-ZOO- A Birthday To Remember - Chapter One -

Story by Cederwyn Whitefurr on SoFurry

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As non-identical twins, they share a bond not only of sisterly love - but a deep, irrevocable mental one. What one sister feels, so does the other - in all things. When their night out takes a turn to the unexpected - their sisterly bonds will be sorely tested...


A Birthday To Never Forget

© Cederwyn Whitefurr

2nd April, 2023,

All Rights Reserved.

Like what I write? Want to support me? Patreon.com/Cederwyn

Cassie and Kelsie were arm in arm, the two non-identical twins were of one mind. They'd been drinking, celebrating their mutual 21st birthdays and having a time and a half of it. Stumbling down the road – tipsy, but not drunk – just high on life and living it to its fullest.

“Urgh," Cassie grumbled. “Less than a week and its back to the plough again."

“Hah, equine joke, I get it – so, how is that Animal Husbandry course going? I hear that beautiful stallion really has a liking for you!“ Kelsie snickered.

“Its not like that – He's a..." Cassie blushed. “He's a gentleman and a sweetheart..."

Kelsie held her arms apart, a good two or more feet, then raised an eyebrow. Cassie blushed worse, then held her hands about three and a bit feet apart.

“Oh...my..." Kelsie gasped, staring wide eyed. “Really?"

Cassie blushed worse, then nodded. Distracted, Kelsie's eyes widened, then she grabbed at the wrist of her beloved sister.

“Huh, wha?" Cassie murmured, dragged to a halt.

“When did that open up?" Kelsie asked, pointing across the street.

Her fingers pointed at a bright, eye-grabbing sign, the customers lined up willing and eager to try this new club out.

“Oh, we'll never get in - “ Cassie sulked. “That's a new, hip place, only the cool people go there, it opened like last week and... hey!"

Kelsie laughed and dragged her reluctant sister along, as they awkwardly stumbled/ran across the street amongst the break in traffic.

“Kelsie, no!" Cassie protested. “They'll never..."

“Trust me," Kelsie grinned from ear to ear, her smile making her sibling smile in turn.

As they approached, a large man in a tight fitting suit gave them a quick once-over, then stepped aside, opening the rope.

“Evening ladies! Welcome to The Aurora, guaranteed to change your life and your experiences!"

“Umm..." Cassie stammered, blushing. “What about..."

Come on..." Kelsie snickered, dragging her sister through the rope barrier and into the club. “What possibly could go wrong..."

*

Kelsie shuddered, her head feeling like it was splitting in two, nausea clawing through her entrails as she slowly regained consciousness.

Ow...what's...did I fall asleep on...

Kelsie's eyes were like leaden weights held them closed. As she moved, then suddenly, her eyes slammed open like wind-blown shutters.

What the hell?

Kelsie found herself laying on straw – old, golden and dry. Her eyes refused to take in what they saw – her field of vision wasn't right!

Cassie!" Kelsie shrieked – or so her mind told her... what her ears heard – was a loud whinny.

No, no, NO... Kelsie shrieked silently in her mind. No, I can't... it's not possible...

Squeezing her eyes closed, Kelsie shuddered and re-opened them – only to be confronted with the harsh truth...

She was now a beautiful chestnut coloured mare...

A squeal and a whinny from the next stable over startled her, and she stumbled awkwardly to all four hooves, before she stumbled and fell, landing heavily.

Cassie!" Kelsie shrieked again.

Again, that terrified whinny come from the stable next to her. Something, something indefinable, that sibling bond they'd shared in the womb and throughout their life, flared back into existance – in a whole new and different way...

“Cassie? Can you hear me?" Kelsie yelled – or thought she did, all she heard was a loud, long whinny.

“Kelsie?" Come the answering squeals. “KELSIE! What happened, where – how... I'm a fucking horse?"

Kelsie shuddered, struggling back to her hooves again, and hearing the clattering and grunting from the next stable. With supreme effort, Kelsie got to her hooves, spreading her legs out as far as she could to support her new equine form.

“Kelsie? Please, please wake me up! This is a dream, a terrible dream, its got too - “

Kelsie's voice went silent, as both mares tubular ears slashed backwards, hearing the quiet clip-clop of hooves approaching.

Kelsie, please, wake me up... Come the mental link that all twins shared.

Be strong sister, Kelsie sent back – feeling through the bond they shared, her sisters fear and rising stress. It's a dream, someone spiked our drinks, we're alright, I promise, its... all okay, someone will come and...

Kelsie was the first to see it, the broad nostrils, the dark brown fur that ran up the muzzle, the single eye that widened imperceptibly as the ears flicked forwards.

Oh, thank the Gods – Cassie thought to herself_. It's just another hor..._

Her head, twisted back over her broad chestnut back, went wide like a full moon, as she seen a dark furred hand reach up, then the other one – the hand leading to a gloved forearm, then up over the biceps which were a rich dun colour.

“Aren't you just a beauty?" Come a deep, masculine voice. “When Alfred said he had some real stunners – he wasn't kidding!"

Kelsie stared, her muzzle hanging open, ears frozen in place as she mentally reeled.

His dark hand reaching down, there was a quiet clink of metal, then his hand returned, holding a halter.

“You're beautiful, such a pretty mare! Oh, where's my manners? I'm Chester, now, you're not going to do anything silly, are you girl?"

Get the fuck away from me! Kelsie squealed and whinnied at him, but all that she heard, was the noises of a scared mare.

Chester paused, one hand on the stall door, before he frowned then his ears slicked back.

“Now hear this first and last. I can be incredibly good to you both, yes, I can understand what you just said.... Look, its my tail on the block if you two girls don't behave, okay? I'm not going to hurt either of you – if we all just co-operate and get along. Now, stop being a silly mare, come here, please?"

Kelsie glared at him, her ears flat and lips curling back like an enraged feral mare.

Kelsie? Please – I think he's serious – please just do what he asks, please?

Staying as still as a marble statue, Chester just looked at Kelsie with patience and understanding.

“Honey? Trust me – this goes one of two ways. One, you be a good girl, you'll be loved, cherished and cared for. Two? You'll get darted with a tranquilliser – then you'll be dragged out on a sled and put on the wheel... You don't know what that is, but trust me – you'll be made run until you think your lungs will explode, your heart will stop and your beautiful legs will snap off... then you'll be made run some more, until you get an attitude adjustment..."

He means it – Come the warning thoughts from Cassie.

Kelsie shuddered, then dropped her head, taking a fearful step forwards, then another.

“Good girl, excellent!" Chester smiled, his dark lips curling at the corners.

Kelsie come to a halt, her head and neck over the stall door. As Chester went to place the halter on her, she squealed and her teeth crunched down with a loud snap. Chester was quicker than her, then slapped her sharply across the side of the neck and stepped back.

“You get one for free..." He told her, keeping his voice calm, but the look he gave her spoke volumes. “You really think you could get away with that? You've been a mare for...what? Six hours?"

What? Kelsie thought in horror.

It must have shown on her muzzle, eyes and ears, as Chester merely quirked up an eyebrow.

“Now, please...no more nonsense, okay? Look, I know how – frightened you must be, trust me, I know..."

Kelsie's ears flattened and she bared her teeth again.

“Don't give me that look – what? You think I was born like...like...this?"

He opened the stall door, then his presence pushed Kelsie back, as he stood there, holding the halter in one hand, showing his full self off.

He stood about 7' tall, bipedal, his pale hooves – one dark knee length sock, the other a white sock merely to the ankle. From knees to the top of his head he was a light dun with black tail and mane and expressionate brown eyes.

Kelsie looked at him, then really looked at him – seeing the six inch long black, leathery sheath and the grapefruit sized testicles and the leathery scrotum.

“Take it all in sweetheart..." Chester nickered in laughter, his black lips curling up towards his ears.

Kelsie blinked, then trembled and blinked again, her ears slowly coming forwards again.

“That's it, good girl! Okay, now... please?"

He walked over, seemingly effortlessly, balanced perfectly on his hooves, before he touched Kelsie's nose and tenderly stroked it.

“Good girl, very good, now – stand up..."

With two quick movements, obviously from years of practice, Chester slipped the halter nose band over, then looped the bridle path strap over the back of her head. Swiftly, he tightened it up and released her. He laughed when Kelsie tried to look down, turning her head from side to side, unable to see the actual halter, but feeling it was there.

“There, see? Was that so hard?" Chester asked, as he gently placed both hands either side of her muzzle, then leaned forwards – touching his velvet like nose against hers.

He breathed out – and Kelsie breathed in, then exhaled – the anthro and feral equine's exchanging breaths.

“Now, that was wonderful! Chester smiled and caressed her muzzle tenderly. “Alright, now, lets see about that beautiful bay mare next door..."

Kelsie's ears went flat, before Chester sighed and looked at her, until Kelsie dropped her head.

“Good girl, I can see you're the dominant one, chestnut's are usually such strong willed and forceful."

He walked out of the stable, then went next door. Cassie squealed and stamped a hoof, shaking her head violently from side to side.

“Really?" Chester laughed softly. “Such a cute mare like you, really shouldn't use such horrible language! Now, are you going to behave yourself? Look, I know, you're confused, stressed and unsure. Believe me, I was the same – now look at me? Five years I've worked this farm – from what I was... to what I am now. Life here can be good – better – than what you had, now, stop this nonsense, let me halter you and please, behave?"

Cassie stared at him, before she glanced over at her sister, then back at the stallion, before she snorted and obediently dropped her head.

You always were easily led Cassie... Come the thoughts of her twin.

Gratefully, Chester smiled and slipped the halter on, then stood back and looked at Cassie appreciatively.

“You really are a beautiful mare – you both are! Now, lets..."

Chester's nostrils flared, before his eyes widened and a smile spread across his dark lips.

Cassie stepped from one hoof to the other, looking sheepish, before she turned about and trembled, her tail hoisted like she was an Arabian.

“Now, now," Chester chuckled, before he reached out and placed a hand lightly on Cassie's rump and caressed it gently. “You can't get to me that way, I'm sure, when the proper time comes...then again, are you absolutely certain...you're knew to this body, its instincts and urges..."

Cassie seemed to frown, before she nickered and stepped backwards, her tail flagging up over Chester's right shoulder.

“Urgh,"

Chester groaned, then backed up to the stable door, quickly turning around to look left and right, before turning to face Cassie again, who looked back over her shoulder and nickered at him.

“I haven't got the time for the whole show..." Chester grinned. “Maybe a little tease for an obviously very forward mare, who knows what she wants – and how to ask nicely for it..."

Cassie? – what are you doing? Come the thoughts from her twin.

Cassie's broken thoughts come back. I can't explain it, the scent of him the look of him, it's...intoxicating, I mean...

Cassie's thoughts vanished, as her eyes widened and she felt the stallion's fingers fluttering over her labial folds. Sensations Cassie had never imagined flooded her as Chester grinned and separated the dark slit – leaning forwards and puffing air through his nostrils and against the pale pink folds within.

A squeal was torn from Cassie's muzzle, as she ratcheted her tail up over the stallions head, pleasure beyond anything any human man had brought her – sending its sensations through her nerve endings.

“Easy there girl - “ Chester whispered, gently placing a paw on Kelsie's rump. “We don't want to get caught...now, just...enjoy it..."

Cassie tried to stifle the squeals and whinnies, as Chester's lips brushed from side to side – then his broad tongue slipped into the dark tunnel and expertly licked further and broader than anything she'd ever experienced. His fingers splayed apart the bottom of her labia and his middle finger rolled back and forth over her swelling clitoris with care and perfect pressure.

Cassie? What...oh... Kelsie's mind flooded with the endorphin's that filled her twin's mind, her own labial folds clenched and relaxed then clenched again, almost as if Chester was orally pleasuring her as well – so tight were the twins bonded.

“Oh, you're better than just beautiful..." Chester whispered, just loud enough for the two new mares to hear. “You're incredible! Now little mare, I'll really show you what a stallion's capable of..."

Chester used his right hand to spread her labia completely apart – holding it open as he swirled and curled his tongue up inside Cassie's increasingly slick tunnel.

Her mind was erased in less than three heartbeats – the stress and anxiety vanishing as pleasure built on pleasure. No human man had ever even come close with his tongue and fingers and...and...

Cassie's labia slammed shut like a wind blown door, the powerful labial muscles contracting and crushing Chester's tongue, before she dropped her hips and her orgasm come down on her like a run away train. Slick fluids gushed from deep within her, sweet and intoxicating. Chester's eyes were wide, before he spread his lips as far apart as he could – pressing them hard against Cassie's convulsing folds. He drank her down like a fine wine – his own pleasure spiking within him as he tasted her willingness and receptivity to his attentions.

Cassie trembled like she'd been hit with a shock prod, muscles quavering, legs quivering like a newborn foal, her head low and muzzle open, saliva dripping onto the straw below.

“Wow..." Chester gasped, then swallowed and wiped a hand over his lips, before he licked away the last drops from Cassie's groin. “I've had some mares – more than a few fillies... I've never had one come that hard, or that quick – ever..."

Cassie gasped like she'd run a 2000 metre race, her dark coat slick with sweat and body shaking uncontrollably.

“If you're like that, just from a little oral stimulation..."

Chester pondered, as he walked around to Cassie's front, then gently lifted her head up. She gazed at him, then her eyes went wide, as Chester smiled and pressed his dark lips against hers. Cassie's ears went half-back as she frowned, then felt his tongue slide inside her mouth and tangle with hers as he kissed her long and deeply.

Next stall over, Kelsie squatted and her own orgasm splashed onto the straw, her body shaking as the two twins shared their emotional state and sexual arousal.

“I heard that - “ Chester laughed quietly. “I think you two girls will fit in beautifully... I'm definitely going to have a hard time pleasing you both when the time comes..."

Neither new mare could answer the stallion – they were too busy experiencing each others orgasm and post orgasmic lust and pleasure – each in turn reinforcing the other – as both pondered what it'd be like to feel this amazing anthropomorphic stallion's thick length inside them – truly – making them mares...

TO BE CONTINUED...