Looking over to the coffe table, at the strange briefs once more, curiosity washes over you, and you pick them up with curiosity. Looking at them, it doesn't take a genius to guess the reason for the unusual name. It was designed to fit an animal, not a man. The thought sends a chill over you, but the cloth in your hands was just as warm as you'd expect any regular pair of briefs to be.
And you find your own hand drifting lower.
It's so warm, it almost felt comforting, you thought as your hands roamed the cloth.
The fabric was unlike any you had seen before, a sort of fur-like texture covering the inside of the garment. You stroke your finger across the softness, and a tingle runs through your spine as your fingertip grazes your own skin through the briefs.
The material has an oily texture, you notice as you run your fingers through the fur. You can feel your skin warming, your finger coated with a fine film of whatever material the garment is made from. It has a heady scent to it, musky and thick, and you feel yourself drawn into it.
The heady aroma filled your nostrils as your fingers slipped beneath the waistband, your breath quickening, the heat of your flesh increasing with every stroke.
The briefs seemed to tighten as you pull them up your legs.
And you were shocked when you realized you could not get them to cover your body properly.
They fit loosely over your thighs and waist, the soft, fuzzy material enveloping you as it wrapped around you like a blanket. They were just barely tight enough to contain your penis, but they felt loose on the rest of your body, leaving large portions of your skin exposed to the cool night air.
But then... you heard a noise.
The briefs seemed to be vibrating, as if they were coming to life.
A sudden sharp pain shot through your lower body, and you cried out as you doubled over in pain. It was as if the briefs were biting into you, pulling your flesh and stretching you out in a way you could not control.
You could feel the cloth shifting as you fell to your knees, you noticed your legs stretching and morphing, growing bigger and more powerful, as the briefs began to tighten around your hips. Your legs began to shake, as your lower body swelled and began to alter its form, changing into something... different.
Your voice caught in your throat, your breath catching, as your legs swelled, you let out a groan, feeling your calves and thighs thicken and stretch. You fell to your side as your legs seemed to be rearranged into a new and terrifying position, your legs were now like that of a beast, thick and strong. You could feel the muscles growing and expanding beneath your skin, a feeling like your bones were stretching out to accommodate your new form, their structure becoming that of a quadrpedal, furry, animalistic beast, not human.
Your thighs widened and thickened as your knees turned outwards.
As your thighs swelled, you could feel your body being reshaped by the briefs, your hips shifting to better accommodate and widen, the skin on your lower half becoming thicker, more leathery, as your buttocks swelled and rounded out, growing larger, softer, and becoming plumper, your pelvis shifting to allow for greater movement, and the briefs tightening to conform to your new shape.
Over the thick, leathery skin of your legs, you could see small patches of fur begin to grow, small tufts of light brown, almost golden, fur sprouting all over your legs, thickening as they grew.
Your lower body was quickly covered in a thick layer of fur, as your upper body was left bare, save for the briefs themselves, which continued to tighten and shift around you, the oily scent from the garment filling your nostrils.
You can feel your skin thickening and toughening, the leathery texture becoming even more pronounced, as your arms are pulled into a new and terrifying configuration, your shoulders shifting to allow for broader, stronger arms, your elbows bending outwards as your forearms shorten, becoming thicker and more powerful, biceps swelling, triceps thickening, your hands and fingers shifting and altering, becoming shorter, stouter, and covered in fur, your palms becoming wider, and your nails growing longer, thicker, and sharper.
On all fours, you gasp, you could feel your spine beginning to elongate, a ridge of muscle forming along your back, and your waist narrowing, the briefs tightening around your middle, your belly rounding out as your abdomen is reshaped into a firm, round, muscular stomach, covered in fur.
Your torso begins to shorten, your ribs becoming more prominent, your chest broadening, and your chest swelling, growing larger, softer, and rounder, your pectoral muscles thickening, as your nipples became longer, thicker, and hard.
Wait... your chest?
You glance down at yourself, and were shocked at the sight of your rapidly expanding breasts.
Growing as you watched, your breasts ballooned outwards, your rib cage broadening to support their swelling size and weight. You can feel the skin on your breasts thickening, becoming leathery, as fat, firm orbs of soft flesh swelled and filled with fluid. Your nipples became longer, thicker, and darker, forming stiff, pointy, black peaks in the midst of your enlarging, leathery teats, which only seem to become even more round and pert as you watched them continue to grow.
They bounced and jiggled before settling into their new form, finally, they slowed and stopped. They were like two firm, supple balloons, jutting out from your chest proudly and aggressively, their sheer size seeming to fill the room around you, their leathery texture shining with a fine sheen of oil, making them appear bigger, rounder, and heavier than they really are.
Your steps felt unsteady, and you looked down at your still human feet, looking extremely out of place compared to your growing, animalistic legs.
You quickly turn your attention back to your transformation, as your thoughts feel even slower and more distracted.
The growth on your hands had continued as they grew, the muscles becoming even thicker and stronger, the bones reshaping themselves, your hands slowly mutating into true claws, the fur on your arms becoming darker and thicker as it crept further and further down towards your fingertips, as sharp, cruel looking talons burst out from the tips.
Your feet seemed to be going through the same experience, their transformation, their growth, and their reshaping, from human, to something distinctly and horrifyingly animalistic.
You felt a deep pain in the soles of your feet, a tightness that had not been there before, as your toes begin to curl, and lengthen, your toes splitting and tearing, the flesh knitting itself back together to form monstrous, curling claws. You can feel your bones twisting and breaking, rearranging themselves, the sound of cracking and snapping loud and unmistakable, and yet somehow, you couldn't bring yourself to scream.
You watched in rapt fascination as your claws slowly erupted from your feet, their growth, as slow, and tortuous, as everything else.
With each flex of your toes, your claws dug into the hard earth beneath you, and a tingling feeling shoots up through your arms and into your chest, filling you with a wild, raging desire, a desire to hunt, to chase, to capture, and to possess.
Your legs continued to grow and swell, thick, muscled thighs rising, and swelling out from beneath you, pushing your hips and buttocks wider and rounder, as your knees slid further apart, and the fur covering your body spread and thickened, its golden hue fading to a deep, midnight black, as the one on the rest of your body does.
With every step, you felt yourself sinking deeper and deeper into the floor below, and you watched, almost entranced, as your feet continue to shift, grow, and transform, before your very eyes.
From the center of your foot, a thick, leathery layer of skin, hardened and calloused, begin to grow, and stretch, sliding between your toes and the ground as your entire weight shifted further onto your feet.
The newfound surface of your soles seemed to rise, growing, and swelling with your legs as they continue to transform, the new callous protecting your feet from the rough ground beneath you.
You look down at them in shock, unable to understand the new sensation you were feeling, or why it felt so pleasurable to your rapidly increasing senses.
Then you saw them, thick, heavy pawpads had grown, and formed, sliding forward to protect the bottom of your feet as they pushed down onto the floor beneath you, lifting you, and your weight up, as if you were standing on a pillow, a sensation of comfort and stability that had not been there before. Your front paws slid and dragged, the soft leather of your pads flexing with each step.
Your paws felt... comfortable, like wearing a pair of oversized boots, warm and padded, and yet with no trace of the weight or tightness one might feel from such an accessory. Taking a few steps with them revealed how big and wide they truly were. Every step seemed to cover three or four paces of regular ground.
In your haste to take a step, you had accidentally shattered one of your dining room chairs with the sheer power and weight of your new paws. The impact had torn through the wooden chair, the remains flying apart in a burst of splintered wood.
Your ears flicked as you took in the scene before you. You were amazed at how small the room looked.
The walls and ceiling seemed to shrink, to compress, to squeeze around your new, massive form, everything seemed smaller, too small to contain your new size, and the power that now flowed through you.
You couldn't believe how far your head hung from the ground, the sheer height and strength of your new form sending shivers down your spine. You were taller than you were as a human, and you're still in a quadrupedal stance. You could barely believe your eyes.
Your rear end swells outwards and downwards, thick and powerful, and heavy, like a round boulder, your buttocks swelling and softening as the fur on your rump grew thick, and oily, your hips becoming wider, your buttocks rising, and curving, until they seemed to almost blend with the thickening of your legs.
You can feel a tightening sensation in your rear, an itchy, tingly, tugging, that sends sparks of pleasure shooting through you as your spine seems to grow, to lengthen, and stretch. Your lower back felt stiff, almost cramping, as the flesh around your tailbone seemed to tighten, and grow, your muscles shifting and rearranging as you felt a thick, muscular tail burst out from your rear end.
The fur on your tail was thicker and heavier than the fur on the rest of your body, its warmth and softness providing a feeling of security and comfort you had not felt since you first put the briefs on.
The briefs began to shrink, their furry exterior thinning and tightening, the once baggy shorts conforming tightly to your buttocks and upper thighs, as their coloration began to fade, slowly blending into the thick, dark fur covering the rest of your body.
And you couldn't believe what happened next.
The briefs had began to merge with you.
The soft, leathery material fused with the flesh on your rear and lower back, becoming almost a part of you, as the tight fabric slid upwards, its fur becoming thicker and thicker, almost becoming one with the fur on the rest of your body, a thick, wooly coat of black fur.
Your mind reeled as, still inside the briefs, your puckered anus seemed to throb and swell, as the furred material from the outside was forced inwards.
Suddenly, with a low, rumbling growl, something happens.
As the material from the briefs slowly disappears into the skin on your rear end, you can feel the muscles around your shaft begin to clench and tighten, your shaft seeming to swell, and engorge, as your briefs seem to absorb its length, its girth, and its throbbing.
Slowly, your manhood begins to thicken and expand within your briefs, as they seem to shrink, the soft, fur-like interior pressing against you, teasing you, and filling you with a desire for release that you had not felt before.
As your manhood grew, the briefs seem to absorb it, pulling your shaft further and further inwards, until it disappeared.
As your shaft is pulled inwards, you can feel something happening within the briefs, a feeling like the muscles surrounding it were contracting and releasing, like a heartbeat.
And you realize, in awe and wonder, as your erection presses against the interior of the briefs, that your briefs had transformed into a protective sheath for your erection, as thick, sturdy muscles begin to surround it, and your shaft continues to expand and engorge within the fur-like folds of the inner cloth.
The briefs had completely transformed into a canine's sheath, a thick, wooly, hairy pocket of flesh, that wraps around your cock like a second skin.
You can feel the veins on your erection becoming thicker and more pronounced, the skin on the outside growing tougher and leathery, as your manhood pulses with an almost inhuman lust.
Your cock seems to harden, and throb, as the shaft begins to swell and elongate, thick, sturdy, blood-filled ridges growing along the underside of your manhood, the flesh growing stiffer and harder, as the tip of your shaft seemed to poke outwards from the opening, straining to escape.
And suddenly, with a groan, your tip bursts out from the end of the sheath.
As your penis burst out from the sheath, you can feel a sort of clicking sensation running along the length of your shaft, the veins in your length seeming to solidify, and swell, thickening and engorging into a rigid, leathery column of muscle and sinew.
The head of your shaft seemed to become pointier and more wolf-like, a small, stiff, and ridged tip pushing its way out from the tip, the veins on the underside of your shaft seeming to stiffen and pulse, thick and leathery.
With every throb of your cock, you can feel it stretching further and further, the shaft expanding and elongating with every surge of blood rushing through its length. Your manhood seemed to become even thicker than it was before, and as it grows longer, the inside of your sheath tightens and throbs around it.
Suddenly, you can feel something happening at the base of your shaft.
A thick, round swelling seemed to begin to form, a feeling almost like a pair of rubber balls were forming at the root of your erection, and with every surge of lust rushing through it, the swelling at the base of your length seems to grow, and thicken, it was your new knot.
In the dizziness of your transformation, you stumble on your new paws, falling forwards, nearly crashing into a window.
Regaining balance, you lifted your head and looked into the reflective glass. And were shocked at what you saw.
At the end of the neck, was your still human head, atop of your monstrous body.
As you stared at your still human face, your transformation continued, with the thick, dark fur covering the rest of you creeping up onto your chin, your lower face seems to melt into it. Your jaws begin to thicken, to broaden, the cheeks seeming to swell outward, spread over them, your mouth pushing outwards into a snout, growing broader and stout.
The tip of your nose begins to thicken and round out, the snout seeming to flatten and broaden with it, its tip slowly moving forward and downwards, flattening into a black, moist canine nose, your nostrils seeming to swell, your sense of smell sharpening with each breath you take, the hot, thick musk of your own body filling your senses like never before.
The dark fur seemed to spread upward, covering the sides of your face and the crown of your skull, thick, velvety fur spreading over you, over your jaw, your lips, and your cheeks, covering your face in thick, black fur.
Your neck grew, swelling with thick, leathery muscle, your shoulders broadening, the fur covering you spreading further and further over your body, thickening and deepening in color to the same midnight black that covers the rest of you.
Your human teeth began to push their way out through your mouth, the canines seeming to sharpen, forcing you to open your mouth and see the changes for yourself. Your human teeth were being replaced by long, pointed, dangerous dog fangs, razor sharp, gleaming white. Your jaws became broader, heavier, and stronger, as a low, growling, bark erupted from your throat.
A bark.
You tried to speak again, to say anything, and this time, the only thing that came out was a growl.
No words escaped your lips, just animalistic, ferocious growls and barks. You tried to form human words, tried to shape the noises coming out of your mouth into human speech, but instead, you could only snarl and snap.
Your ears began to move, shifting, growing longer, stretching, twisting and widening, shifting to the top of the crown of your skull, sprouting, growing fur, becoming pointed, and black, the long fur that covered the backs of them now stretching and blending with the fur covering the rest of the crown.
Then, your eyes began to change.
The color of your eyes deepened, fading into a stark, shining gold, glowing, sharp, and intelligent. Your eyelashes, however, they became longer, and more feminine.
Feminine?...
You didn't have time to think about it when you felt your lips began to swell, thickening into full, pouty, and glossy kissers. They stretched, pushed, and rounded outwards, puffing and plumping into a thick pair of black canine lips.
You opened your new maw as your tongue pushed out from between your jaws, long, slimy, and hot, hanging out the side, licking the air, tasting, and sensing.
Your face was that of an animal's, the face of a wild beast, its maw huge and open, panting, its black lips glistening with saliva as its long tongue licked its thick jaws, its nose thick and wide, a strong muzzle that seemed to be filled with a mixture of feral excitement and terrifying rage.
However, the thick lips, the long eyelashes, the huge breasts that jutted from your chest, along with the feminine features your muzzle was sporting made you appear a mix between a woman's body and a beast, androgynous.
The most masculine thing about you was your sheath, as the large, red erection sticking from your furry sheath and leaking precum, was painfully evident, pointing and stiff.
You lift your paw to examine it further, letting out a low, bestial groan as a hot rush of pleasure surged through your body.
It was so hard, the thing pressing between your legs, a hard, leathery erection that throbs and strains between your legs, filling your body with an almost uncomfortable pleasure.
This forces the last changes to take place, as right behind your sheath, you feel your testicles begin to swell and throb, the texture of their sack growing rougher, and tougher, thick and leathery, with a patch of dark fur forming in a ring, popping out across its surface, as the orbs themselves grew bigger and bigger within it, swelling, engorging, filling up with a thick, sloshing liquid, your poor human sperm being taken over by bestial ones.
A large, canine testicle sac, swollen and bulging, pushes out between your legs, swelling and surging within the tight confines of the heavy, leathery flesh covering them. Your rear hole flexes, contracting, the rough skin on the surface tightening as you feel the huge, swollen orbs within slide, pushing against the heavy, rough flesh of the sack covering them.
You shudder as you felt a shiver run through your body, your tail waving eagerly in the air behind you, as you feel the huge, round bulges of flesh hanging down in your scrotum beginning to tighten and pulse, a heavy pressure building deep within your scrotal flesh.
As the pressure builds, your tail seemed to straighten, your body tensing, a strange heat spreading across your rear, as you suddenly feel your cock throbbing and pulsing, hot spurts of fluid erupting from the tip in powerful streams, spattering the floor before your with hot, thick cream.
Your claws dig into the floor beneath you, as your huge, hairy body convulses, a tingling sensation racing up through your length, a feeling of warmth and euphoria.
You let out an animal howl of ecstasy as your cum erupted forth in thick jets, cock pulsating as it surged and surged, heavy, sludge-like cream flooding out from within the swollen orbs that swung, tightening and bulging, between your hind legs, your load practically exploding out from within you, coating the floor below you with a thick, sludgy puddle of milky cum.
The sperm was impossibly thick, a heavy, creamy mass of liquid, filled to the brim with your genetic material, a viscous, potent paste that could inseminate dozens of bitches in just a single, thick load.
As your orgasm ended, and the flood of semen ceased pouring forth from your manhood, you collapsed forward in an exhausted heap, completely exhausted, your cock deflating back into your sheath, before resting in a spent and blissful afterglow.
In the bliss, your exhausted mind finally starts piecing itself together, the fact that you did just turn into some weird beast setting in.
Before you can react in though, your bestial urges are kicked up again by the overwhelming smell of cum.
Hastily, you set yourself down by the puddle of warm, stinky cream you had just unloaded, before eagerly starting lapping up your own leftovers, the musky smell and taste of cum making your head fuzzy again, a warm buzz settling in your brain, all thought gone, save for eating and licking your cum off the floor like the filthy bitch you had been reduced to.
You weren't a person anymore, your new life was a simple, hedonistic, and lust filled one.
A bitch. A filthy, beastly bitch, there was no point denying that.
You were a huge, hulking, muscular, powerful, raven haired beauty, whose manly masculinity has been supplemented with breasts the size of beach balls that can produce lactation and luscious thighs that would make most women jealous.
But you also possessed thick, powerful muscles, a hairy sheath, huge balls, a long canine dick, a thick, shapely rump, and even a heavy set of balls to go with them.
It had become a female wolf-man's body, no, a futanari, or a futawolf-girl's.
Your thoughts of embarrassment left your mind, replaced by the much more primal and direct ones of your baser self.
You stood back on fours, your massive sheath and balls brushing against the floor while you raised your head high, stretching the muscles along your back, and raising your hinds in the air, as your tail stuck out of the way.
You felt a strong sensation in your chest, something building up in your lungs and throat, and you opened your maw wide to release it.
A great and loud howl tore from your throat, an ear-splitting howl, that sounded inhuman, beastly, and deep, but distinctly a sound of victory, your victory as you had your new identity, your new purpose, you're a wild and free animal now...