The goggles were cold against her face, a sudden, shocking pressure that blocked out the world. The foam seal hissed as it conformed to the bridge of her nose and her cheekbones, and then there was nothing. Not dark. Not black. Nothing. A void so complete it felt like falling. Lena’s breath hitched, loud in the new silence of her own head.

"The visual feed will activate once you are fully integrated into the suit," Dr. Vance’s voice came, smooth and disembodied from somewhere to her right. "Standard protocol. It prevents sensory overload during the donning process."

She nodded, a useless gesture in the nothing. "Okay." Her own voice sounded small, trapped inside the goggles. She heard movement then, a slick, heavy rustle like wet rubber being unfolded. The smell hit her next—clean, synthetic, a scent like a new shower curtain layered over something faintly animal. Her skin prickled. The air in the lab was too cold. The thin cotton robe felt like tissue paper.

"Please remove the garment and step onto the platform."

Her fingers, gone clumsy, fumbled with the knot of the robe’s belt. The terrycloth parted. The chill of the room rushed over her bare skin, raising goosebumps on her arms, her thighs, the flat plane of her stomach. She felt exposed in a way that was more clinical than sexual, a specimen on a slide. She stepped forward, her bare feet meeting the smooth, unyielding steel of the table. It was freezing. She sucked in a breath.

"Arms out, please. Like a T."

She complied. The nothing was unnerving. She focused on the sounds: his measured footsteps on the polished concrete, the rustle of his lab coat, that slick, persistent sound of the suit. Then his hands were on her. Clinical. Efficient. His fingers wrapped around her right wrist, guiding her arm forward. They were cool, dry, and impersonal. He did not linger. He positioned her hand, and she felt it plunge into a sleeve of the suit. The interior was cool, a soft, pliable silicone that yielded to her skin but clung tightly, a second skin that was already wrong. It was too long. Her fingers didn’t reach the end. They curled in empty, padded space.

"This is… roomy," she said, trying for a joke. It died in the void.

"The suit is designed for a range of anthropometric profiles. The internal baffles will adjust."

He took her other wrist. The same process. Left arm swallowed by the cool, clinging silicone. Now she stood, arms extended into nothingness, naked and blind. The vulnerability was a physical weight. She felt a tremor start in her thighs.

"Now, step forward. Carefully."

She shuffled, her toes curling against the cold steel. His hands were on her hips, steadying her. Then they slid down to her thighs, guiding one leg up and forward. Her foot found another opening, and she stepped into it. The suit leg swallowed her to the knee, then the thigh. It was tight across her hips, a firm, uniform pressure. He guided her other leg. Now she was encased to the waist, the silicone snug around her belly, the small of her back. It felt strange, but not alarming. Just a tight, weird costume.

"Now, the critical phase. Remain perfectly still."

She heard him move behind her. The rustling was closer now, right at her back. Something heavy and cool draped over her shoulders. Not like a hood. It was too broad, too flat. It settled against her shoulder blades with a soft, dense weight. This wasn’t the headpiece going over her head. This was something else.

His hands were on her again, pressing the material against her spine. It molded to her, a cool, seamless layer from her mid-back down to the very top of her buttocks. The shape was wrong. It felt like a large, smooth hump. A knot of cold dread began to form in her stomach.

"What’s that?" she asked, her voice tighter.

"Secondary dorsal padding. For structural integrity." His tone was flat, factual. His hands left her back. She heard a click, a faint hum. A motor? Then his hands were on her hips again, turning her gently. "A quarter turn, please."

She let him pivot her. The nothing was spinning. The cold knot in her gut tightened. Something brushed the side of her face—a strap, maybe. Then, a different pressure. Not on her head. On her forehead. Something soft, furred, and plush pressed firmly there, just above her eyebrows. It was secured with a gentle click behind her skull. A strap settled under her chin. This wasn’t a visor. It was too small, too localized.

"Is that… the tail?" The question left her in a whisper.

"Affirmative. The caudal appendage requires a stable anchor point for realistic articulation."

The words were ice water down her spine. The tail was on her forehead. The heavy, cool mass on her back… that was the head. The suit was backwards. He was putting it on her backwards.

Panic, sharp and electric, shot through her. "Wait. Stop. This isn't—"

"The configuration is correct for this test cycle." His hands were on her shoulders, firm, holding her in place. "Please remain still. Almost complete."

She tried to step back, but her feet were trapped in the suit’s legs, anchored to the table. His grip was implacable. She felt him lean in close behind her. The synthetic, clean-animal smell of the suit filled her nostrils. Then she felt something else. At her mouth. A different texture against her lips. Not silicone. Softer. Pliable, almost spongy. It was a ring of something, and it brushed her closed lips as he adjusted the mass on her back.

Her mind, screaming, supplied the image. The fake dog pussy. Positioned right at her mouth. The humiliation was a cold, rushing flood under her skin, followed instantly by a wave of scorching heat. Her heart hammered against her ribs, a frantic bird in a cage. This was wrong. This was a violation so grotesque it short-circuited thought.

She tried to speak, to scream, but the soft, obscene ring was right there. If she opened her mouth, it would touch her. She kept her lips sealed tight, trembling.

She heard the final sound: a long, slow, metallic zipper. It started low on her spine, right at the cleft of her buttocks. The sound was obscenely loud in the void. She felt the pull of it, the suit tightening further, sealing her in. The cool air on her bare back vanished, replaced by the uniform pressure of the locked suit. The zipper traveled up her spine, past the heavy mass of the false head, stopping between her shoulder blades with a definitive click.

Silence.

She was sealed inside. Naked. Blind. The suit was a second skin, tight and unyielding. The heavy head was a hump on her back. The soft, false tail bobbed slightly with her every ragged breath from its anchor on her forehead. And the opening, that other, wrong opening, rested against her mouth. She could feel its every subtle contour through her lips.

"Integration complete," Dr. Vance said. His voice was closer. He was walking around her now. She could hear his footsteps circle the steel table. "The internal climate system is activating. You may feel a warming sensation."

A faint vibration thrummed through the suit. A wave of gentle, pervasive heat bloomed from the material itself, enveloping her. It was a horrible, intimate mimicry of body heat. It made her feel flushed, trapped in her own rising temperature. The cold knot of dread in her stomach was now a burning coal of shame.

"Now," he said, his voice calm, analytical, right in front of her. "I will activate the visual feed. Prepare for sensory input."

A click. A soft digital chime in her ears.

And then, she could see.

The world resolved into a dizzying, high-definition panorama. The goggles projected a seamless, 360-degree view of the lab. She saw the sterile white walls, the steel table from a high angle, her own body from impossible perspectives. The feed came from cameras mounted in the room, showing her from the front, the side, from above. And in the center of her vision, a horrifying, third-person view: a completed canine suit, a sleek, anthro-German Shepherd, standing on the platform. It looked perfect. Professional. The head was alert, ears perked, facing forward. She understood with a sick lurch that the head she saw was the mass on her back. The suit was on backwards, but the visual feed was corrected. To the cameras, she looked normal.

“The visual calibration is nominal,” Dr. Vance said. He was in her field of view now, standing before the suit, studying it with a critical eye. He wasn’t looking at her. He was looking at the product. “Now, for the final sealant protocol. There is a minor aesthetic flaw.”

He moved closer. In her peripheral feed, she saw his hand come up, fingers pinching a small, almost invisible seam in the silicone just beside the fabricated vulva. He gave a gentle tug. A tiny, coin-sized flap of material peeled back, revealing a dark gap right next to where the false opening met her sealed lips.

“This is a ventilation and access port,” he explained, his voice a calm monotone. From a tray, he selected a syringe without a needle, its barrel filled with a clear, viscous gel. “The silicone must bond seamlessly to the subject for full biometric integration. Any gap can cause sensory feedback errors.”

He inserted the tip of the syringe into the small port. Lena felt a cold, pinpoint pressure against the corner of her mouth. Then, a spreading chill as he depressed the plunger. The gel flooded the narrow space between the artificial pussy and her own skin. It was shockingly cold, a slick river tracing the exact outline of the obscene ring where it pressed against her.

“The adhesive is a medical-grade, flexible cyanoacrylate. It will bond on contact with moisture and body heat, creating a perfect seal.” He withdrew the syringe. “The protocol requires an active moisture source to catalyze the bond. You will now open your mouth and press your lips firmly against the interior contour.”

Her mind went blank. Then it screamed. No.

“I… I can’t,” she whispered, the words muffled, her lips barely moving against the silicone.

“You must. An incomplete seal will void the test parameters and your compensation.” His gray eyes flicked up, meeting the canine suit’s glass eyes—meeting her eyes in the feed. His gaze was impersonal. Absolute. “The material is inert. It is a shape. Open your mouth, Lena.”

The rent was $875. It was eleven days late. The eviction notice was a pink slip on her kitchen table. This job paid $2,000 for two hours. The math was a brutal, simple equation.

A tremor ran through her entire body, a seismic shiver of shame. Slowly, with a grinding effort of will, she let her jaw go slack. She opened her mouth.

The first sensation was the cold kiss of the adhesive, now inside her lip. Then, the texture. The interior of the false opening was not smooth. It was ridged, detailed, a complex topography of soft, pliable silicone. It molded instantly to the shape of her parted lips.

“Now press upward. Firm contact is required.”

She obeyed. She pushed her face forward, pressing her open mouth fully into the soft, ring-like form.

The adhesive activated. It was a sudden, intense chemical warmth, blooming from a line of cold to a band of heat. It set fast. A tight, unmistakable pull bonded her upper lip to the upper curve of the silicone ring, her lower lip to the lower curve. Her mouth was stretched into a permanent, open oval, sealed to the fake vulva.

She was gagged by it. Her breath now huffed directly into the suit’s false anatomy, warm air reflecting back into her mouth. The taste was sterile, slightly sweet, like new plastic. The detail of the texture was inescapable. Every ridge, every fold was imprinted on her lips, her tongue. Her tongue, which lay helpless in the open cavity of her mouth, touched nothing but the detailed silicone.

Dr. Vance watched, then gave a short, satisfied nod. He took the small flap of material and pressed it back into place over the port. It sealed seamlessly. “Bond is complete. The interface is now biometrically continuous.”

He stepped back, observing the suit. In her visual feed, Lena saw it too. The canine form was flawless. The mouth of the dog was closed. There was no hint of the violation at its front. The seam where her real mouth was bonded was invisible, hidden within the sculpted form.

Inside, she was drowning. Panic was a live wire in her chest. She tried to close her mouth, to suck in a proper breath, but she couldn’t. Her lips were glued fast to the opening. She could only breathe in short, sharp gusts through her nose, the air whistling with panic. Her saliva pooled, having nowhere to go but to coat her tongue and the silicone it touched.

“The suit’s tactile sensors are now online,” Vance said, consulting a tablet. “You will begin to feel external input through the dermal layer. Let’s begin with a baseline calibration.”

He reached out. On her feed, she saw his hand approach the chest of the canine suit. Inside the suit, Lena felt it. A pressure, diffuse but unmistakable, against her upper back. The sensation was mapped wrong. Where he touched the front, she felt it on the back. The heavy false head between her shoulder blades tingled.

His fingers trailed down. On the feed, his hand stroked the suit’s belly. Inside, a line of sensation slid down her spine, a ghostly caress that made her muscles flinch. The disconnect was visceral, nauseating. She was a puppet with crossed strings.

Then his hand moved lower. On the feed, his fingers brushed over the smooth, featureless silicone between the suit’s hind legs—the area that corresponded to the small of her back, the top of her buttocks. Inside, she felt a soft, broad touch there. It was clinical. Testing.

“Sensory mapping is within expected parameters,” he murmured. “Now, the primary interface.”

His hand moved to the front of the suit. To the false vulva sealed to her face.

Lena’s heart stopped. In the feed, she watched his fingertips approach the detailed silicone. They hovered. Then they made contact.

The sensation was not on her face. It was a direct, shocking pressure on her mouth. On her lips, stretched and bonded. It was the feeling of being touched there, intimately, but translated through a quarter-inch of lifelike material. His finger traced the outer ring. She felt every millimeter of the stroke as a slick, firm pressure on her own lips. A moan, trapped and wet, vibrated in her throat.

“Interesting,” he said, his voice low. “The neural feedback is direct. The suit is reading the tactile input and projecting it to the corresponding biological nerve endings. You feel this?”

He pressed. A gentle, insistent pressure against the sealed opening.

And Lena felt her own lips being pressed inward, into her own teeth. The pressure was outside and inside at once. Her tongue, lying in the open cavity, was pressed down. A choked sound escaped her nose. Her eyes, behind the goggles, screwed shut, but the feed kept playing, forcing her to watch his hand on the false pussy, forcing her to see the thing she was feeling.

He removed his finger. The relief was instantaneous, followed by a wave of trembling weakness. The adhesive bond held fast. Her mouth remained open, violated, a permanent part of the costume.

“Calibration is complete,” Dr. Vance said, stepping back. He made a note on his tablet. “The suit is fully integrated. You will remain in position for the duration of the test. The climate control will maintain your core temperature. Biometric readouts are stable.”

He looked at the suit—at her. A faint, clinical smile touched his lips. It wasn’t warmth. It was satisfaction. “The configuration is optimal. Quite a remarkable fit.”

He turned and walked toward the lab door. The footsteps echoed. “The test cycle is two hours. I will be monitoring from the observation suite. Try to relax, Lena. You’re performing adequately.”

The door hissed open, then shut with a solid, final thud.

She was alone. Sealed. Bonded. The hum of the climate system was the only sound, a low vibration that thrummed through the heat trapped against her skin. In the silence, the sensation on her mouth—the ghost of his touch, the constant, stretching bond—was the only thing in the universe. Her saliva gathered. A drop escaped the corner of her sealed lips, tracing a warm, shameful path down her chin, inside the suit, where no one could see it but her.

She was alone. Sealed. Bonded. The hum of the climate system was the only sound, a low vibration that thrummed through the heat trapped against her skin. In the silence, the sensation on her mouth—the ghost of his touch, the constant, stretching bond—was the only thing in the universe. Her saliva gathered. A drop escaped the corner of her sealed lips, tracing a warm, shameful path down her chin, inside the suit, where no one could see it but her.

Time dissolved. It was breath, and the low hum, and the ache in her jaw. It was the impossible weight of the dog’s head on her back, the tail strapped to her brow. It was the feed in her goggles, showing her own body as a normal, placid canine form lying on the steel table. A perfect illusion. A perfect prison.

The door hissed. Footsteps, crisp and familiar, approached the table.

“Phase one complete,” Dr. Vance’s voice cut through the static in her head. “Biometrics are stable. Neural integration is holding. We will now proceed to an active environmental test.”

In her peripheral feed, she saw his hand. It held a small glass jar filled with an amber, viscous fluid. He unscrewed the lid. The smell hit her first—a musky, pungent, animal sweetness that was utterly foreign and deeply biological. It cut through the sterile air. Her nostrils flared inside the suit.

“Canine-derived pheromones,” he said, as if lecturing. “Estrus-specific. A powerful behavioral trigger.”

He dipped two fingers into the jar. They came out glistening. He reached toward the feed, toward the false vulva of the suit that was her entire world. She saw his fingers approach. She felt the cool, slick gel being smeared onto the silicone opening. The pressure was direct, clinical, thorough. He coated the outer ring, the inner folds. The smell intensified, flooding the sealed space around her face, thick and cloying. It was the smell of invitation. Of raw, dumb animal need.

A second door opened. Heavier footsteps. A low, panting breath.

“Right on time,” Vance said.

The feed shifted. A man in khakis and a polo shirt entered, holding a taut leash. At the end of it was a large German Shepherd. Its coat was dark and rich. Its attention was not on the room, or the men. Its head was down, nose working the air, snuffling loudly. It pulled toward the table, toward the smell.

“Easy, Kaiser,” the handler said, his voice rough. He gave Vance a nod. “He’s responsive. Very responsive.”

“Proceed as discussed,” Vance said. He stepped back, his tablet in hand, observing. “Allow the natural behavior sequence.”

The dog needed no more permission. It lunged forward, not aggressively, but with a single-minded focus that was worse. Its front paws hit the side of the steel table with a clang that vibrated through Lena’s spine. The handler kept the leash short, controlling the approach. The dog’s muzzle filled her feed. Black nose, wet and quivering, pressed directly against the smeared silicone.

It sniffed, deep and rhythmic. Then it licked.

The first contact was a broad, hot, wet stroke across the entire false opening. The sensation on Lena’s bonded lips was a mirror of it—a shocking, slick, overwhelming pressure. A tongue, but not a tongue. A rough, wet heat moving against her own stretched mouth. She jerked, a muffled scream catching in her throat, becoming a wet gag. Her body strained against the suit’s internal harness, going nowhere.

The dog licked again. More focused this time. Its tongue probed, seeking entry. It pushed against the silicone opening, and she felt the firm, insistent pressure against her lips, against the opening of her own mouth. It was trying to get in. The tip of its tongue pressed into the central seam of the false anatomy—the seam that was directly aligned with the part in her own lips.

And then it pushed through.

The silicone gave way, designed to mimic elasticity. The dog’s tongue, thick and rough, slid into the fabricated canal. It slid into the space that ended at her mouth.

It touched her.

The wet, hot, living muscle slid over her own trapped tongue. It explored the roof of her mouth, the insides of her cheeks. It was a violation so profound her mind blanked. There was only sensation: the abrasive texture, the animal heat, the overwhelming musk flooding her nostrils, the wet sounds echoing in the cavity. Her stomach convulsed. She choked, drool spilling freely now, mixing with the animal saliva.

“That’s enough preliminary stimulation,” Vance’s voice came, calm. “He’s fully engaged. You may allow him to mount.”

The handler grunted. The dog’s tongue withdrew with a final, slick pull. Lena gasped for air through her nose, her body trembling uncontrollably. The feed showed the dog’s hindquarters shifting, muscles coiling. The handler guided it, his hands on its flanks.

Vance moved closer to the table. He leaned down, his voice dropping to a whisper meant only for the microphones in her suit, meant only for her. “A moment of clarity, Lena. We took precise measurements. The distance from the exterior silicone aperture to your bonded lips is exactly two inches. The canine penis, upon full erection and knot engagement, will extend approximately six inches past the point of initial insertion.”

He paused, letting the numbers hang in the musk-thick air.

“The knot itself has a diameter of four inches. Once it is fully seated inside the receptacle…” His breath was cool against the suit’s exterior, near where her ear would be. “It will be positioned within your oral cavity. You will feel the expansion. You will accommodate it.”

The dog mounted. Its front paws settled on the rounded back of the suit—on the false haunches. Its weight settled over her, heavy, warm, alive. She felt the shift through the entire structure. In the feed, she saw the canine form beneath the dog, passive and waiting. She felt the frantic scramble of hind paws finding purchase on the steel table. The clatter of claws.

Then she felt the nudge. Blunt, insistent, searching against the silicone opening already wet with saliva and pheromone gel.

It found its mark. It pressed.

The tip pushed through the fabricated entrance. It was a thick, blunt pressure against her lips, a stretching that was both alien and horrifyingly specific. It was not a tongue. It was harder. Unyielding. It pushed past the ring of silicone, into the short, tight channel that led to her.

It touched her lips. The very tip, slick and hot, pressed against the center of her stretched, open mouth.

The dog thrust.

The first inch slid into the channel, and the pressure on her mouth became a filling. A stretching. The thick, smooth heat of it pushed past her lips, into the space of her mouth. It pressed down on her tongue. It touched the back of her throat. Her gag reflex seized, violent and useless, her body convulsing against the invasion. She couldn’t close her mouth. She could only take it.

Another thrust. Deeper. The shaft, she could feel its shape now, its pulsing heat, sliding further into the false canal, which meant further into her. It was in her mouth. It was filling her mouth. Her jaw screamed in protest, stretched wide by the bond and now by this. Saliva and pre-ejaculate fluid mixed, a bitter, salty drip down her throat.

The dog settled into a rhythm. Short, frantic pumps. Each forward drive shoved more of that impossible thickness into her oral cavity. Each withdrawal pulled it back along her tongue, a grotesque mimicry of a suck. The wet, slapping sounds of its body against the suit were loud in the quiet lab. The handler murmured low, steadying words. Vance was silent, observing.

Lena’s world narrowed to the heat in her mouth, the weight on her back, the smell, the sounds. Her panic crested and then broke, leaving behind a terrifying, hollow clarity. This was happening. She was feeling it. Every ridge, every pulse, every slick inch.

The thrusts grew harder, more purposeful. The dog’s breathing became ragged pants near her head. She felt the change coming—a thickening at the base of the shaft still outside, beginning to push against the silicone ring. The knot.

It was a blunt, expanding pressure against the entrance. It wouldn’t fit. It was too big. The dog thrust harder, frustrated, trying to force it in. The silicone strained. Her lips, bonded to the interior, were pulled outward, stretched to a burning ache.

With a final, powerful drive, the knot popped past the ring.

It swelled instantly, a rapid, shocking expansion that locked it inside the false pussy. And locked it inside the two-inch channel.

The bulk of it, four inches of dense, pulsing flesh, filled the short space between the suit’s exterior and her mouth. It pressed against her lips, a firm, unyielding sphere. It pressed into her mouth. It was in her mouth. Not just the shaft, but the knot, a hard, hot fullness crowding her tongue, pressing against her palate, her teeth. She couldn’t breathe through the pressure. Black spots danced at the edges of the feed. Her throat worked, desperate for air.

The dog stilled, locked in place. A series of deep, rhythmic pulses began within the shaft buried in her mouth. Each pulse was a hot, liquid release against the back of her throat. Each one made the knot throb against her lips. The taste flooded her—bitter, salty, animal. She had no choice but to swallow, the convulsions of her throat massaging the invading flesh. The pulses kept coming. The heat kept coming.

Vance’s voice returned, a clinical whisper in the midst of the animal panting and her own wet, choked sounds. “Remarkable. Suit integrity is holding. Biometric spike is within predicted parameters. The integration… is perfect.”

The dog, spent, relaxed its weight upon her. The knot remained, locked, a permanent, swollen plug in her mouth. The handler patted its side. The lab hummed. Lena floated in a sea of sensation, violation, and the raw, undeniable data of her own body responding—the hammering heart, the flushed skin, the traitorous heat between her own thighs, a biological echo to the act she was sealed within.

She was no longer a girl testing a suit. She was the suit. She was the receptacle. The test had only just begun.