The Insatiable Estrus Equine

Story by Runa on SoFurry

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Just a little something I put together very quickly for a friend who wishes to remain anonymous. I have some backlog to take care of, but the trade involved was just too pleasant to give up. Anyway, a friend of mine asked for the most anatomically correct mare fisting story I could conceptualize, and with the help of a few of my equine savvy friends, I was able to ensure that everything I wrote here is biologically accurate.

Yes, this is very explicit Zoo Material. I am giving you fair warning now. If anyone out there can contest my assertions this is anatomically accurate, please do so in notes. I don't want any drama, please, and I know any zoophilia related stuff will get a lot of moral guardians coming to the rescue.

Anyway, there was one part the commissioner wanted me to add, but I really didn't want to add a few things, so forgive me if that one part is missing. I'm not comfortable writing that.

Anyway, you are certainly free to critique it, but this wasn't meant to be a full story, just a rough draft, so that'll have to do. Again, feel free to point out factual errors, but use your head. Don't say something you don't want others to know in the open.


The Insatiable Estrus Equine

This was going to be harder than I thought. I'd told people about my encounters with some of the feral equines in the area, and naturally people begged me to prove it. I'm nothing if not a bird of my word, so indeed I must prove it. Why is it going to be hard? Well, it's incredibly windy tonight and my sensitive avian ears are being overwhelmed with the howling of wind, the rustling of trees, and the occasional creaks of signs as they swing in the night. If someone did approach me, I likely wouldn't hear them over the calamity caused by the wind.

Alas, I have my pride to look out for, friends to please, and nothing to lose.

It's past midnight and the sky is filled with clouds, leaving only the street lamps to guide my way to the racetrack stables. I'm nervous as can be, much as I could handle being caught, I'd really rather not raise suspicion regardless of how much my friends will appreciate it. I shake my head at the conflicting thoughts in my head and focus at the task at hand. I'm hovering relatively silently in the night, near the racetrack, seeing if there's any movement below, but my eyes can barely see anything in the pitch black night.

Without warning, I hear an alarm going off nearby. It's not coming from the stables, but one of the buildings nearby.

Panicked, I do a U-turn and fly away as fast as I can. That noise is sure to attract some attention from the authorities or even the owners of the building. Perhaps tonight wasn't my night.

Disheartened, I slowly glide towards home, ready to call it a night, but my pride and my desire for a repeat performance drive me to try again. After half an hour of stalling, I turn around and try again, making sure the alarm has run its course and the stables are safe to be approached.

This time I'm a confident nobody is around or watching, but something worries me. There's a light on that's never been on before, and the entrance I usually go into doesn't have the vehicles parked in front of it like usual, meaning anyone would see me walk in if they were looking. Usually I'm confident I'm safe, because of all the cover, but this time there's practically spotlights saying "This is where the invader enters."

I have another fleeting moment of doubt before I realize that, even if it's lit up, everyone is asleep at this hour without exception. Even if someone is awake enough to see me, they'll disregard it as something in their mind.

Scream for the kill. It's time to dive in and hide behind the stables. Landing is hard in the night, since my wings weren't built for the cool night air or silence, but I manage to do so with relative ease. It's amazing what you can do when you concentrate on doing it right.

I sneak up behind the stables and peek around the corner. My eyes aren't perfect, but as far as I can tell nobody's coming. It's time to rush on in. I take a few deep breaths and dart out from behind the building, slipping into the crack in the sliding barn door, folding my wings close to ensure my feathers don't snag on nails. Don't need anyone identifying my defined feather pattern, and I know from much scouting that there are no cameras or other security equipment. As long as I could get in and out without getting caught, I was home free.

Once I was comfortably inside the barn, I took in a deep breath to sample the scents of he various horses. I knew plenty of anthro equines, but none had the earthy, bestial scent of a feral. I would be completely happy just standing here in the entrance enjoying the aromatic ambiance, but I have things to do.

I reach into my satchel and pick out an apple as I go to see my favorite mare. She's mostly dark brown with some white speckling on her head and upper body. She's quite beautiful, and I'm not just saying that because she lets me ravage her loins, she truly is a magnificent creature.

I dig my claws into the apple to rip it in half when a large gust of wind howls through the barn, slamming one of the doors and startling me, jerking the apple from my hands.

The mare looks at me and rears her head back, a little disappointed she's not munching on apple yet.

"Fine, fine. Sorry." I apologize as I lean over, dusting the apple off and cleaning it of hay and dirt before splitting it into four pieces. I offer her the first chunk which she happily takes in her lips, munching contentedly.

I reach for the gate latch to open the stable; she knows what this means so she gently backs up, giving me lots of room to move the door. Once I slip in, I close the door behind me and turn to the mare, who is now nuzzling at my chest; her deep exhalations are tickling the feathers on my chest. I feel a shiver trail down and then back up my spine as my plumage puffs itself out. "Careful there, dear, don't want to get me too excited." I coo gently as I bring my free hand up to scritch at her powerful neck, gently dragging my talon from her head to her chest.

She seems to like it, but she's still more interested in the apple, so I give her another piece to chew on while I continue to scritch her. Much as I'd love to get to the goods, I actually do care about this mare enough to make sure she's comfortable and happy. Even when in heat, mares can be fickle and moody, so even though I'd recently gone elbow deep in this estrus equine, that didn't mean she was still interested.

I continue to hug and nuzzle and preen at this glorious beast as I feed her the rest of the apple, but now that I know she's comfortable with my presence, I feel it's time to get to work. I had something to prove, and my partner here was going to help me prove it.

I reached back into my satchel to make sure I had the rest of my equipment ready. A small bottle of lube, just in case, as well as a camera and flashlight since it was dark. Holding that camera was a true pain in the ass, as a beak was not exactly made to hold things in it unless I was ripping it to shreds or swallowing it whole. Ah well, I've made due before, and I will again.

Slowly but confidently, I tiptoe around the mare's healthy and thick body, placing my palm on her hip and slowly brushing it down beside her tail.

Odd, she's not lifting up like last time. Yet another warning sign that perhaps tonight isn't my night. She looks back at me and lets out a snort before looking away again. I'm sure if she didn't want me to continue, she'd have made a ruckus or something. Either way, I continued.

Cautiously, I pushed my fingertips in between the side of her rump and the underside of her tail, which she still wasn't lifting for me. I wiggled my digits back and forth to dig in deeper until I felt her velvety vulva on my flesh, which gets her to raise her tail a bit for me. Very nice, perhaps she is interested, after all!

With the bit of freedom granted to me, I cup my palm over the bulge of her meaty pussy lips, rubbing my fingers up and down her slit to feel a bit inside. She's hot and very moist, but she's still not giving me much room underneath the tail.

I don't want to force her, but I convince myself that it'll be okay to use my free hand to pull the tail to the side; I don't want any of her hair getting caught in her slit, I know how painful that can be. I once had someone try to use my own tail to fuck my own slit, and it wasn't pleasant.

Problem is, she didn't much care for the bit of force I applied to the underside of her tail, so she clenches it down and traps my hand between her appendage and slit. I can feel the pressure forcing two of my fingertips into her, so I make the best of the situation by pushing them in deeper, wiggling them around to rub up against her exceptionally slick and wonderfully silky pussy walls. No matter what I do in life, I don't think any animal's love canal will rival that of an estrus mare cunny.

As I rub my fingers up and down inside her, she loosens up a bit, and I find I can get two more fingers in there, but there's no way I can get my fist in. I'm wiggling each of my digits in a wave, ticking her inside and smearing her fluids all over, urging her to let me in deeper.

She finally raises her tail, but there's just not enough lubrication to let my entire hand in. I give a bit of pressure and try to rotate inside her, hoping to use the bits of lube to moisten the back of my hand, but it's still not enough. I can feel her pussy winking eagerly at me, the bits of cherry pink flesh folding out to squirt little bits of lube all over my forearm. She shifts on her back legs and spreads her hooves apart, widening her stance; she's ready to be bred, but her opening is still too tight for me to slip into, so I use my free hand to get the lube out.

I pop the lid and smear some on the back of my hand, trying my best to spread the fluid around both her and me for the best, most pleasurable experience. Once I'm sure the lube has been applied, I put it back in my satchel and pull the horse's tail hair off my hand, keeping it from sticking as I apply a bit more pressure.

She's still winking intermittently as I spin my limb inside her, but I can tell she's getting a little uncomfortable. My arm kin is rougher than the velvety texture of the horse cocks that are meant to bury themselves in a mare, so I hold back and am a bit more gentle with her. I keep forgetting that just because she CAN accommodate my arm, it doesn't mean that it's easy for her. I stop pushing and twisting, and I stroke her flank to calm her down. She stops grunting and looks back at me before shaking her head and looking away again.

I'm no horse whisperer, so I have no idea what that means, but I slowly return to my affections. I can feel my own member stirring in my slit, but I'm not here to give myself pleasure, I'm here to give her pleasure and record it to give my friends pleasure.

Oh right, record it. Damn, I was so worried about making sure she was warmed up I forgot about my duties!

I can't pull my hand out of her for fear of the lubrication drying out in the air, so I fumble with my free hand in my satchel until I grab the flashlight. I'm careful when I turn it on, nothing worse than spooking a horse when you're knuckle-deep in her pussy, standing right behind her. I make sure the end of the flashlight is buried in my chest floof as I turn it on, slowly rotating it to aim it at her rump as I put it in my beak.

The flashlight illuminates a wonderful sight. I can see her thick, meaty lips parted and somewhat stretched around me, the occasional wink turning out some of her cherry pink flesh underneath. I almost don't want to bother with the camera, I'd rather just get down on my knees and bow to this goddess as she covers me in her fluids.

Regardless, I brought a camera, it is time to use it. Still fumbling with my free hand, I reach back into my satchel and grab my camera. I like my camera, it's simple to turn on and use. Hold the power button to turn it on, make sure the dial is set to video, and one click of a button. I'm recording. Getting a good angle is kind of hard with one hand and a flashlight in my beak, but I manage to get what think is a good angle.

Now that I've got a good angle, and my fingers are still in a cone shape trying to wiggle their way into this wonderful mare, I once again apply pressure to fill her up more than any stallion. I can hear a sloppy whoosh sound as her pussy opens up, almost sucking me into her! My knuckles slip past her meaty cunny lips and continue to slide deeper into her. It's amazing just how wet she is, even without my added lube. I'm also a little disappointed to see that her pussy has been inflated, and my arm isn't able to touch all of her walls at once.

I try to pull out slowly, perhaps release some of the air that's keeping her flesh from smothering mine, but it doesn't do much, so I push back in, careful to keep the camera aimed at the underside of my forearm, getting a wonderful shot of her winking clit as she clenched down on me.

I pushed in deep, until I felt I couldn't go in any deeper. As I slide my thick, muscled forearm into her, she arches her back and raises her tail, grunting as she pushes back a bit. Yes, this is what I want her to do; I want her to enjoy it, to feel like she's being mated good and proper by a well hung stallion.

My own cock is threatening to unsheathe, but I'm not yet ready for that so I ignore it and push in deeper. Eventually, the lube on my forearm runs out and I can't go in and more, so I slowly pull out, pressing my palm against her G-spot, which I'm noticing is as engorged and rippled as the pussies on my own kind, but much, MUCH larger. I rub forward and back as my moist foream slips effortlessly from her confines, a wet schlicking sound accompanying my escaping limb.

As I do that, she lets out a powerful pussy fart as the air inside rushes out; she's clamping down on me and wants me to fuck her rough! She's ready to cum, and franky so am I. I ball my hand into a fist inside her VERY careful to not catch any of her flesh on my talons, and I thrust into her like an aggressive stallion. I pull out almost completely so my balled fist is rubbing on her engorged G-spot before pushing it in as deep as I can go.

She lets out a powerful grunt as she pulls her tail up as high as it can go, which sadly brings some hair in front of her entrance, obscuring my shot. I don't care, I care more about keeping her pleasure at the plateau, I'm sure the footage I have is good enough.

I feel her entire body shudder as her pussy walls clamp down on me, oddly tugging my fist in deeper to let my knuckles rest against her firm cervix. She winks a few more times, tickling the fur on my elbow and spraying bits of fluid down my side as she holds me tight. I stop thrusting and open my hand, trying my best to imitate a flare inside her, but that's not enough. After holding for a moment, I slowly pull my open hand out of her.

She shifts from one back leg to another, tail still raised as she twitches in delight, releasing a stream of creamy, powerfully scented fluid from under my arm. I can feel it gumming up my feathers and fur, but unlike the last time I did this, she's not forcing my hand out by clamping down. This is an odd pleasure, she's came once already, is she prepared for a second go? My hand is on her g-spot again, palm cupping it as I get a genius idea.

I try to lift her flesh up towards the ceiling of her canal and bring the camera in close for a gape shot. My thumb and pinkie finger are doing all they can to spread her lips, and I can barely see in the camera that the shot is wonderful. The little screen shows that her pussy is gaping for at least a foot into her; the cherry pink walls are quivering in delight in between winks that spew out bits of fluid all over, barely missing the camera lens. With her still shuddering in delight, tail lifted, I slowly push my fist back into her, waiting to see her reaction.

Much to my surprise,she loosens up and her pussy grows greatly, once again sucking me in as well as a mass of air to ensure I can't rub against all her walls at the same time. That's a little disappointing, I love it when she clamps down on me and smothers my arm. That sensation of flesh rippling and clenching down on me is what made me love mares and other vaginally endowed creatures so much, to have her open up like a roomy cave kind of defeats the purpose.

Camera still aimed close at her tender entrance, stretched thick as my forearm parts the lips, I do my best to rub her most sensitive parts. This time, I notice the lining of her lips are even more tender than before and I can go in a little deeper, so with my fingers still in a cone shape, I push in as deep as I can, until I reach a wall. Her cervix. I tickle around inside her, curious to see if what I was told was true: could stallions really penetrate into her womb?

It takes some exploring, which I know she likes because she's not once tried to walk away and she's still grunting and spewing maregasm cum all over me, but I eventually find a small opening amidst her back wall. Odd, this opening is at least two inches in diameter, and is clearly the entrance to her womb; I thought the cervix was supposed to stay closed unless giving birth! Ah well, she seemed to like it, as she was pushing down on my arm and sucking on my every inch.

My beak is practically forced against her rump, and I get an overwhelming blast of pheromone scent in my face, clogging up my nares. The air around her pussy is a veritable cloud of thick aroma, and it's beginning to drive me wild. I can't take it anymore, so I slowly pull out from her depths and get another gape shot before shutting the camera and flashlight off. I put them away and zip up my satchel before pondering something I really shouldn't ponder.

Can I get two fists in? She seems to be incredibly slick and roomy, and based on how easily my thick forearm was able to penetrate her so thick and so fast made me think that at least my hands could fit. Yeah, I'd give it a shot.

In the back of my mind, I knew it wasn't 'safe' to stretch a mare that much, but those pheromones drove me wild and I was no longer thinking with the proper head. I could feel my gently textured cock slip from my slit and drip its own mix of fluids onto the hay that lined the stall floor.

I brought my free hand up to beside the arm that was smothered in mare cunny flesh, slowly pulling it out as I pushed my fingers from my other hand in. Astonishingly, her lips parted with ease and I was able to ease my entire other hand into her until both of my hands were inside her, the relatively tight opening clenching down on my wrists.

Oh my god, I couldn't believe this was actually happening! I was double fisting a mare!

To my delight, she kept grunting and pushing back on me. I could feel her flesh clenching down before gaping open to suck me in, her pussy winking between my hands and smearing her fluids all down my front.

With both fists in wholly, I pushed one arm in as deep as I could careful to make sure she didn't feel like I was giving her more than she could handle. I balled my one hand up into a fist deep inside her, then slowly pulled it out, forcing my other hand in and balling it up, too. Back and forth I went with both fists, pumping one in then pulling it out only to push the other in. The more confident I get, the earlier I start pushing the second hand in, until the first hand is only halfway out before pushing the second one in. She's still grunting and arching her back, pushing back on me.

This mare is insatiable! She wants more!

I can feel her clenching down as I alternate my fists from pumping inside her, then she opens up with air before forcing it out in a meaty squelch. It's a truly wonderful sound, coupled with the sensation and scents, I'm driven absolutely wild.

I feel my cock almost fully hard and my knot bulging, so I know it's about time I finish up. She's already cum a half dozen times and the wind is still howling through the barn, so I have to go home soon.

In one last 'go for broke' moment, I push both of my arms in her as deep as they can go. I revel in the sensations of both of my arms slipping into her, one set of fingers massaging her gaping cervix, both of my elbows touching just above her winking pussy. I can feel her clenching down to bind my arms together, so I slowly pull one out with a wet slop as another burst of mare fluids explodes onto my belly. She clenches down as hard as she can as the rest of the air from inside erupts in a queef that echoes in the stable walls.

I have to stop myself from laughing, but the knowledge that she's enjoying herself greatly overrides any sense of humor I may have.

I continue to thrust my buried arm into her, alternately extending my fingers and balling them up into a fist to tickle and apply pressure to each and every inch of her needy cavern. I use her fluids to stroke my own cock as I do so, the moist aroma clouding my mind and bringing me to an amazingly quick climax, spewing white bird seed all over the ground.

I could just pull out and be done with it, but last time she came for me and was done, she clamped down so hard I couldn't keep my fist in her. I'd continue to pleasure her until she gave a repeat performance; I wanted to be sure she was as spent as I was.

My cock was slowly deflating and shriveling in my palm, but her engorged pleasure spots were growing ever larger as the cum built up in her. I continued to thrust like an eager stallion, slowly pulling out and pushing back in until she tense up her whole body and let out a powerful grunt, pushing down incredibly hard and forcing my hand out of her, my palm brushing over her engorged g-spot and eventually her winking clit in a wave of creamy mare cum.

I stood there in the barn, one arm dangling at my side as I let out an extended sigh of pleasure and relief. It was over. I could hear my breath quavering as I couldn't get a solid breath in; I'd exhausted myself wholly by pleasuring this insatiable mare.

She knew I was done, and having spewed her cum all over me and the stall wall, she walked away from me, winking her clit to spread the scent and get whatever excess fluids were in her out. I noticed she was walking a little funny, due to how rough and deep I was riding her, and deep down inside I hope I didn't hurt her.

She turns around and nuzzles into me, begging for the second apple that I brought.

Hands still covered in mare fluids, I reach into my satchel and pluck out the remaining apple and split it in half, giving her each bit to much on one at a time. She seems happy, she seems content, and I'm spent.

Part of me wants to go again, and another part just wants to bury my beak into that wonderful cunny to lap up every bit of moisture and inhale her scent as deeply as I can, but the smart part of my brain was starting to regain control, so I tell myself it's time to go. I wipe my hands off on my chest feathers and silently unlatch the stall door and slip out, quickly darting past the light and into the windy night.

Three days later, I still can't get the scent of mare cunny out of my feathers and it's been the cause of great despair, since every time I lean down to preen I get a powerful whiff of it and I need to fap. Goddamn mares are so perfect for me. Maybe I'll talk to Melodi about some experimentation we can do together.