The rearmese emerged from just below his mother's gaping anal channel. As the miracle of birth ensued, the fully grown assbyssian mother carefully pulled the newborn from the gravitational pull of her vacuous behind. The creature was born large, hardy and nearly ready to walk, thanks to the the grim gestation process of their species. In the mother's womb, the developing young had instinctively begun competing for dominance before even taking their first breaths. The zygotes slowly began absorbing each other, until only a single fetus remained to develop unchallenged. This ensured the infant rearmese was both fit and primed for the astounding growth-rate his predatory kind enjoyed when properly nourished.
Coucal was the signifying cry his attentive mother knew him by from his first vocalizations, and it became what the intelligent, wild creature knew as his name. The first weeks, Coucal subsisted on his mother's thick, oily milk, until he was old enough to take solid food-- through his asshole. The rapid-growing rearmese subsisted on scraps of prey at first, carefully torn from the margins of his mother's rump. Soon, however, the creature was able to suck up the small animals his mother would bring him, whole. No bones littered the fastidious nesting site of the mighty Assbyssian mother, for neither of them emitted any trace or refuse from their voracious habits.
His sort grew up fast, and that meant young Coucal needed rapid lessons in harnessing his unique species' advanced hunting abilities. His mother, Gormorlar, would take her developing progeny out on hunting expeditions, slowly teaching the curious rearmese about the ins-and-outs of becoming a successful predator. Coucal would stare on, his orange-furred face slack-jawed at the awesome feats accomplished by his huntress mother. He only hoped to match her cunning ferocity one day. His young, quickening mind became inspired by Gormorlor's example, as his body thrived under her maternal nurturing.
As the blissful years passed, the young rearmese grew into an adolescent analynx. Coucal's ocher fur had deepened to a rich rust color, and his ravenous ass had developed into a gaping, lubricious passage of incredible consumptive prowess. It was a deeply traumatizing period in his life when Gormorlar stopped bringing her burgeoning son much, if any, prey. Hunger prompted the intelligent analynx to range from their nestsite, searching for his own meals. Hunting succes was bitterly difficult to achieve at first, bringing the wet-bottomed young predator to yowling frustration after several failed ambushes with his gripping tail and sucking behind. He barely scrounged enough meager subsistence, until desperation drove Coucal to determination.
The analynx was nestled deep in the scrub, the chill of Winter in the air. The deer did not notice the half-starved predator laying await by the stream clearing's foliage cover. Large ears swiveling about anxiously, the doe broke the chilled ice with a hoofed strike before tentatively licking through the chilly rent at the babbling brook below. That's when Coucal struck, pouncing out and tackling the relatively larger cervine down to the ground.
The snarling analynx rapidly had his haunches squashed down firmly over his deer prey's, and soon a squelching noise filled the crisp forest air. The doe was left wildly flailing at the snowy ground, crying out as it was slowly sucked backwards into the analynx's engulfing anal orifice. Coucal had to focus and coordinate his flexible body to coax his prey's hoary backlegs in deeper, the air tinged by his snarls. Considering the size difference, it took the steadfast predator many minutes to work in the struggling doe, until all that remained jutting from his rippling sphincter where a pair of hooves and a baying cervine muzzle. Finally, with a wet pop, the last of his struggling prey was tucked into the impossible space of his rectal confines. The triumphant predator was immensely pleased, having secured a welcome load of nutrition and satisfying the cravings of his gluttonous ass.
***
The portly scientist poured over the trailcam footage from the river-bend watering hole, murmuring excitedly. He replayed the savage hunting footage again and again, marveling at the unprecedented creature. To think, something of this majesty, of this astounding physiological complexity, could be lurking within his own backyard. It was all more than Dr. Mephesto could imagine. However, the proof was undeniably before him. By pure chance, and his belief in the long-shot wildlife monitoring project, one of the most astounding breakthroughs in gastroenterological research may have just been uncovered. The Council of Rectal Geneticists would need to be informed, and a capture expedition outfitted.
Despite his age and weight, Dr. Mephesto was at the party's forefront, leading the troop of lavishly outfitted trappers and genetic researchers down the Colorado forest trails. He was filled with a relentless energy, mind focused on the potentially dangerous work ahead. He kept musing about the stupendous serendipity of it all, a marvelous biological artifact of his life's passion manifesting so nearby. The enthralled researcher was determined to do whatever it took to continue the advancement of this important field of study, and breathed hard, tightly clutching the carved, wooden posterior adorning his walking cane. Images of the deer disappearing into the creature's rectum haunted him every time the aged genetics scientist closed his eyes. Whatever it took, the incredible properties of this beast's ass must be tamed, for the advancement of all mankind.
The mercenary poachers set up their snares and nets expertly, taking care to mask their scent. They had gone over the capture protocols relentlessly with the strange 'Council of Rectal Geneticists', and understood they would receive no pay if the creature was killed, or even seriously harmed in the capturing process. A bleating goat was staked by the icy stream edge, right where Dr. Mephesto had first observed the creature hunting. And then, they waited. For hours and hours they lurked, until it was nearly too dark to see. They were about to call it quits for the night, the chances of a successful ensnarement diminished in the dim light, when a cry of alarm roused everyone to action.
"It's got me! Oh God, it's sucking me in, heellpp--Aughh!" The cry of alarm was aborted by a tell-tale sucking noise, the poachers and scientists rushing over to the source, a rustling series of bushes on the outskirts of their emplacement. The poachers cried out in alarm at the sight before them, and the air was filled with the pneumatic hiss of tranquilizer guns being fired.
Dr. Mephesto had to clear up the chaotic battle scene, angrily demanding, "Stop, stop firing! You've already hit it, we don't want to kill it with an overdose of sedatives!" The orange-furred creature wobbled about woozily, paws struggling to keep traction as the poacher struggled about, half-way embedded in his sucking ass. Eventually, the tranquilizer compounds did their work, and Dr. Mephesto personally coordinated the employee removal and creature binding procedures with particular care to preserve the specimen at any cost. Eventually, the scared, gasping poacher was laboriously withdrawn from the comatose ass-monster's rectum, his hair dripping with slime and suddenly turned stark white. The hefty researcher approached his side, voice feverish with excitement, rather than concern or sympathy, "What was it like? When the creature had you in its... grasp, what did you see?" All the man could manage in response, a nervous tremor in his voice was the word "Stars" which he repeated again and again in a rising hysteria.
***
"Coucal... Coucal, coucal, coucallllmrrowwwl!" Coucal angrily hissed. The full-grown creature padded about in his cell, upset as usual. Years had passed since his initial abduction, and the proud hunter had had to adapt to a harrowing, unnatural existence. Coucal longed to return to nature, resenting how he was caged and experimented upon at the whim of the crazed, cruel entity that ruled the facility imprisoning him. However, regularly scheduled feedings had allowed the adolescent analynx to steadily reach his full growth potential. Coucal had matured into a resplendent assbyssian, larger than even his long-missed mother, Gormorlar. His sensitive ears pricked up, overhearing his hated captor's voice rising, speaking to other man-things from an observation platform nearby.
"Behold, the magnificence of the creature. It may only have one ass, but it may be the most stupendously mighty asses I have ever seen in my lifetime of researching proctological mechanics and genetics," Dr. Mephesto's voice was awed as he gestured to the great burnt-umber beast below them, even reverential.
The group of generals stood by, seemingly unimpressed as their panoply of medals jangled about, even when they stopped moving. "Hmmm, you keep talking about the 'might' of this creature's ass, but what kind of military potential does this 'assbyssian' display?" The squirrely general shot the unkempt scientist a stern look, before continuing, "We've sunk a lot of money into this little pet project of yours, turned a blind eye to a lot of unethical research practices, so you'd better have results to show us!" The researcher of all things gastrointestinal dismissed the military man's concerns with a curt gesture, before pointing to a rising commotion from the cage beneath.
A screaming woman was dropped down into the assbyssian's cage from a chute above. The poor lady's fright rapidly compounded upon noticing the mighty predator before her. His rapid metabolism hungered for the hapless prey, prompting Coucal to crouch down on all fours. The observing men watched without empathy while the beast began positioning his gaping anus straight at the horrified woman, his huge tail wavering about excitedly. A strange wooshing noise could be heard, filling the air as the assbyssian's rectum began inexorably attracting the horrified woman with intense gravitational force. The screaming female victim tried to cling to the smooth steel cage floor, but could find no traction as the mighty predator's hungering ass sucked her in from across the room.
The generals gazed down awestruck, their medals gently pulling towards the assbyssian as it steadily reeled his prey to her gooey doom. The poor lady tried to fight her demise, shrieking for help as she sank into the monstrous creature's dilated sphincter feet-first, her legs and thighs rapidly following suit with a lurid slurping sound. Coucal made short work of the small woman, her slender frame disappearing into the depths of his rectum with undignified haste. Feminine, moaning cries were barely discernible from the glistening, purple-tinged depths of his rectum, before all signs his female prey were lost. Upon conclusion of the feeding demonstration, Dr. Mephesto gestured to a piece of recording equipment and monitor nearby, "Watch. We put tracking cameras on the... test subject, and as always, this is what happens to the feed."
The camera footage showed a recording of the poor woman's grisly demise within the assbyssian. They watched the yawning rim of the creature's anus as it gulped about her wide hips, before she was entombed in the captured creature's undulating anal depths. Their last glimpses of the camera footage were of impossibly bright light within the assbyssian's depths, then the feed blinked out. The generals faces were reflecting in the black mirrored surface of the darkened monitor, and they seemed genuinely impressed with the creature's capacities. "Is it intelligent? Can it be trained for combat? Have you been able to secure a breeding pair?" The cohort of military brass were awash with questions, Dr. Mephesto answering as best he could. Below, unbeknownst to the chattering humans, Coucal took careful notice of his surroundings. Every time it opened, the smart predator was getting a good glimpse of the mechanism that had just deposited his squirmy meal.
***
Coucal waited for his next feeding session, seeming far more relaxed than normal. The full-grown assbyssian was patiently crouched down on all four paws, like usual, poised for another display of predatory prowess. Unknown to anyone but the planning beast, the creature's next presumptive meal may yet be reprieved from their slated fate. Coucal had more important things on his mind than yet another boring, unfulfilling feeding session. When his sensitive ears detected the yelling person clanging down the sealed delivery ramp, the assbyssian immediately sprang into mentally rehearsed action.
Before Dr. Mephesto or his assistant could even react, the spry creature was clambering up the open delivery mechanism. Ignoring the freshly dropped prey, Coucal expertly wiggled and adjusted himself up the narrow shaft. The creature's feline-like frame was incredibly flexible, and anywhere Coucal could stick his head, his body could squeeze in as well. Soon, he'd made his way to the other side, finally escaping his stifling quarters below. The exterior of the genetic research facility lacked the structural reinforcements to bar his way, and Coucal was single-minded in pursuing delivery from the wretched building. The creature nearly paused to examine the bizarre monstrosities trapped in nearby cages like him, his heart empathetic to their plight. Many of the fellow detainees bore multiple asses grafted to their behinds, a parody of the mad scientist's work in radical rectal alteration. Vowing to one day return and exact revenge for his ignoble confinement, Coucal finally spied sunlight from a nearby window, and smashed through to the glorious outdoors.
The assbyssal exalted in his newfound freedom. His sensitive eyes slowly adjusted to the bright light as he shook his mane about in sublime gratification. His revelry was interrupted when the nearby roar of traffic alerted Coucal the fact that he was not yet truly free of the realm of men. However, the assbyssal was both eager for prey, gratification, and vengeance for suffering years of involuntary internment and experimentation at the hands of the crazed ass scientist, Dr. Mephesto. When he spied a large, warm vehicle full of prey, the wanton creature leapt into action, eager to test his sphincter's capacity after being left neglected and unsatisfied for so long in that facility. Little did Coucal know, however, but he was still being actively tracked by Dr. Mephesto using an implanted chip, a small drone far above recording the beasts every action and beaming the footage right to the ruthless scientist's laptop.
Leaping upon the dark asphalt, the creature turned around immediately, presenting its widened anal opening to the oncoming car. It was full of sorority sisters out for a rocky mountain ski trip, and they braked just in time to avoid hurtling into the assbyssal's waiting anus. Slamming on the reverse, the car managed a few feet of backwards movement, before a lurching force slowly dragged it back forwards. Coucal had to concentrate, harnessing his body's neglected gravitational attraction powers, but he eventually managed to overpower the two-wheel drive car's meager engine. The smell of burnt rubber filled the air as the car's reversing tires were slowly dragged toward his waiting rectal depths. Though the assbyssal had grown large at Dr. Mephesto's genetics research facility, he still struggled to manage the large sedan into his greedy innards.
The women screamed in terror as the front of their car embedded into the horrifying creature's fuzzy ass, wet slime splattering over the hood and windshield. Several of them tried to exit, but the omnipresent gravitational reaction squished them so tight into their seatbelts, they couldn't even manage to open the doors. One girl managed to undo her restraints, and slammed into the backrest in front of her, pinned in place by the unseen force. Coucal bellowed and snarled with the struggle of working the occupied car deeper into his predatory ass, every muscle in the slender creature's body coordinating to help induct the hot, revving vehicle.
The sight of the assbyssal trying to anally engulf a whole sedan caused passing cars to slow, a scene developing as people stopped to get footage. Nobody dared intervene in the huge creature's strained efforts to anally absorb the vehicle full of panicked women, though progress was slow for Coucal. He used his gripping tail extensions to help hold the vehicle's roof steady, every inch of progress an eye-bulging exertion. Incrementally, the assbyssal