XXX-Fiction

The transformation began subtly enough. She wanted me to walk her to the bedroom on a leash affixed to a crystal-studded collar around her neck. There she’d suck on my cock while I held the handle of the leash before fucking her from behind, still grasping the leash and tugging on it every so often at her request in conjunction with my hard thrusts. She told me she could only cum when I fucked her doggy style. Anna, my petite 19yr old girlfriend, always seemed to have a submissive streak. But as our relationship progressed, it became evident that she wanted more than a lover — she also wanted a master.

I shouldn’t have been surprised when she confessed to having a sexual curiosity towards my large male German Shepherd, Lex. Lex was a pretty horny beast, always humping furniture and legs. Anna admitted it turned her on, knowing the dog was horny and eager to fuck a bitch. We’d been together a few months, and I’d entertained numerous Daddy fantasies and schoolgirl fantasies, not to mention a rape scene. But I’d never once considered involving my dog in our sex life… She wanted the dog in the room when we fucked to fuel her overactive, perverted imagination. So I often nailed her doggy style while holding her leash as Lex watched, and Anna fantasized it was the German Shepherd hammering her hard and fast instead of me.

She always enjoyed using toys. The toy of her choice became a huge dildo modeled after a dog cock, about 8″ long and pointed at the tip with a fat bulbous knot at the base and everything. I’d fuck her up the ass with it stuck in her cunt or fuck her cunt with the toy lodged in her asshole. She loved it! One day I came home from work, she was in a brand new doggy bed that was big enough to lay back comfortably. I froze in my tracks at sight. In the living room corner, she was laid on the doggy bed, her legs spread wide, and the dog cock dildo stuck firmly in her juicy pink gash. Lex was a few feet away, watching her intently, his ears perking up at the sound of the toy squelching around in her cunt. They both looked up at me as I entered the room.

As depraved of sight as it was, it made my cock stir. Anna looked into my eyes, moaning while penetrating herself with the large toy. She was completely naked except for her sparkling black collar and blonde hair in bouncing pigtails. I went to the doggy bed and got down on my knees before her spread thighs, my face inches from her cunt meat. She took her hand off the base of the dildo, and I took over, fucking her cunt with it while licking all up and down her slit. Anna’s moans filled the house. I jammed the giant pink dildo into her hard and fast, trying to simulate the intense penetration of a raging beast, trying my best to satiate her. Her breasts, a firm B cup, bounced as she humped at my fist and the toy shoved up inside her.

“Fuck me, Daddy, fuck me like a dog,” she moaned.

Anna then got on her hands and knees in the dog bed and wiggled her ass in the air with the toy still knotted in her cunt hole, presenting herself for me. I unleashed my cock from my jeans and shoved it hard into her asshole as soon as my manhood was free. She cried out at the raw penetration, her upper body collapsing into the plush pet bed. I pulled on her collar and thrust my hard prick as far into her guts as possible while reaching beneath her with my other hand to keep the rubber cock firmly planted in her womb. Anna’s moans rang out through the house — she was always a screamer! She was grinding her stuffed pussy into my hand in no time while I hammered her shitter like a machine. My balls smacked against her ass with every thrust.

“Ooh yes, yes, I’m gonna cum, oh yes, don’t stop, keep that dog knot stuck in my pussy, ohhh yes, yes, ohhh fuck! I’m cumming! Ahhhhh, yesssss!” she howled.

“Cum on my cock, bitch, ohhh yes, I’m gonna fill you up with my sperm…” I growled into her ear, tugging on the collar.

Her asshole squeezed my cock meat hard as her climax began. Anna’s wails echoed off the walls, adding to the squelching sounds of both her pussy and asshole being fucked simultaneously. I kept the toy steady in her hole, her stuffed pubic mound in my hand. My nuts were tight, ready to explode! Anna’s body shuddered with orgasm, her asshole still squeezing my prick hard. I couldn’t hold my load any longer as copious jets of semen finally burst from my cockhead into Anna’s tight asshole, flooding her insides with cream. I groaned, bucking slowly and deeply at her hips, my cock lodged inside her rectum. She moaned even louder, feeling my prick pulsing inside her shithole and inundating it with cum. My prick went on throbbing in her asshole while she squirmed beneath me. I came so far up in her ass that it took a while for my sperm to begin leaking out of her after I pulled out.

The doggy bed fuckings continued. One day I came home, and not only did she have the dog dildo knotted in her pussy, but she also had a buttplug stuck in her ass with a furry white dog tail attached! Again she was naked aside from the crystal-encrusted dog collar around her slender neck. I was too aroused to process the surprise buttplug tail — I fucked her while she had it in. After that, she was almost always nude and collared with the buttplug protruding from her asshole. Did she want to get fucked like a dog? Like a true bitch?

It was my idea to get Lex involved finally. While she lay sprawled in the doggy bed, sitting on the buttplug lodged in her asshole, I gently coaxed the big German Shepherd to slurp up the sweet human cunt before him. Anna closed her eyes and let out a long moan when she felt the dog’s tongue slathering saliva up and down her pussy gash. Her breasts and belly quivered, her senses overwhelmed with such concentrated pleasure. Training the dog to eat her pussy out wasn’t hard once we got him started. Anna loved it — she would suck on my cock while the dog licked her slit up good, and then I’d inevitably unload my sperm in one of her holes after we orgasmed together while fucking doggy style. It was fucking incredible!

I became just as engrossed with her fetish as she was. Playing along with it, I purchased dog bowls for her and set them near her doggy bed. They were filled with chocolates and other random treats. Then I put up a particular kennel for her in our secluded, spacious backyard. I’d fuck her all over it while she was standing, hands grasping the chain-link fence, or while she was laying in her doggy bed. The collar remained on at all times. I even bought her a name tag for it but told her if she wanted to be a bitch, she had to have a bitch name — like “Sparkles.” And that’s what I had engraved on the collar, and I’d call her when telling her to choke down my cock or while fucking her hard in the cage.

After searching, I finally obtained a pheromone spray sometimes used in dog breeding. Anna (or should I say “Sparkles”) was finally going to get fucked like the bitch she was! The next day, a sunny afternoon, I led the naked bitch by leash out back on her hands and knees, her furry buttplug tail swaying with her hips, and then shut us in the kennel. I face-fucked her hard while she sat on the doggy bed, saliva running down her chin. My hands were on her collar as she sputtered upon my hard meat. Then I fucked her pussy before removing the buttplug to unload my sperm in her asshole. After the last jets of sperm spewed from my prick into her rectum, I plugged her ass back up with the dog-tail buttplug.

Then I got the spray and liberally doused her cunt gash with it. She giggled at the tingling spray and asked what I was doing. I didn’t answer. I told her to stay on all fours on the doggy bed. Her ass was raised in the air. I flipped the tail up, so it rested on the curve of her back, and I told her to stay put. Then I walked out of the kennel and called Lex over — he’d been running around in the yard. He entered the kennel and immediately ran over to Anna, sniffing the air excitedly. She squealed. I spritzed at her cunt hole and patted her engorged pussy gash, encouraging Lex to check her out. The dog took a deep whiff of Anna’s cunt, and I could see him begin humping the air.

I called the dog up onto Anna’s back, and he knew immediately what to do. His forepaws gripped her hips tightly as the pointed knob of his descending dick stabbed her supple asscheeks. She let out a shriek as the dog’s bone-hard prickhead then poked near her cuntlips. I patted her head reassuringly. Lex was so huge. His head reached over her shoulder as he lunged at her repeatedly, trying to get inside her. He was so eager. He was desperate to find a hole!

“You’re a true bitch, Sparkles,” I said, tugging her collar as I rubbed my cock against her lips. “Time to get fucked like one.”

She looked up at me, groaning as the powerful beast humped her manically. I walked behind her and helped steady the dog’s hips over her ass, guiding his prick up her juicy cunt slit to the entrance of her womb. She cried when the hard steel cockhead finally reached her cunt hole. Once he felt the warmth of her gushy orifice, he dove right in! Anna’s moans were steady as soon as the animal began penetrating her. I immediately heard the dog meat squelching noisily in her sopping cunt flesh. Lex was panting already, eagerly thrusting his hips at her. He immediately pushed her off the doggy bed with his hard thrusts. Her upper body collapsed against the fake grass of the kennel ground under intense penetration. She submitted to the animal as I knew she would act as a true bitch.

“Oh, yeah, fuck me, doggy, ohhh yes, yes, fuck me, fuck me like a bitch, yes, I want your doggy sperm, ahhh yes, oh shit, his cock is growing — it’s getting longer, oh my God!” Anna cried out. “Shit, this is incredible, ahhhh, oh my God…”

The dog cock squelched around in Anna’s juicy cunt hole with his every thrust. He was pounding her like a jackhammer, making her tits slap against her chest noisily. Her petite body was nearly eclipsed with the large furry one draped over her entire back. It was the sexiest fucking sight I have ever seen! Lex was determined to fill her with his seed, seeking to knot and impregnate the human bitch. I bent down to get a close-up view of the animal penetrating my girlfriend — I could see his pink prick splitting her pussy lips apart, jamming it inside her. Anna began shaking, her toes curling — I knew she was about to orgasm with the dog’s growing prick inside her cunt! Surely the animal was knotting her now.

“Oh fuck, his cock is huge now! His knot, holy Christ! Oh shit! Fuck! I’m gonna cum, ohhh yes, ohhh yes, fuck! Yes! Yes, ooooh, fuck me, doggy, yes, knot me, knot my pussy, fill my womb up with your sperm, oooh yes,” she cried out. “Oh yes, I’m cumming! Yes! Fuckkkkkk!”

The dog was still hammering at her hips hard, pushing her against the chain-link fence of the kennel. She gripped the fence hard, her knuckles getting white, her pussy surely squeezing the dog’s cock and knot as she climaxed on it. Lex continued humping as Anna writhed beneath him, her face against the fence. I jacked my raging dick at the incredible scene. Then the dog went still, his balls jiggling to a stop. I heard Anna gasp and then let out a long moan — I knew the dog must be erupting sperm up inside her womb! Her eyes shut tightly, her muscles taut and trembling.

“Yes, sperm in me, yes, yes, ohhh fuck, he’s unloading a gallon of cum into my pussyhole! Holy fuck! I’ve never… oh my God, ahhh, ohhhh, yes, that feels so fuckin’ good, yes, yes, yes! I’ve never, ever taken so much sperm! Fuck! Oooh yeah, ohhh doggy, give it to me, yes, keep going! His cock is still erupting cum inside me! It’s so hot. There’s so much of it! Ohhhhh….” moaned Anna, her head falling to the ground.

Lex stayed still over Anna, his hips bucking every so often. I could see her grinding back at him, enjoying the knot and prick stuffed up in her hole. The dog’s nuts jiggled as he tied and ejaculated in my girlfriend, and they occasionally bounced against her asscheeks. Anna’s tits swung beneath her. My prick was so hard it was about to explode! I wanted to unload in one of her holes, too! The big German Shepherd’s forepaws remained tightly wrapped around Anna’s smooth abdomen. Reaching beneath her, I caressed her fat pussy mound, bulging from the dog meat stuffed inside her, and she let out a long moan. My fingers strummed her clit, and she ground her hips, her cries growing louder as the dog cock moved around with her gyrations.

“Yeah, baby, you look so fucking hot… Squeeze your pussy muscles around that big dog knot and dick… Good bitch… There are droplets of cum leaking out of your cunt hole now. I can feel it oozing onto my fingers — here, lick it off, Sparkles,” I said to her, taking my fingers and raising them to her lips. She eagerly sucked my fingers clean, moaning. “Yeah, that’s a good doggy slut… Taste that dog cum. Imagine how much dog sperm is sploshing around in your womb right now, you sexy little bitch!”

Anna moaned, humping at my hand and the dog dick tied into her pussy. Lex panted, now calm, looking as satisfied as a dog could look. I went over and started face-fucking her while she remained bent over and knotted to my large German Shepherd. The sight before my eyes was just incredible — it was so dirty, raunchy, and taboo — I struggled to hold my load as long as possible. Anna looked at me with big blue eyes while choking my cock down. A shimmering trail of saliva led from her thick lips to my balls as she began enthusiastically licking up and down my shaft and balls. I groaned. The dog looked up at me, remaining motionless with forepaws tight around Anna’s waist. She moaned as she slurped my cock, her hips still slowly gyrating.

I reluctantly tore my cock from her lips, resisting the urge to deposit my seed into her throat, and walked up behind her again. Her juicy cunt pulsed around the animal’s member. A string of dog cum oozed from her knotted pussy down to the ground. I reached out and began massaging her bulging pussy mound again. Anna moaned, grinding at my hand. My fingers built up a fast pace on her clit, and her cries grew louder. When her muscles began tensing, I knew an orgasm was building up again within her depths. Her moans turned to gasps and grunts, her entire body shuddering, so weak now and weighed down by the mighty dog. Lex let out a whimper as Anna humped at my hand, her strong pussy muscles surely squeezing his knot and prick with her orgasm.

“I’m cumming again, ohhh yes, fuck! Yes! Yes! Yessss, oh, fuck yes, fuckin’ love this dog dick, oh my Goddddddddddd!” she cried out.

As her orgasm rocked her body hard, Lex whined and began struggling to break free. Anna moaned even louder as the dog tried to pull his engorged meat out of her sensitive, spasming cunt hole. She cried out again when the dog suddenly stepped over her, now ass to ass with her. I stepped back and admired this new development — the knot was still lodged in her tight pussy canal, more sperm leaking out of her while their bodies stayed locked so lewdly in coitus. Lex panted, looking up at me as if for assistance. Anna looked up at me, too — a look of animalistic lust and desire on her sexy flushed face. I came closer and began playing with the buttplug tail still stuck in her ass — I’m sure it felt good to have both holes filled up at once.

After pushing the buttplug in and out of her ass, I slowly pulled it out. Then I stepped over her back and began rubbing my dick all over her asshole while the dog’s dick was still in her cunt hole! It required some maneuvering to avoid startling the dog, but after a few moments, I could fill her tight shitter up with my raging purple cockhead! We both grunt as the corona of my turgid organ enters her asshole. I leaned forward over her, trying my best not to disturb the dog still tied to her cunt hole. An uncontrollable lust took over me — an animalistic, almost jealous desire to fill her with my seed! My hands went to her breasts, holding her tightly. I continued slowly thrusting my hard steel pole into her darkest depths, now almost halfway inside her. The dog stood still, remaining locked to her pussy for the moment. I needed to get my entire length in her so severely, nearly aching! I needed to get balls deep, then fill her guts with my cum! Whatever hole, I just needed to release my flood of semen inside the bitch. Any hole would do!

We groaned together as I shoved more than half my meat in her incredibly constricting asshole — it was even tighter than usual with the large knot lodged in her pussyhole! Lex began stirring again, and I moaned, feeling his cock and knot moving around in her cunt through the thin walls of her asshole. I bucked my hips at her hard, determined to get my prick into her while the dog was inside her, too! She shrieked as my cock plunged into her bowels, filling her ass while her pussy was filled with dog dick! I gasped — I couldn’t believe the position I was in! It was fucking incredible. Lex whines, pulling on her with his engorged dog meat. I moaned again, feeling the dog pulling her closer to me by the cunt! Her ass swallowed my prick to the brim. I shuddered, my balls feeling the pleasurably soft dog fur around her wet pussy gash while I stayed deep in her rectum.

I stayed still so as not to frighten the dog. He calmed down again for a few moments, so I took the time to gently rub Anna’s nipples and breasts and bite her neck while two dicks penetrated her holes. She was moaning and writhing, using her hand to rub her clit. I slowly thrust into her ass. My dick was sealed up tightly in her hot orifice. Her pussy bulged with the dog cock — I could feel it! We both moaned, delirious now with arousal. My senses were heightened, so aware of the sound of her holes squelching with meat and cum, the smells of her cunt juice and the dog sperm, the feeling of the animal’s fur on my balls…

Lex began struggling again, and Anna and I both moaned. I kept my cock jammed far into her asshole and savored the pleasure of the dog dick moving around in the hole next to the one I was inside. Anna kept rubbing on her clitty, trying to coax another orgasm from her depths before the dog could pull out. She rubbed her hard nub fast, her body trembling beneath me. I stayed still, letting Anna’s climaxing body and the struggling dog do all the movement for me. My prick was so engorged, so ready to blow. I kept my hands firmly on her ample breasts, massaging them and kissing her back and neck as she began crying out again that she was cumming! Her body shook, evidently exhausted from her intense orgasms and the manic fucking!

I groaned again, feeling her asshole clenching my dick even harder with her climax. The dog whined again and pulled to break free. She let out a long wail, throwing her head back in ecstasy. I kept my body close to hers, so tight against her, just as Lex had done when he’d mounted her. My nuts were tight now. Anna quaked underneath me. Her body was pulled even closer to mine by the dog trying to tear out of her. I moaned, feeling the dog cock and knot moving around in her oozing cunt hole. Then I closed my eyes and gasped, my raging muscle pulsing and beginning to erupt inside her guts! Anna groaned, feeling my prick pulsating in her rectum now, her climax subsiding, my prick flooding her shithole with cum, and the dog trying to dislodge his huge fuckstick from her pussyhole!

My cock shot a copious load of semen deep in Anna’s bowels, throbbing for several minutes. I kept my eyes shut tightly, overwhelmed with ecstasy, my breathing ragged. Anna gyrated her hips weakly as the last pulses of her orgasm subsided. Meanwhile, some dog cum had leaked out of her cunt hole over the ground into a giant puddle. The animal’s prick squelched around in her womb, and she let out another long groan. Lex was trying to free himself now. I turned around, my prick still in Anna’s ass, and tried to calm the big German Shepherd, but he was determined to break away from his human mate. Anna had tight pussy muscles. I knew that from experience! Indeed they had a good hold on the beast’s massive member, keeping it stuck in her womb.

With a loud popping sound, I took my prick from her asshole, my cum way up inside her. Then I put the doggy tail buttplug back in her ass to keep my sperm sealed up in it! She moaned. Lex started dragging her behind him, desperately trying to pull his knot and cock out of her. She cried out, clawing fruitlessly at the ground while dragged from behind on all fours. Lex whined. I patted him on the head, trying to keep him calm. He was stuck in her good! The amount of sperm that had leaked out of her cunt was unbelievable — I could only imagine how much more was still in her womb! It was all over her thighs now, too. I tried to keep them both calm and wondered how much longer the dog would stay knotted to her.

My prick had only semi-deflated — it was ready to go again in just a few minutes. I was so fucking aroused. So I face-fucked her as best as possible since the dog pulled her around a little, but I felt restless. I wanted all of her holes! Pulling my rigid member from her mouth, I went up behind her again to fuck her asshole again. This time I kept the buttplug inside her, making her scream as I tried to stuff the head of my cock next to it. Her ass was so tight, I got just the head of my dick in, and that was it! She gripped the ground beneath her, knuckles white. Lex barked and again pulled, straining to release himself from his human bitch.

Anna and I gasped when the dog finally tore his enormous dripping fuck tool from her womb. Our eyes were wide at the giant, bright pink prick — at least 8″ with a hard red knot the size of my fist! A torrent of sperm was released from her cunt hole. My carnal desires took over at the sight of her pussy leaking so much cum — I needed to flood her womb with my sperm, too! She cried out when I pushed her down onto her back on the doggy bed, the buttplug jamming hard up into her rectum as she lay with legs spread wide. I stared into her cunt, a glaze of dog cum covering her pussy mound and thighs. Her pussy lips were bright pink and so engorged.

A puddle of dog cum instantly formed underneath her. I stood before her spread legs, the base of my thick cock in hand. Then I rammed my prick balls deep into her gushy hole, so wet and inundated with dog semen. She moaned at my sudden penetration, hands wrapping around my back, nails digging into my flesh as I hammered her pussy hard. Her cunt was so loud, squelching with cum as my cock pistoned in and out of her! More and more dog cum leaked from her with my every thrust. We were both grunting and moaning, rutting like animals on a doggy bed. Lex was licking his deflating package of steel, casually watching us. I licked all over her tits and nipples as I fucked her hard, slamming my pubic bone into hers. Now we were both covered with dog cum! I fucked her hard and fast, like a machine, like a dog, as fast and hard as possible.

Her pussy muscles clenched my dick tightly. She began writhing beneath me and screaming that she was cumming again — I didn’t slow down or skip a beat! I continued hammering her pussy, slapping my thighs hard against hers, my prick balls deep inside her womb. She clawed my back, face contorting with pleasure, a howling moan escaping her lips. Lex’s ears perked up at her piercing shriek. I groaned, her cunt so tight now around my member. My balls grew tighter — I didn’t want to cum so soon, but her pussy was practically milking the sperm from my cock! We both rocked and grunted together as my orgasm began. My cock throbbed, jets of cum suddenly erupting deep into her hot hole. I gasped, almost as if I might pass out with the intensity of my ejaculation for a moment there!

Anna looked up at me in a daze, my prick still oozing its last globs of semen into her womb. Her warm cunt flesh was still pulsing around my meat. She was trembling, looking exhausted but satisfied. A smile broke out simultaneously on both our faces — I think we were both thinking there would be lots more dog fucking soon! Our sex life would never, ever be the same. And that was undoubtedly for the best!

After I pulled my semen-covered cock out of her juicy cunt, I walked her — leashed, of course — on her hands and knees back inside the house, leaving a trail of dog and human cum from the back patio through the kitchen and living room!

 

The End.

 

*This story has been edited to fix spelling, formatting errors, punctuation, & basic grammar, but the narrative and plot have remained the same. Even with the limited editing done here, it doesn’t always mean the narrative/plot flaws in a story are fixed (That’s the author’s job). The opinions/views expressed in this story (and in any comments) are those of the author and do not represent this site. We support freedom of speech. This story has been previously published on other free sites and is now public domain, which is why we can publish it here.