me... Do you think it's possible that we would've seen different results if we hadn'ttold the females that they were never going to leave the habitat? Maybe they only behaved this way because they thought it was their only chance at reproduction? It's the strongest drive, after all! We've seen how Anna behaves with Pvt. Emerson; she was so distraught when we pulled him out that you were worried she'd need a psych-eval! We moved them into Purple Base just so that she could live with him full-time, for her own well-being." Steve continues.

"I don't quite follow you..." Dr. Briggs stares blankly at his subordinate.

"Think about it! As territorial as they are with their mates, I was highly doubtful that Vanessa would ever accept Marianne as a second wife, if we may use that term, for Pvt. Palmer, and yet, there they are!"

"Nngf-nngf-nngf!" Vanessa's voice comes through the speakers.

"You mean..." Dr. Brigg's heart sinks.

"I think this whole experiment is faulty... The methodology is all wrong!"

"... Fascinating! Hmm... Perhaps this experiment is flawed, but at least now we know what females will put themselves through if given no alternatives! Their drive to reproduce, when faced with the prospect of never having another chance, will push them to ignore their more basic, territorial instincts!" Dr. Briggs chirps, taking another note.

"I probably could've told you that, though..." Dave sighs, resting his face in a palm.

"Aberrant behavior under stressful and/or dire circumstances isn't exactly an unknown, doctor..." Steve murmurs.

"We probably should've made it clear that this 'move' was temporary, then they might not have behaved so... Desperately." Dave suggests.

"Agreed." Steve nods.

"Hmm... I wonder if males would fight so fiercely over a single, fertile mate? ... Has Ms. Edmond recovered yet?" Dr. Briggs asks, ignoring his staff.

"Last I heard, she still had soreness and didn't enjoy walking all that much. She still hasn't been discharged from the infirmary." Dave says with a little smirk.

"That's unfortunate. We may need to begin looking for more female volunteers..." Dr. Briggs remarks, stroking his bearded chin in a sinister fashion.