As Luna’s moon illuminated the night sky, a figure wearing a skin-tight black bodysuit and mask that covered most of their face… save for two extra features, carefully snuck into Fluttershy’s animal sanctuary, spreading their wings as they silently soared over the resting animals with a surprising amount of grace, sleeve for one of their… stature. Glancing over their shoulder, her figure smirked under their mask as they carefully glided over a sleeping Manticore. "Hmmm… you’d be a keeper… but not for me today." The figure whispered silently, their eyes darting around the field and taking in the various sights around them. From a sleeping bear to a slumbering set of sheep, and of course… the location of their target for the evening.

They carefully landed on a nearby tree branch as they gazed down at one of the caves. ‘Mental note; thank Spike for those tips on silent gliding, makes sneaking into this area much easier.’ They thought as they slowly climbed down the tree, occasionally looking around just to make sure they hadn't roused any other animals from their slumber.

Thankfully, all seemed quiet and peaceful.

Letting out a sigh of relief, they made their way inside, their heart beating as she approached the depths of the cave... and the subject of her desire…

Resting near the end was a rather large dog with deep brown fur, and the most unusual feature: a second head.

An Othros.

The intruder nervously gulped as she slowly approached the slumbering twin-headed canine, its cute paws kicking as they dreamed away. Granted, they weren't afraid of the creature by any means, but they couldn't ignore the sense of dread welling up within their gut.

This would be the night... where she acted on her desires…

-----

It had all started when Fluttershy took their class on a tour of her animal sanctuary, lecturing them on various species, their usual diets, which habitats they could thrive in, standard animal care, and all of that stuff... honestly she'd dozed off a few times during the class.

However, what got her attention was when they'd been shown the two-headed canine itself. Granted, her interest was lowered when she was told the Othros was in no way related to Cerberus, but a different type of interest was sparked when noticed it licking itself. While the rest of the class had been led to the next area, she found herself lingering behind, her gaze transfixed on the canine…

Or more specifically, its nether regions.

The way its tongues glided over its hovel and balls, coaxing its shaft out of its sheath, the very sight of it made her blush uncontrollably.

And it didn't stop there...

Not long after the trip, she found her thoughts drifting back to that canine, the tantalizing image of its shaft occupying her thoughts, that massive throbbing member… pounding into her over and over and over... it was no surprise when she found herself wide awake at night, constantly pleasuring herself to that fantastical image. She wanted to feel that dog's member sink inside her... to be ravished non-stop by that beast... to finally satisfy her cravings… and for a good while it seemed her desires wouldn't be fulfilled.

That was until… her next trip to the animal sanctuary.

It had all happened in an instant, a Manticore had wandered into its territory just as her class had arrived. Well the two of them hadn't tussled much, it was clear from the scratches and bite marks on the Manticore that a scuffle had just begun, apparently over the two slabs of meat each head was holding in their mouths.

And as Fluttershy immediately broke the fight up and scolded both parties, that very display of sheer strength awakened something within her…or rather, reminded her of something important.

She was a Dragon.

And like the beast before her, Dragons didn't sit there longing for something, no. Dragons took what they wanted!

And she would get what she wanted… even if she had to exercise a little patience to get it. She had seen how that thing acted towards anyone other than Fluttershy, and while she'd finally worked up the courage to approach the Othros, she had to admit that what Ponies would call the “delicate approach” would be more effective here.

If she wanted things to go as smoothly as possible… she had to make sure that creature trusted her.

-----

The intruder was snapped out of her thoughts the moment the head closest to her almost instantly shot up, having heard her soft footsteps in the grass. The left, shorter head turned towards her and while silent at first their nostrils soon flared out as they sniffed the air, trying to place her scent. The second, taller head perked up and started to growl before its nostrils flared as well… and then both heads started panting heavily in excitement.

“H-Hey buddy, remember me?” The intruder asked in a nervous tone as she slowly took off her mask, revealing her orange scales, light yellow horns, and violet, hair-like spines. "It's me, Smolder." She smiled, reaching into her pocket and pulling out two doggy biscuits.

The twin-headed canine's eyes became alight with delight as they spotted the treats and happily scarfed them down. Smolder let out a sigh of relief, it had taken a while for the Orthros to determine whether the Dragon was a threat or not, but after a few visits, and a lot of dog treats, he basically greeted her as friendly as he would Fluttershy.

“That's it… gooood boys…” The Dragon smiled as she started stroking the top of the Orthros’ right head while scratching the left head's chin. The two-headed canine started panting, clearly enjoying this as he proceeded to roll over onto his back while wagging his tail. “Yeah, my claws feel much better than hooves, don't they?” She cooed as she started rubbing his stomach.

While the Orthros’ left head continued panting, the right leaned up and licked Smolder's cheek, earning a giggle from the Dragon. Casing a glance at the Orthros’ sheath, she unconsciously licked her lips and slowly reached down and gently started caressing it with her right claw, she could already feel the heat from the canine's shaft, firmly tucked away. ‘Okay… I'm doing this… I'm really doing this…’  She thought as she started stroking it at a slightly faster pace, with her eyes staring into the Orthros'

“D-d-don't worry, I'm gonna take this slow and easy…” Smolder whispered as she continued stroking, her whole body shivering in anticipation of what was to come.

All of a sudden, the dog’s right head leaned in and started licking her entire face, its tongue slipping right into her mouth before she could even react! She flinched at this, but quickly relaxed into it, leaning in and kissing the Orthros back, pushing her long tongue as far into the beast’s mouth as she could. 'Th-this… this is amazing…' She almost couldn’t finish her thought as her tongue started wrestling with the canine's as she wrapped her arms around the Orthros’ neck and pulled him closer to her, kissing and licking every inch of its mouth. Eventually, she pulled away and slowly turned her attention to the left head, Smolder then reached out and scratched its ears before eagerly licking its face and pulling it in for a kiss as well, with the right one licking her cheek. Smolder groaned in pleasure as she held the beast in a loving embrace, her breathing quickening as she slowly sank to her knees, breaking the kiss and gazing at the canine's shaft.

It was time.

Crawling down between its legs, Smolder eagerly reached for the dog's sheath again, stroking it sensually and slowly, her smile widening as she finally saw the tip of the canine's shaft slowly emerging from within, panting deeply she started stroking faster, eager to coax it out of its sheath. And the moment it fully emerged she couldn't help but smile at her prize, staring intently at the red, throbbing canine shaft, her eyes sparkling with delight. The scent was intoxicating, with the pheromones assaulting and shattering any shred of self-restraint the Dragon had left.

“O-Ok… here I go…” She whispered to herself as her long tongue slowly slithered out of her mouth, carefully lowering her head towards its hard, throbbing cock. The Dragon nervously paused for a moment, she was really about to put this thing into my mouth! ‘Can I really do this…? I haven't even done this to another Dragon!’ She thought to herself. However, at that very moment, Orthros bucked its hips forward, startling the Dragon and forcing half of its length into her mouth! The taste alone caused her eyes to roll back as her tongue touched the underside of its cock. ‘Mother of Torch! It's so hot and moist!’

Fully enticed by the taste, Smolder immediately started licking the length of the canine’s cock with her long tongue, slowly inching her head forward until its entire length was inside her mouth. ‘That’s it, I can't go back after this!’ She thought as she started bobbing her head up and down, mimicking the actions she’d seen in a few of Sandbar and Gallus’ “secret magazines”. Panting heavily, the Orthros started thrusting even harder, forcing more of its shaft into her mouth, this didn’t bother her however, and she continued bobbing her head up and down, pushing the canine’s shaft deeper and deeper until she was practically gagging on it. And yet, she couldn't keep her lips off the fleshy tip of the canine's shaft, expertly alternating between licking the tip and stroking the shaft with her long tongue, all the while keeping it buried completely in her mouth. 'So good... ohhh sooo tasty...' She thought as she felt the canine rocking its hips back and forth, growing harder with every stroke and even reaching its full length before she noticed it.

Smolder’s eyes widened at this, but she simply pressed on, licking the canine's entire length, all she could think of was the warm, tangy shaft between her lips, glistening with her saliva as she bobbed her head up and down, her tongue finding its way up inside the canine's sheath as it massaged the shaft. Her jaw quivered and her eyes rolled back as she felt the tip enter the back of her throat, causing her to gag slightly as she gently tongued the underside of the canine’s shaft, enjoying the taste as it pulsated in her mouth, her eyes focused inwards as the dog continued thrusting into her mouth. Her jaw ached a little, but she didn't care, the taste was so good, she didn't want this moment to end...

..and yet, as she felt the dog's shaft start to twitch within her mouth, she found herself eagerly anticipating the taste of the Orthros' seed. If his shaft tasted this good, she could only imagine what the canine's seed tasted like!

Then, as if reading her mind, the Orthros forced its entire length into her mouth, causing her to gag once more as the dog let out a high-pitched growl of pleasure. “Hhrrkk, gulk!! Grrkk!” Smolder managed to croak as the canine bucked its hips forward, shooting thick ropes of seed into her mouth, causing her to choke slightly as she greedily swallowed it all, despite her struggles.

And yet, she didn't stop, she couldn't stop, the taste was completely overwhelming, her entire body shuddering as she gulped down every spurt, just barely keeping her mouth from completely overflowing with the dog's cum. It was a little hard to manage, but she managed to continue sucking off the canine throughout the entirety of its climax.

After nearly a minute of this, the Dragon finally released the dog's sheath from her mouth. "Wow, that was… intense…" She gasped as she pulled away from the canine's shaft and let out a slight moan, her eyes slowly opening as she saw Orthros’ cock throbbing and glistening with her saliva, eagerly licking her lips. “Haah… this makes all those nights I spent sneaking you treats worth it…” She chuckled, her senses reeling as she wiped droplets of the Orthros’ seed off her lips with her left claw and tentatively licked it, shuddering at its salty taste.

“So that's why he's been skipping meals…” A new voice chimed in.

Before the Dragon could even react, a set of hooves wearing felt like gardener's covers were set upon her! One hoof wrapped around her waist and tightly pinned her arms and wings to her side while another roughly shoved a damp rag over her mouth and nose, a sickly sweet smell permeating her senses.

Smolder’s first instinct was to try and breathe fire on whatever was covering her mouth, however that quickly turned out to be a terrible idea when remembered a split second too late that she needed to inhale in order to do so. The chemicals from the rag immediately filled her lungs, quickly making the dragon even more light-headed than she already was, her vision swiftly becoming blurry to the point where she could barely make out anything in front of her.

"There we go.... sshhhh.... we don't want to wake the others up do we?" A calm and serene voice said with a giggle as she rubbed Smolder's head gently with her wing. "And besides Smolder… I think you might like the little gift I'm going to give you..."

-----

“So, did you enjoy yourself?”

Those were the first words Smolder heard as she regained consciousness. From what she could tell, she had been dragged deeper into the cave, and her claws and wings had been bound behind her back.

Her first instinct was to scream in rage at whoever dared to pull a stunt like this… however as her vision finally cleared up, Smolder could’ve sworn she felt her heart stop the moment she saw her teacher standing before her. “M-Ms. Fluttershy!?”

"Shh. You really need to learn to use your indoor voice this late, dear.” Fluttershy giggled as she whipped her mane back, giving the Dragon a nice view of her eyes… which seemed to have a rather mischievous gleam.

"I-I.... I don't understand how... please if this is some weird thing to punish me fine but please don't hurt me!” She quickly pleaded.

“Oh, there's no need to be scared, sweetie. If anything, I'm proud of you.” The Element of Kindness smiled as she trotted towards her student, her tone shifting from meek yet gentle to alluringly sultry as she got closer. “The amount you put in the effort to bond with the Orthros over the last few days was actually very sweet.”

“L-Last… f-f-few… days…?” Smolder repeated, her nervousness quickly giving way to confusion, followed by shere embarrassment as the realization dawned on her. “Y-You knew I was sneaking in and out of here?!”

“Be honest, did you really think I wouldn’t eventually find out?" She smirked with an arched brow, giving off a sassy demeanor that would make Rarity proud. "The Bats and Owls tend to spread gossip whenever I feed them.”

The Dragon mentally kicked herself for not thinking about that. “I… really should've been more subtle…” Smolder grumbled, only to blink in confusion. “W-Wait, so I'm… not in trouble?”

"Yes, you seem to misunderstand… you think I'm going to punish you, but instead I'm here to give you a wonderful gift." Fluttershy cooed as she used her right wing to keep Smolder's face focused on her.

"Forgive me if I find that hard to believe.” The Dragon scoffed.

“It’s true, my dear.” The Pegasus chuckled as the Orthros rushed up to her from behind the Dragon, both heads happily licking the mare’s face.“I mean, it’d be quite hypocritical of me to punish you considering I've… as Rarity would put it; indulged myself with these good boys more than once… isn’t that right sweetie?” She cooed, giving the canine's right head a gentle scratch behind the ears while rubbing the neck of the left one.

Then, Smolder could only watch with fascination in disbelief as her teacher opened her mouth and kissed the right head with little to no hesitation, allowing the canine's tongue to slip in and explore her mouth. ‘Mother of Lord Torch… my teacher's as big a freak as I am!’ She thought, her cheeks heating up she unconsciously rubbed her legs together, feeling a familiar sense of longing and envy as she watched.

"S-So wait, what… what EXACTLY are you planning to do…?" Smolder asked, interrupting the moment as she was much more confused than before. 

After what seemed like a full minute of tongue-wrestling, Fluttershy pulled away from the Orthros, their lips connected by a string of drool with a fair amount of it coating the Pegasus’ muzzle. "Well see, I know what it's like to… have a canine help you ‘discover’ yourself. So to speak.” She smiled as she reached down into a nearby saddle bag. “To let yourself feel free, and most importantly, I know you need that sweet, sweet release… it's because of that knowledge that I've lubed you up while you took a short nap." The mare finished before rising back up and turning to face the Dragon, now holding a red ball with straps on it.

Smolder's cheeks went bright red upon hearing that last part. “Hold on, you did what-mmmph?!” 

“Now now, there will be plenty of time to talk later, but for now… just relax…” The Pegasus whispered as she shoved the ball into the Dragon's mouth. “…now make sure to get that knot in there before it swells.” She whispered into Smolder's ear as she lifted the Dragon’s tail, her expression now one of pure, carnal lust and desire as the Orthros mounted her.

At that moment Smolder felt her pussy twitch, the very thought of the canine's warm cock giving her goosebumps, she'd never felt so wanted and desired before in her life. The Orthros' hot, pulsing member rubbed up against her slit repeatedly, causing her to quiver as she rocked her hips back and forth. ‘This is it... after so many days of dreaming about this, it's finally happening!’ Smolder moaned through her ball gag in ecstasy as she shamelessly grinded herself against its cock, the anticipation of having the dog's massive member penetrating her filling the Dragon with overwhelming lust and desire. 'Please... get it in there! Use me! Ravage me!' She mentally pleaded, spreading her legs apart to give the canine total access to her waiting hole.

After a few seconds, she felt something spreading her pussy lips apart, Smolder's eyes widened as the canine's throbbing cock slowly slipped inside of her, the sensation of being filled by the beast’s shaft just felt... so sublime. 'OH, F-FUUUUUUCK!' These were her first coherent thoughts as the Orthros immediately began humping her, pumping its shaft in and out of her quivering pussy.

'This… feels… amazing…' She thought, trembling in ecstasy as she squealed through the gag as her body started convulsing in ecstasy.

“Enjoying yourself?” Fluttershy giggled as she watched the canine's fleshy shaft pumping in and out of her student's dripping wet pussy, the sight of the dog’s shaft glistening with Smolder's juices making her feel a twinge of envy. But she held herself back. After all, this was Smolder’s night… and she’d earned this. “Just remember, despite how good it feels, it’s best to relax into the thrusts.” She pointed out in a more reassuring tone.

‘Aaah… s-so big… and the knot isn’t even inflated yet…’ Smolder thought, taking in slow and deep breaths as the claws of her feet dug into the ground, the sensation of the Orthros’ warm breath on the back of her neck and its cock sliding against her warm walls being a lot for her to process in one go. After another few seconds, she could feel the Orthros’ cock start pulsing, the dragon getting increasingly aroused as she squirmed and trembled in ecstasy. ‘Ooohhhh... Ahhh yes.. please… please don’t stop… it feels too good… I… I… Ohhhfuuu…’ The Dragon mentally whimpered, convulsing uncontrollably in response to the pleasure pulsing through her body.

“Haaaah…” Smolder let out a moan that was mixed with a pant, her hot breath wafting over her ball-gag as the Orthros pulled its dick out as far as it could before thrusting back in, the sensation making her body involuntarily shake and her hips jerk as she eagerly bucked her hips in response, the dragon's vaginal walls tightening around it in an attempt to take the entire thing inside of her. “Aaahhhh…” The Dragon sighed as the Orthros started pumping harder and faster.

And yet, this was just the beginning...

The dragon's eyes widened as the sensation suddenly changed, the Orthros' movements becoming more forceful and quicker as it started thrusting harder and harder into her, making sure nearly every inch of its cock was buried within her. 

Having noticed the Orthros’ movements begin to shift, Fluttershy realized exactly what was happening and casually approached the two, smiling softly as she leaned down and softly whispered into her ear. “You may want to brace yourself for what’s coming next…” She cooed in a seductive tone, pulling back as the dog’s shaft started to swell near the base, getting bigger and bigger as it kept thrusting as hard and fast as it could go.

Before Smolder could even ponder on what her teacher was talking about, her thoughts were interrupted by a near-instantaneous feeling of discomfort, her loins feeling as though someone was trying to shove a baseball, or at least something about that size, inside her. ‘W-Wait… is this that 'knot' I've read about!? Mother Of Torch… it's fucking huge!’ She thought, her heart pounding and her mind racing as she realized these more forceful thrusts were the canine's way of trying to force it in!

Eventually, its knot grew big enough to the point where it wasn’t able to push his cock all the way in with its quick hump thrusts, with its knot slapping against her pussy lips and thighs. “Rrggghh?!” The Dragon groaned out in lustful frustration as she could feel its knot strain and bulge as she continued to force herself to relax, even with the excruciating feeling of the walls of her pussy being stretched to their limit.

The Orthros then pulled its cock out of Smolder one more time… before slamming its hips down and pushing into her as hard as it could, the canine's knot kissing her pussy lips once more before finally being forced into her! “Aaaahhhnn!!” Smolder let out a yelp of shock and pleasure, a new wave of pleasure rushed through her entire body as the Orthros' knot, having now swollen up to full size, popped inside her!

‘So big! S-Sooo thick!! SO FUCKING GOOOOOD!!!’ Were the Dragon's thoughts as her eyes rolled back as she arched her back, letting out a high-pitched squeal of pleasure as the knot filled her pussy, causing her to spasm once more convulse in bliss. ‘Ahhhhhhh, it hurts… but it feels so wonderful at the same time!!’ She thought as she panted in an almost exhausted state, barely able to keep her focus on her mind, having gone numb from the pleasure she was feeling. ‘It feels so good inside me!! I'm getting a fucking dog inside me! It feels soooooo good! OHHHH YESSSS!!’ The Dragon quietly moaned as it kept thrusting back into her, her hips thrusting back and forth in response.

Wet noises echoed throughout the cave as it slid in and out of Smolder’s cunt, the canine's balls slapping against Smolder’s rear as it pumped its knot in and out, forcibly stretching out her pussy without slowing its pace. Smolder didn't even know the dog could move its hips that fast! And it just kept hammering away, slamming her cock into me like an out-of-control jackhammer.

‘Oooohhh yeah! Fuck me, fuck me, fuck me fuck me, FUCK ME! Fuck me hard and fast, make me cum!’ Smolder thought, drooling through her gag.

Her head was spinning, and it felt like her pussy was on fire…

But it all felt so good!

After another minute, the Orthros thrust inside of Smolder once more, both heads howling as thick, white streams of its seed gushed forth from its cock into her pussy, the feeling sending her body into a fit of orgasmic bliss. ‘Oh I love this, it's better than I ever dreamed it would be! Y-Yes, oh yes! Do me, fuck me! Fuck me, harder-ooohhhh!!’ Smolder thought, letting out a high-pitched shriek through her gag. Her legs and knees started to shake uncontrollably as her climax washed over her like a tsunami, her vaginal walls squeezing around the shaft and knot as if it wished to milk every drop of cum out the Orthros’ member as it pumped its load into her! ‘It feels sooooo good inside me! GOOOOOD! OHHHHH!! FUCK!! I'M GONNA CUM!! I'M GONNA CUM!!!’

Another wave of pleasure shot through her body as she finally came, arching her back again while her pleasure juices sprayed all over the dog’s cock, the knot keeping their fluids sealed inside her womanhood. “Aaahhhh… Nnnnn… Rrrrggghhh!!!” Smolder groaned out, the sensation of the canine's cum flooding into her making her shake violently once more, spasming underneath the canine as it continued to pump its seed inside of her.

‘F-Fuck… feels… so… good…’ Were her final thoughts as her entire body went limp, whimpering in pleasure as she finally came down from her climax and her eyes rolled back into her head, the Orthros jerking inside of her one last time before finally releasing her… leaving her breathless and her body dripping with sweat.

“Rarity was right, you Dragons have a surprising amount of endurance…” Fluttershy mused as the Orthros slumped down on top of the Dragon, falling asleep. Noticing that her student was no longer moving, the Pegasus simply leaned down and carefully removed the ball gag. Smolder let out a blissed-off sigh and started to breathe heavily as the Orthros' cock slowly deflated within her. “You did well sweetie.”

“Oohhh… s-so… big…” As she slowly came back to her senses, Smolder gasped for air as the dog’s shrinking knot slipped out from her pussy, shuddering as every drop of cum leaked out of her pussy, which has been stretched beyond what she thought she could handle. “Cuh… could you… get the dog off…? I… it's… sleeping on me…”

“Well, I'd like to… buuuut, you did still trespass on my property.” Fluttershy pointed out before pressing her forehead against Smolder’s and giving her a seductive smile. “So as punishment, you'll be spending the night with him… and fair warning, he gets rather horny in the morning. So you better be ready for a morning romp!” She giggled before grabbing the Dragon's cheeks and giving her a gentle kiss on the lips. After which she spread her wings and flew towards the cave exit “But if you're ever in the mood for some ‘Extra Credit’, don't hesitate to stop by~”

“Huh… b-buh… but I-” Smolder murmured in protest, only for both of the canine's heads to lean down and nuzzle her cheeks affectionately from both sides. Too tired to even bother trying to pull herself free, she simply closed her eyes and gave both heads a gentle kiss on the cheek. ‘Meh, worth it…’