---
title: Trouble Sleeping
pubDate: 2023-09-20
authors: bad-manners
wordCount: 4800
contentWarning: >
  Contains: Non-fatal size difference unbirth, with asleep female anthro wolf pred and willing male feral sparrow prey. Also includes straight sex and accidental long-term endo.
thumbnail: /src/assets/thumbnails/stories/bm_13_trouble_sleeping.png
description: |
  An aflutter sparrow can't get any rest, and seeks an unconventional refuge in his lupine crush.
posts:
  eka: https://aryion.com/g4/view/934726
  furaffinity: https://www.furaffinity.net/view/53740766/
  weasyl: https://www.weasyl.com/~badmanners/submissions/2305405/trouble-sleeping-vore-story
  inkbunny: https://inkbunny.net/s/3124166
  sofurry: https://www.sofurry.com/view/2051787
  sofurrybeta: https://sofurrybeta.com/s/qmywZjQ1
tags:
  - unbirth
  - anthro predator
  - feral prey
  - female predator
  - male prey
  - asleep predator
  - willing prey
  - size difference
  - long-term endo
  - straight sex
---

Cantaloupe couldn't sleep. Even puffing out his feathers didn't really help the sentient sparrow beat out the cold that came from the air conditioner. Or maybe something else was still keeping him awake. He looked around from his perch, city lights sneaking through the blinds to reveal most outlines in the larger room. His attention was turned to the anthro wolfess, sprawled out on her bed with her belly up.

It was hard to make out Baasa's long brown and black coat – but even in this darkness, her silhouette was gorgeous. Or so Cantaloupe thought. The wolfess was fully naked, her whole body exposed on that mattress. The sparrow had no idea how the recycled cold air didn't bother her, but she clearly prefered it over the summer night heat. Cantaloupe noticed her perked-up breasts on her chest, and the slow sway from her quiet breathing. Baasa wasn't making any noise, but the heavy sleeper was still part of the reason why Cantaloupe couldn't fall asleep.

After so many years of being just a talking wild sparrow, he had started to visit Baasa's porch whenever she set out seeds on the feeder. Eventually, she made contact, verbally and physically. And the feral bird replied, to her initial surprise. He'd come back day after day, and she'd named him Cantaloupe. He really enjoyed her company – and her beauty –, so much so that the wild sparrow decided to live with her on a whim after she offered it.

Truth be told, Cantaloupe had been having feelings for her for a while now. That's why he'd accepted it so fast. He knew that he should've been looking for a mate of his own species, but he was too taken by Baasa to care – yet too embarrassed to admit it. Unfortunately for him, his non-verbal fondness for her somehow didn't go unnoticed by the wolfess, and earlier today, she'd done the thing that Cantaloupe had feared the most: She'd asked him directly about it.

"W-What? No! W-Why would you think that...?" He had deflected with his chirpy voice.

"Aw, but it's obviously true, Loupe!" Baasa had replied on the occasion, using the nickname that always made his heart flutter. "It's clear how flustered you are, especially when I take off my clothes inside my room."

"B-But I don't get flustered when you–...!"

Of course, she'd chosen that very moment to undress herself right in front of him. Quickly dropping her buttoned shirt and undoing her bra, as Cantaloupe watched with red cheeks hidden under his feathers. Then pulling down her dress pants just as easily, blurting out some excuse about the torrid weather... The sparrow tried to avert his gaze, but couldn't. There was that slight shift in his cloaca whenever he got a glimpse of her vulva, but he concealed what was between his legs against the perch as best as he could – while Baasa had no discretion about showing off her legs, and everything else that it entailed.

"See? Crystal clear!" Her tone as she spoke was happy, but Cantaloupe hadn't felt like there was malice or mockery towards him. "Never thought that a tiny bird would take an interest in me in that way."

If he recalled it, the sparrow had no good counterpoint to make, so he'd deflected her argument altogether. "...I-I'm just too tired to think properly, that's all."

"Aw...! Did you have trouble sleeping tonight again?"

He had been surprised by Baasa's sudden concern. "Oh! Uhh, w-well... Yeah, actually. Your room was too chilly."

"Why didn't you say so?"

"I tried to! ...But you're a very heavy sleeper." Cantaloupe'd chittered under his breath. The wolfess had offered her clawed finger to him, and he'd reluctantly climbed on it with his small bird feet, once he'd been sure that his male bits were no longer on display.

"Well, if you still wanna sleep with me, then I can try to turn the AC down a bit tonight!" She'd promised, but the reminiscing sparrow didn't think that her room was any less chilly tonight. "But I still need it on while a sleep. I can't handle this weather, and I still have my winter coat until I get used to it."

"I-I do wanna sleep in your room, with you..." He'd admitted as Baasa had brought her finger closer to her face. "But what if it gets too cold to sleep? And I can't wake you up yet again?"

The wolfess had thought for a moment, and then had spoken softly as she blew warm breaths from her large snout onto the tiny bird. "What if...you slept inside of me, Loupe? Then you'd feel cozy!"

His initial reaction had been shock, of course. "Y-You can't be serious...like, inside your mouth?!"

"No, not my mouth, silly! You're so small that I'd probably accidentally swallow you." Baasa had answered happily, without any hesitation. "I was thinking more like my vagina! I'm sure you could fit just fine at your size, even if I'm not awake."

...

Cantaloupe couldn't even recall how the rest of the conversation had gone; just that the rest of the day had been awkward between them. Well, mostly awkward from his side. Baasa had been as cheerful and shameless around him as always. But he couldn't get her words out of his head. Would she really...? Could he really...?

And those thoughts were what kept him awake, more than the cold or anything else. He'd had a crush on her for a while now, but he knew that conventional sex just wasn't possible at their difference in size. But for Baasa to offer something so private and intimate like letting the bird crawl up her vagina – even giving him permission to do so as she slept...! It felt surreal, but those words wouldn't stop ringing in his head. As if something had awaken in the little sparrow.

Taking some deep breaths, Cantaloupe mustered up his courage and gently flew to Baasa's bed, landing on the pillow. Even as he stood right next to one of her large fluffy ears, he could feel some of the dissipated warmth from her dark-hued coat. But even if he snuggled right against her, it wasn't enough warmth for him...

"Hey." He spoke quietly in his late night voice, before switching to a louder tone. "Baasa. Are you awake...? It's me, Cantaloupe. And I just can't sleep w-with this cold."

Nothing, not even a sleepy grunt in response. He brought his beak down to gently peck at her furry ear, seeing if she would even stir from her slumber at the slight prickling, but she was out cold.

"L-Listen, I... I thought about what you said. And I'll do it. I'll climb inside of your v-vagina to get some warmth. Is that o-okay with you...?"

Baasa let out a sharper exhale, but not so much any other reaction or indication that she could be awake. It was hard to tell in the dark, but her expression seemed so serene and peaceful. The restless sparrow was jealous. Hopefully, he could finally get a good night's sleep very soon. But that still entailed going through with his plan – or rather, her plan. He felt agitated, but it wasn't just from sleep deprivation.

Cantaloupe climbed up on her shoulder. He was light enough that his feet barely sunk down into her fluff. There was so much of it on her chest, let alone her whole body. No wonder why she felt the need to make her room so chilly every night to be able to sleep. The bird personally disliked the big white box on the ceiling that turned the air cold, although he didn't understand how an AC unit worked. And this was Baasa's house, after all. He was simply living with her as her little companion. Or her 'pet', like how she'd called him once, before having to explain the meaning of the word, to his embarrassed dismay. But from what he'd gleaned, a pet wasn't supposed to simply go inside of its owner's body, right? Or to be so attracted to them...

But that thought didn't discourage him. He threaded her fur carefully, blushing on his cold feathery cheeks as he had to walk over one of her breasts. He'd never thought that he could be so attracted to mammalian anatomy, until he met the lupine. Maybe his attraction to her wasn't the same as what a male wolf would feel, but he couldn't deny how obsessed he was with the beauty of her body along with her personality. When he wasn't looking at her naked body, he often caught himself daydreaming about it. About touching her boobs – exactly as he did now with his feet, calmly making his way on her dark fur, as he took measured steps on the chest panning up and down.

The sparrow stopped at the highest point, right on her furless areola. Her firm breast completely ignored the weight from his feet planted atop. The whole perky mound and its twin were each bigger than his entire body. It only dawned on him when he touched them now, for the first time. Baasa was much bigger than him...

The ideas rushing through his head made his thin pink cock poke out from his cloaca. To think that the large and gorgeous wolfess would be his mate... Was that the appropriate name, 'mate'? What she'd agreed to do was sexual, after all, there was no denying it. But it was so different from anything Cantaloupe had done before. He'd had other mates – sparrows, all of them –, but everything, from their species to their size, to the very nature of their attraction, was completely different from what he was experiencing and feeling right now atop the slumbering lupine.

Cantaloupe paced around the slope of her breast, careful not to slip as he made his way to nestle against the extra fluffy underside of her chest. Even the outside of her body was warm, maybe even warm enough to sleep under, if he hid fully between her silky fur like a blanket... But there was the risk of getting crushed. Besides, he wouldn't be able to sleep with the swarm of thoughts in his head. The stiffness between his avian legs was proof of that.

As much as he wanted to nuzzle against Baasa's breasts all night long, he only had one goal in mind, one curiosity that he just had to sate. Cantaloupe stood up again and, admiring each inch of his diva under the very dim nightlight in the room, moved across her belly. He had his sights on her legs, and made his way towards them. Was he truly just moments way from being on the other side of her skin...?

Her midriff had a slight slope downwards, and after nearly tripping on her navel thanks to the darkness, he stopped when he was a few steps away from a drop to the bed. His heart was racing, as this was the closest he'd ever been to her nethers. He could see a pink protuberance at the top, but her lower lips were closed. Her vagina was further up her body than he'd expected, and Cantaloupe would have to carefully climb in from above rather than safely from below. He'd have to twist at a weird angle, which didn't give him much confidence, but he was undeterred.

Without fingers to pry it open, Cantaloupe brought his short beak to the entrance, lining it along the slight seam on her labia. He'd forgotten to take the smell into account, and instinctively pulled his head back before he had even started to push into Baasa's vagina. The sparrow looked back at her face, but she seemed completely undisturbed. Was she really going to be asleep through all of it...? Hopefully not, or Cantaloupe would feel embarrassed about being too small to even elicit a reaction as he trudged through her sensitive bits.

Mentally prepared for her smell this time, he tried to nudge her labia open once again. Cantaloupe was surprised at how easily he could spread them, though the vaginal muscles put some resistance as they tried to clamp back shut around his beak. Still, this plan seemed doable, and the sparrow slowly felt around at her flesh in search of the entrance. Now that he wasn't immediately alarmed by it, the aroma from her vulva was full-bodied and sweet. Almost intoxicating, inviting... Most importantly, it looked like the coziest spot in the whole room, and he'd be closer to Baasa than ever. His pink cock twitched again in excitement, its tip getting somewhat leaky.

His beak couldn't feel the entrance, and so he meekly dragged it along the unseen interior, further away from the clit. Cantaloupe would've loved to explore her love button, and see how she reacted and squirmed as he tried to pleasure her, but that would have to wait until she was awake. Right now, the cold air ruffling his feathers reminded him of his most pressing need, and he looked for any give inside of her vulva. It was hard to see it as it followed the curvature of Baasa's crotch, but the whole slit also seemed taller than him. The only indication of how close he was to his target was her alluring smell, which grew stronger as he gently pecked her lower. The lack of any reaction, save for the gentle breathing, made it easier to traverse the strait.

Finally, he felt the soft wall at the back funnel inward, and his beak reached inside until half of his face had pushed through. He'd found the entrance...! It was exhilarating, finding out that her tunnel opened for him so easily. And terrifying, realizing he could still push his beak deeper. It didn't feel like the opening had an end, but of course it must have had one... One that was supposedly far away enough that all of him could fit inside of Baasa. That was the goal after all, he reasoned – no point in seeking refuge in her vagina if any part of him was still exposed to the cold. And despite his tiredness, Cantaloupe was more than eager to explore.

Leaning further forward, he pushed more of his head between the parting lips, until his eyes sunk into her warmth. The soft flesh got wrinklier as more of it brushed his face feathers, and her smell grew stronger. The sparrow couldn't help but open his beak, instinctively hoping to get fresh air through his mouth instead of his nostrils, but inadvertently getting a taste of her walls. Baasa's flavor was earthy and almost rusty, giving his tongue an enticing breakdown of her pheromones. It was hard to describe, but it felt very...Baasa-like. As if it could only have come from the wolfess. The immediate reaction from his taste receptors was that this came from a predator – but instead of danger, Cantaloupe simply felt more arousal. The sparrow nudged his tiny round body forward, slipping more into the naturally slick walls. It felt like being devoured, except that he was the one making it happen, and it didn't escape his mind that he could leave at any time.

With a single path, it was easy to figure out where to guide his beak, but Cantaloupe had to turn his head upside-down as he entered from above. His feet gripped her crotch for balance, clinging to fur in order to avoid scratching her skin. His tail was raised high, and Baasa would've seen his cock fully outside of his cloaca if she was awake.

At the same time, Cantaloupe realized that his angle was less than ideal, and he'd lose his footing if he pushed in any further. It wasn't like he had much choice, coming from the top made the most sense. But he could only hope that he'd fall inside of her, rather than having to start all over again after slumping down on the bed, half-covered in her juices.

Since his wings were pinned by the folds at their joints, they couldn't help him here. He lowered his body, shivering as he felt his cock smoosh against the cushiony clit, trying to line up his small body along the slight gap between her vulva. He was as prepared as he could be. The sparrow pushed his feet back, leaning his body forward as he tried to burrow his short neck further in. His heart skipped a beat when his lower body flicked into the air, like a pendulum that was about to fall the wrong way...but it sunk inside instead, and Cantaloupe flopped onto his back as the opening slurped most of him into her grasp.

It worked...! Only his feet and tail feathers stuck out from her slightly ajar labia, but he was already surrounded by warmth and darkness. No more of the dim suburban lights peering through the blinds, and the only sound was a distant heartbeat that masked the constant airflow from the AC unit in Baasa's room.

It was surprisingly cozy between her folds, enough that Cantaloupe could sleep like this...but he wouldn't. New thoughts rushed through his head, now that he was almost completely enveloped by his crush. The little bird climbing into her vagina had done little to stir Baasa from her sleep, it seemed, so he could call it a night right there with his little success. But Cantaloupe had a new need to fulfill, one that only got stronger as he felt the wrinkled canal brush against his concealed erection.

He wanted to impregnate Baasa.

Of course, it didn't make sense from any logical standpoint. Not only were they from completely different species, so much so that he could easily squeeze himself into her vagina. Nonetheless, he was still overcome with the urge of mating her, and wanting to have Baasa lay his eggs. A primal instinct, as it were. The normally timid sparrow would've kept it in check, if his whole body wasn't reacting on gut feeling at that moment. The smells and sounds of the wolfess put his whole mind on high alert, shaken by the overwhelming presence of a predator, but his body translated all Manner of panic into arousal instead. And Cantaloupe sought more of it. He needed to mate with her.

With lustful haste, the sparrow tried to turn around, pushing his wings against her fleshy tunnel to get onto his feet. Despite their softness, the slick walls still brushed his whole body, and he gasped at the sensations of the wolfess's vagina caressing his thin shaft. His pre pushed out from the pointy tip and dribbled onto the walls, but Cantaloupe kept his arousal in check. He still wanted to 'breed' her, and he'd fail to do so if he didn't keep his arousal in check and climaxed too soon.

Finding unsteady foundation under his feet, the sparrow marched forward, drilling deeper with his beak as he inhaled the stifling sensual aroma of Baasa. His claws were carefully placed down with every step, as to not pierce her sensitive flesh. Cantaloupe had no guilt about seeking sexual gratification. Despite his constant denial, the wolfess had known that he'd had a thing for her. That very morning, she confronted him about it – and right before offering her vagina as a makeshift bed. She was a smart girl, and would've expected him to not squander the chance to enjoy himself while he was in such a special place.

Now a soggy ball of feathers, Cantaloupe pressed on, even after his tail feathers had slipped through the entrance. Fully sealed into his crush's most precious bits, he worked through the tunnel that offered him very little resistance. Baasa hadn't even moved an inch in her sleep, but he didn't care about it anymore. Cantaloupe wouldn't allow himself to be separated from her until he'd fulfilled his self-assigned role as her mate. Like trudging through swampy mud, his feet sank and tripped on her wet wrinkles, every neuron in his body screaming to go further. At the end, he expected, the sparrow would find singular bliss. His greatest, newly discovered dream would soon be realized.

It felt like the path wouldn't end, though he'd only taken less than a dozen steps. Each one was slow and arduous, and he could've fallen asleep from exhaustion – if his libido wasn't pumping adrenaline through his veins. Her walls seemed wetter, though it simply could've been the built-up juices dragged along with his feathers. Baasa's smell was on his whole body, and the sparrow was deeper in her than he could've ever imagined possible – which, until the thought crossed his mind this morning, admittedly wasn't very far. Regardless, the end couldn't be much longer now. Cantaloupe would reach her cervix, a wall that'd serve as a cozy spot to finally get his release in just outside of her womb...or so he thought.

He felt his beak get snagged in the wolfess's flesh, though given his whole journey, it was par for the course. But it was narrower and smoother than the flexible wrinkles, unlike the rest of Baasa's canal. And yet, his avian mandibles found their way through the funneling ring. More than that, it felt like it was _pulling_ him in! Could this really be her cervix tugging at him...? Cantaloupe wasn't sure if this was a lust-driven hallucination, but his last expectation had been torn down. Sphincter or not, he'd keep on trudging inward, as deep as Baasa's recesses would welcome him.

It was definitely a tight squeeze, even with his feathers drenched beyond recognition in natural lubes. It helped that her vagina tried to bring Cantaloupe in with the roll of its muscles, almost as if the opening sprung outwards around him like an elastic band. But it was too dark and chaotic to really grasp what was happening to him. Despite the incessant squelching and the ambient heartbeat, Cantaloupe's ears were filled with the sounds of his own gasping, expanding his lungs with what little oxygen he could inhale along with her ambrosial juices. He couldn't tell if he had any footing; the sparrow's wings were immobilized against his body; his beak was too short to reach for anything but humid air. Despite his vain attempts, he tried to wriggle deeper, as much as his tiny body could muster.

Like every other sensation coursing through his body, Cantaloupe couldn't tell if he was actually making any progress whatsoever, until something other than smooth or creasy walls brushed against his face. It felt like a bunch of tiny, short, and unmoving tendrils, extending all over the place that expanded outward to make room for the sparrow. The ciliated organ pulled him deeper like a vacuum – or perhaps the vagina ejected him into the womb. It was hard to tell where the pressure came from. But the results were unmistakable, and the bird was pushed out of the tight passage in no time.

From all sides, he was greeted with a field of squishy buttons. Intended to hold and nurture a fertilized egg cell, the protrusions now held Cantaloupe closer to his lover than he ever could've wished for. To him, this was Baasa's sanctum, the utmost symbol of her femininity and fertility. And the needy bird, who'd long been overdue his release, finally let himself loose, his cum indiscriminately flooding against the wall that his cock was snug against. He'd finally copulated with the wolfess, the greatest love of his life...! Or did he? Everything was too blurry and confusing, he could barely even tell if he had orgasmed... Only that he felt bliss unlike ever before.

Cantaloupe could've shaken violently in ecstasy, if his whole body and mind weren't so spent from tiredness and relief. He only spared the energy to buck his hips forward even after he'd supposedly climaxed, fully enveloped and fastened by Baasa's uterus.

"B-Baasa," Cantaloupe whispered out in a bleary breath, "I–"

But before finishing his confession to the asleep lupine, he passed out from exhaustion.

...

The sparrow would only wake up several hours later. He'd finally gotten a much belated and needed night of sleep, but he still felt physically tired and mentally disoriented. Cantaloupe only saw darkness when he opened his eyes. He was still completely surrounded by endometrium. Instead of remembering what he'd dreamed of, his mind was full of recollections from last night, of going into the wolfess and disappearing between her folds as deep as he could go. The uterine mucus squelched around his round body as he shifted. His feet brushed against the smoother flesh at the bottom, her cervix. His claws couldn't find any opening. It was closed shut. But Cantaloupe felt safe, and didn't have any reason to panic. He'd grown accustomed to the heavy atmosphere overnight, and could breath the earthy air just fine.

Something else seemingly stirred outside. He imagined that Baasa was finally getting up, and her yawn echoing through the organ all but confirmed it. How long had she even been asleep for...? His surroundings all changed direction at the same time as she sat up, but the ciliated walls kept him snugly in place. Cantaloupe had a blush on his face when he felt the walls cupping his cock, revealing that he was getting erect again.

"Mm...good morning, Loupe." Her groggy voice sounded deeper to him, but just as sweet. "...Loupe?"

"H-Hey! I'm right here!" The sparrow chirped as loud as he could from the nestling organ.

"Where are you, Loupe...?" The source of her words seemed to shift around from above, as if she was turning her neck to scan her room.

How could Baasa not realize that he was in her -womb-, of all places...? Cantaloupe writhed inside as he called out her name, only getting more aroused as he felt how close he really was to her – close enough to rub his precum-leaking cock against her uterus at every turn. Then, the sparrow felt pressure from one of the walls, not unlike a pair of the lupine's large fingers.

"Oh! There you are! I didn't think you'd actually take that suggestion seriously!" The wolfess poked her midriff, completely amused and unconcerned. "How deep are you in my vagina...?"

"I-I'm in your womb, not your vagina!" Cantaloupe tweeted out, struggling to move against Baasa's gentle but onerous patting. "I think I'm stuck! Y-You need to get me out somehow!"

Her next words caused his heart to sink. "Hmm...you're so quiet in there. Maybe you're still asleep?"

Cantaloupe couldn't believe it. His tiny screams fell on deaf ears. Baasa could still feel him, but her insides were so desensitized that the wolfess couldn't even tell just how deep the sparrow really was. In truth, he wasn't too desperate, since it appeared basically impossible to get hurt between her soft walls, even as they crushed him underneath her prodding fingers. But he was still trapped in her, thanks to his own lust-driven hubris from last night.

"Well, enjoy your nap in there, Loupe!" Still upbeat, Baasa whispered her words, though they resounded just as loudly and deeply all around him. "I'll pull you out after you're rested up."

He squirmed some more, but she must have barely felt his disgruntled wiggles under her long-furred belly. She simply released her fingers and got up from bed, going about her day as usual, each step making a perceptible thump and bobbing him up and down slightly in the cradling chamber. Baasa must have imagined that everyone was a heavy sleeper like her, Cantaloupe included. He tried again to get her attention with as much wriggling that he could manage, but other than some giggling from the anthro, there was barely any reaction.

He slumped against the warm endometrium, realizing just how little energy he had. Despite shielding him from the cold, the constant squelching embrace of Baasa's uterus hadn't left him as rested as he would have expected. It likely had the opposite effect, keeping him half-awake through the whole night; alert about the harsher environment that he was in, and aroused by the stimulation of the cilia on his exposed penis. Maybe he had some recollection of his sleep being disrupted... But he was too tired to think. And too tired to fight against extending his stay.

Of course, freedom wouldn't come from simply 'pulling him out' as she said. Eventually, the wolfess would realize that he was stuck too deep – at least, he hoped so. His eyelids were too heavy, and Baasa's humming voice was too soothing. Despite his conundrum, he had nothing else to worry about, and that gave him some piece of mind. Cantaloupe wasn't concerned that the lupine would harm him somehow. Isolated from the world, he felt safer than ever. And snug within her intimate womb, he felt a greater connection to Baasa than anyone else. He was happy enough that he could chirp a song, but another restless slumber took hold of him before he did.
