Luna visits a stud farm

Equus ferus caballus.

Luna read the scientific sounding name, mouthing the words, her eyebrow rising slightly, then her gaze fell on the rest of the small sheet of paper.

The horse, or Equus ferus caballus, is an Equine creature native to the human world, closely resembling our Saddle Arabian cousins, but with a few major differences. For one, horses are said to lack pony-like cognition.

Luna snorted impatiently. She already knew all this.

They are strong, great with manual labor, and make for great pets.

The Lunar Princess groaned, her eyes rolling in their sockets, before landing on the short report again.

They are also fond of apples.

The writing ended there. Luna turned the paper around, wondering if Twilight had written something on the back of it, but the scroll was barren. She looked back at the couple of lines, her brow furrowing. Was this what passed as a joke in this day and age?

“I cannot believe this.” Luna let the small scroll fall on her work table, the alicorn grabbing a quill and ink pot to write a hasty reply, whispering out loud as she scratched the back of the parchment. “It would seem our sister’s penchant for japes and other tomfooleries hath rubbed off on you, friend Twilight Sparkle, and we appreciate your quip. Hahaha.” Luna’s eye twitched, her quill almost puncturing the paper as she wrote the last ‘ha’.

“But we would ask thee, nay, beg for you to give us all the information you possess on our un-Equestrian cousins. You are the only one to have travelled to the human world, thrice now, you have to know more. Help me Twilight Sparkle, you are my only hope. By the Moon’s light, your friend, Princess Luna.” Luna carefully spilled sand on the scroll to help the ink dry up, tapped the missive clean then rolled it back up. She took the scroll in her navy-blue aura, applied her seal, before closing her eyes as it disappeared in a flash of green fire.

Luna reclined back on her chair, looking out her window; Equestria was fast asleep, the full-moon high in the sky, bathing the land in a soft tint of blue. Usually the sight would fill Luna with a deep sense of peace, but tonight it only served to aggravate her; she should be out there, helping her little ponies in their dreams, not stuck in her room like a grounded foal. She squirmed in her chair, the reason for her dereliction of duties trickling down her thighs: for a few days now she had entered her estrous cycle, making concentrating on her dream-walking next to impossible. She was used to her body becoming more sensitive, her loins becoming slightly moist with pheromone-laden drips, but this time it was completely different.

This year her heat was stronger than ever before, and she had little choice but to bear with it until it ended. For days now her royal slit was positively drenched with arousal, the heady liquid constantly running down her thighs, her ethereal tail damp with her juices. Her nethers were constantly twitching in need, a blaze raging deep in her belly, her marehood winking obscenely wide at the worst of times. Her scent was also incredibly potent, as she had found out on the first day of her heat.

On that morning, she had not realized she was leaking everywhere when she woke up, the Lunar Princess always groggy before her coffee, and after a quick shower she had paraded in front of her bat pony guards like she always did, heading to the royal dining room to eat her breakfast. She had heard the thestral stallions stir strangely as she passed by them, the sounds of sniffing and whimpering escaping their usually stoic muzzles. When she had looked back they were completely still, their impassive expressions intact, but as soon as she turned the sounds returned. She was too tired to think much of it at the time, and she had made a note to review her troop’s discipline later.

Like always, her sister was eating dinner when Luna made a great entrance in the dining room, the guards and servants bowing as she approached the table. Celestia had smiled her kind smile, her lips opening to exchange her usual pleasantries, but before she could say anything her nostrils had flared with a surprised snort, a look of utter shock spreading on her white muzzle. Luna glared at her sister, watching the solar princess sniffing the air like a dog, convinced the alicorn was preparing one of her incessant pranks; she had made sure to examine her chair for any pins or whoopy cushions before sitting down. Strangely enough, the maid who brought her cup of coffee was blushing profusely, the mare refusing to meet her gaze as she set the steaming mug before a her. Luna had watched the mare scurry away suspiciously fast, and she sniffed the contents before taking a careful sip of her coffee.

It was her favorite grind, black as the night and bitter as could be, free of any tampering. She smiled, taking a bigger gulp, before her eyes were drawn to her sister once more; she then paused, mouth full of hot coffee. Celestia had the look of a rabbit cornered by a fox, her usually white cheeks now a deep crimson, and she looked about to faint. Her nostrils kept flaring wide, as if smelling a delicious cake being baked, a wince crossing her muzzle whenever she did so. Slowly, Luna had put her mug down, her cheeks puffed out as she gave her sister a questioning look. Celestia whimpered, squirming in her seat, before taking one hoof from under the table, pointing towards the solar guards lining the walls. Luna carefully turned her head, completely confused, and she followed Celestia’s indication, watching the solar guards squirming strangely, as if needing to go to the bathroom… and what was that bobbing under them…

She had almost choked on her coffee when she had spotted the first engorged stallionhood swinging under a burly armored pegasus, and she had spat the hot liquid all over the place when she realized all of the guards were sporting impressively swollen erections, some of them already leaking precum from their flared tips. Outraged, she had jumped from her seat, intent on admonishing the stallions for their lack of control… but her seat had jumped with her, as if glued to her flanks. Only then did she realize her rear was completely drenched, a waterfall of her own juices falling from the dripping chair, her arousal already forming a large puddle on the ground. She had remained frozen in place for a few excruciating moments, the silence only broken by Celestia’s incessant sniffing and the loud slaps of cock meeting armored belly.

Luna had prayed for the ground to open up and swallow her whole, but in the end it was her sister who came to her rescue, teleporting them both to the royal baths before she could humiliate herself further. Celestia had placed a clothespin on her muzzle as she helped clean her sister, scrubbing with a loofa like when they were just fillies, Luna too mortified to speak.

The incident had been classified top secret, so of course everypony in Canterlot knew about it by now; ponies were awful at keeping secrets. The papers had a field day: “Princess Luna tries to seduce ALL the royal guards at once, hundreds end up in the hospital for acute priapism.” Lies and slander! Only fifty or so had been afflicted with dangerously persistent erections, all had made full recoveries! Mostly.

Luna had tried everything to keep her scent contained, but anytime she walked out her room the same happened: stallions’ nostrils flared, sniffing the air like hungry hounds, their cocks slipping from their sheaths instantly, and mares blushed and scampered away, as if scared off by the strength of her scent. The worst was her sister; Celestia avoided Luna like the plague, the Solar Princess wearing a silly looking gas mask whenever they had to meet. The situation was just ridiculous.

Now confined to her room to avoid turning the castle into a mess of erect cocks, Luna had turned to the only thing that could distract her from the burning need in her nethers: research. She had plowed through a month’s worth of magical theory papers, had caught up on the recent history she had missed while on the moon, and had generally slowly lost her mind. Nothing could satisfy her heat: she had tried toys, magical stimulation, hypnosis, mediation, yoga… She groaned, remembering that particular idea, and how disastrous it had been. Really, it was the yoga instructor’s own fault, he had been the one to insist she used the tight-fitting yoga pants. Not her fault the nose-bleeding and… blood redirection had made him faint like that.

Luna was distracted from her dark musing by a swirling puff of green smoke, the emerald cloud swishing through the open window to hover over her nose. With a loud *pop* a new scroll appeared out of thin air, falling into Luna’s waiting magic. She quickly broke the seal bearing Twilight’s cutie mark, spreading the parchment on her table, eager to get some answers. She was sorely disappointed.

“Deepest apologies...” Luna read, mumbling to herself. “Lack of time to research the subject while on earth…” Luna’s eyes were back to twitching. “Only thing I know is that horses can be found on farms… That’s it?” Luna exhaled loudly, leaning back in disappointment. The motion made her swollen pussy rub against her chair, and she gave a short surprised moan. The fire in her belly roared to life, demanding her attention. Now panting slightly, she hurried to scrawl a ‘thank you’ to her fellow princess, wincing when her insides clenched, her oozing cunt begging to be filled. She quickly sent the note back with a flare of her horn, and she almost threw herself at her bathroom door.

One extra cold shower later, Luna emerged with a sour expression, her mane still hanging wetly against her neck. She had half a mind to just lay in her bed with a tub of ice-cream and brood, until a glint of light reflecting on a shiny surface caught her attention. Still grumbling at herself, Luna stomped to her desk, shooting the photo a distracted glance, a shiver running down her damp spine. This photo was the cause of her sudden interest for earth horses: it was a vivid image, sharper than any photo Equestrian technology could produce, showing a human girl with a fiery red head riding on a fine specimen of Equine maleness. Celestia had sent her the photo alongside a letter, the alicorn gushing about her Sunset Shimmer growing up to become a hero, Celestia declaring how proud she was, hoping they could be reunited soon. Celestia had obviously hoped to distract Luna with the mystery that was Sunset Shimmer -was the filly her niece? She certainly looked the part, but Celestia never denied nor confirmed it- but Luna, in her heated state, had focused on something else entirely.

The horse was tall, his long legs powerful and strong, muscles rippling under his sweat covered coat. His mane was wild and unkempt, giving him a gruff look that no stallion on Equestria could hope to match. And to top it all off, the picture clearly showed a large pair of low hanging testicles frozen mid jiggle while he strutted, a long sheath jutting from his taunt belly. The fact that this fine specimen was just an animal in his world did nothing for Luna’s estrous crazed mind: her body only saw a stallion big enough to mount her, with a package clearly big enough to satisfy her, and balls plump enough to extinguish the fire in her belly.

Luna managed to tear her gaze away from the enticing sigh, just a little disgusted with herself; what would the papers say, if they knew their Princess got wobbly around the knees for an animal? But still, her curiosity was piqued. She didn’t know if it was her heat talking, but she found the horse’s gaze to hold a hint of intelligence, more than one would expect from a simple beast. Luna had asked for any precisions Princess Twilight could give her when it came to these horses, but the purple alicorn had never actually seen one of them, and her human friends had been understandably wary to give her much information about an animal so close to her original species, one humans treated as beasts of burdens. Luna scratched her chin; if her hunch was correct, horses could actually be intelligent beings, the humans willingly enslaving them, or, more likely, unable to recognize their language.

Luna had to be sure. Plus, this would be a perfect distraction from her heat.

Snorting resolutely, Luna shook herself dry, her mane billowing out to its usual ethereal volume. She stomped to her balcony, trying to ignore the first dribbles of arousal running down her leg, and she focused on her mission. She had been locked in her room for too long, it was time for her to stretch her wings, and finally feel useful again.

Luna took a running start and launched herself into the night sky, her vast wings catching a strong breeze; she had missed this dearly. She soared gracefully over the sleeping city of Canterlot, enjoying how the chill wind felt against her feverish coat, the full moon embracing her in its cool light. She grinned, momentarily forgetting about all her issues, and she banked towards the Everfree Forest.