Chapter Text
Severus Snape had always prided himself on maintaining perfect order in his potions classroom. Every ingredient in its designated place, every cauldron spotless, every surface gleaming under the dim dungeon lighting. Which was precisely why the soft whimpering sound emanating from behind his desk immediately caught his attention as he entered for his evening inventory.
He moved silently, wand drawn, expecting perhaps a student's familiar that had wandered astray. What he found instead made him pause.
A small kneazle, its lion-like tail twitching weakly, lay curled beneath his chair. Its fur was a messy black with distinctive tufted ears, and one of its hind legs was clearly injured, held at an awkward angle. Most striking, however, were its eyes—brilliant green and far too intelligent for comfort.
"How did you get in here?" Severus murmured, crouching down slowly. The kneazle's ears flattened against its head, but it didn't try to flee. Instead, those green eyes fixed on his with an almost human wariness.
The creature was clearly in pain. Severus could see the shallow, rapid breathing, the way it favored its injured leg. His usual impatience with disruptions warred briefly with something else—something that looked suspiciously like concern.
"Stay still," he commanded softly, as if the kneazle could understand him. Remarkably, it did, going completely motionless as Severus carefully examined the injured limb with gentle fingers. A sprain, nothing more serious, but painful nonetheless.
The kneazle made a small, almost questioning sound as Severus straightened. Those green eyes followed his every movement with an intensity that was oddly familiar, though he couldn't place why.
"Well," Severus said finally, his voice barely above a whisper in the empty classroom, "I suppose you'll be coming with me."
Severus had just finished applying a healing salve to the kneazle's injured paw when his office door burst open without so much as a knock.
"Severus!" Dumbledore swept in, his usually twinkling eyes wide with panic. "Harry Potter has gone missing. No one has seen him since this morning's Defense lesson, and—"
"And this concerns me how, exactly?" Severus didn't look up from carefully wrapping the small paw with gauze. The kneazle—he really needed to think of a name—had gone very still, those green eyes fixed intently on the headmaster.
"The entire castle is being searched," Dumbledore continued, pacing frantically. "Minerva is beside herself. The other students are—Severus, are you listening to me?"
"I heard you the first time." Severus secured the bandage with a gentle touch that would have surprised anyone who knew him. "Potter has likely wandered off on one of his heroic adventures. He'll turn up by dinner, mark my words."
The kneazle made a small, almost indignant sound. Severus absently scratched behind its ears. "There now, little one. All finished."
Dumbledore paused mid-pace, finally noticing the bundle of fur in Severus's arms. "Is that a kneazle?"
"Obviously." Severus's tone suggested he found the question beneath his intelligence. "Found it injured in my classroom. Some student probably smuggled it in and then abandoned it when it became inconvenient."
The kneazle's green eyes darted between them, and for a moment, Dumbledore's gaze lingered on the creature with an odd expression. But then he shook his head, returning to his panic.
"Yes, well—we must focus on Harry. If anything has happened to him—"
"Nothing has happened to Potter that a good night's sleep won't cure," Severus said dismissively, rising from his desk. "Now, if you'll excuse me, I need to get this creature settled."
Severus's private quarters were a sanctuary of warmth compared to the dungeons' perpetual chill. Dark wood paneling lined the walls, and a fire crackled merrily in the grate, casting dancing shadows across shelves lined with books and specimen jars.
"Here we are," he murmured, settling the kneazle onto a soft cushion near the fireplace. The creature immediately curled into a tight ball, those remarkable green eyes tracking his every movement. "Much better than a cold stone floor, I imagine."
From somewhere in the castle, he could hear the distant sounds of the search—footsteps echoing in corridors, muffled voices calling Potter's name. Severus felt no inclination whatsoever to join them. It wasn't his patrol night, thank Merlin, and he had no desire to spend his evening tramping about looking for Gryffindor's golden boy.
"Potter will turn up when he's ready," he told the kneazle conversationally as he prepared his evening tea. "Probably hiding somewhere, licking his wounds after some spectacular failure in Defense. The boy has a talent for dramatics."
The kneazle made a small, indignant chirp that sounded almost offended. Severus raised an eyebrow as he settled into his favorite armchair with his tea and a worn copy of Advanced Potion-Making.
"Don't tell me you're a Potter admirer too," he said dryly. "I suppose even magical creatures aren't immune to his supposed charm."
The kneazle's tail twitched irritably, and it turned its back to him with what could only be described as a huff.
Severus found himself almost smiling. "Temperamental little thing, aren't you?"
The kneazle proved to be a surprisingly refined dinner companion. Severus had conjured a small dish of cream and some leftover chicken from the kitchens, watching with bemused interest as the creature delicately lapped at the cream before tearing into the meat with obvious hunger.
"When did you last eat properly?" Severus murmured, refilling the cream dish. The kneazle's ears flicked toward him, those green eyes bright with what looked suspiciously like gratitude.
After the impromptu meal, Severus settled the kneazle back onto the cushion by the fire, adding an extra blanket. "There. You should be comfortable enough for the night."
The creature seemed content as Severus went through his evening routine—banking the fire, washing his face, changing into his nightclothes. But the moment he extinguished the lights and settled into bed, a pitiful mewing began from the sitting room.
Severus buried his face in his pillow. "Absolutely not."
The crying continued—soft, heartbroken little sounds that seemed designed specifically to torment him.
"I am not a soft-hearted fool," he informed his ceiling firmly.
The mewing grew more desperate.
With a long-suffering sigh, Severus threw back his covers and padded back to the sitting room. The kneazle was sitting upright on its cushion, eyes reflecting the dying embers of the fire, looking utterly miserable.
"Oh, for Merlin's sake," Severus muttered, scooping up the warm bundle of fur. "One night. And if you so much as think about using my bed as a litter box..."
The kneazle immediately began purring, snuggling against his chest with what felt like relief. Despite himself, Severus found his hand automatically stroking the soft fur as he carried his unexpected bedmate back to his room.
"Spoiled creature," he grumbled, settling them both under the covers. "This is entirely against my better judgment."
The purring only intensified.
ᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢᓚᘏᗢ ᓚᘏᗢ ᓚᘏᗢ
Harry had thought the argument was winding down. He and Malfoy had been trading their usual insults in the empty corridor, but Draco's tone had shifted from his typical sneer to something almost tired. For a moment, Harry had actually relaxed his grip on his wand.
Stupid, he thought now, his mind racing even as his new feline body moved on pure instinct.
"—think you're so bloody special, Potter!" Malfoy had snarled suddenly, his wand whipping up with renewed fury.
The first curse had grazed Harry's shoulder as he dove sideways, confusion flooding through him. Where had this renewed anger come from? One second Malfoy had seemed almost deflated, and the next he was firing hexes like his life depended on it.
"Malfoy, what—" Harry had started to shout, but then came the flash of sickly yellow light.
The world had twisted. His perspective shifted, the corridor suddenly towering above him. His hands—paws—scrambled against the stone floor as panic seized him. He tried to speak, to shout for help, but only a distressed yowling emerged from his throat.
What did he do to me?
The transformation hadn't been instant. Harry felt his bones shifting, shrinking, his spine stretching as his legs buckled beneath him. His fingers—oh God, his fingers—were pulling back into his hands, nails extending into sharp points. The world tilted sickeningly as his perspective plummeted toward the floor.
His jaw ached as it pushed forward, teeth reshaping themselves. When he tried to scream, to beg Malfoy to reverse whatever he'd done, only strangled mewling sounds emerged. The worst part was feeling his thoughts scatter and reform—still him, still Harry, but with new instincts clawing at the edges of his mind.
Run. Hide. Find somewhere safe.
Malfoy's voice seemed to boom from above, shocked and horrified. "Oh, Merlin. Oh no, no, no—"
But Harry was already scrambling away on four legs that didn't feel like his own, his injured shoulder sending shooting pains through his small body with every awkward step. His new ears twitched at every sound, overwhelming him. Even the familiar castle smells were different now—sharper, more complex, almost nauseating.
The potions classroom door was ajar. Without thinking, Harry darted inside on instinct, seeking the familiar shadows where he could hide and try to understand what he'd become.
The potions classroom felt enormous from this new perspective. Tables towered above him like cathedral pillars, and the familiar scent of ingredients was overwhelming—he could smell everything. Dried beetle eyes, pickled rats' brains, the lingering sulfur from yesterday's Pepperup Potion brewing.
What am I going to do?
Harry tried to think logically, but panic kept clawing at his mind. His shoulder throbbed where he'd scraped it against the door frame in his desperate flight. Every instinct screamed at him to find somewhere small and dark to hide.
He squeezed himself behind a cauldron, his new body surprisingly flexible. His tail—God, he had a tail—kept twitching involuntarily. When he tried to call out for help, only a pitiful mewling sound escaped his throat.
How long will this last? What if it's permanent? What if no one finds me? What if they do find me but don't know it's me?
His ears swiveled at every tiny sound—the castle settling, distant footsteps in the corridor, the soft bubble of a forgotten potion somewhere. Everything was too loud, too sharp. His new senses were a cacophony he couldn't filter.
When he heard familiar footsteps approaching the classroom door, Harry's heart hammered against his tiny ribcage. Professor Snape's distinctive stride was unmistakable.
Please don't hurt me, Harry thought desperately, even as some new instinct made him want to approach the familiar scent of potions and parchment that always clung to his most intimidating professor.
The door creaked open, and Harry's entire body went rigid. Those familiar black boots came into view, moving with their usual measured pace across the stone floor. Harry pressed himself deeper behind the cauldron, his heart hammering so hard he was sure Severus could hear it.
Please don't find me.
But those keen dark eyes missed nothing. Severus paused, his head tilting slightly, and Harry knew he'd been spotted.
"What have we here?" The voice was softer than Harry had ever heard it, absent of its usual cutting edge.
Harry tried to make himself smaller as the imposing figure crouched down. Up close, Severus looked enormous—his pale hands reaching toward him looked like they could crush Harry's fragile new body without effort.
He doesn't know it's me. To him, I'm just... just an animal.
When those long fingers touched his injured leg, Harry couldn't help the small cry of pain that escaped him. But instead of the harsh reaction he expected, Severus's touch gentled immediately.
"Easy, little one. Let me see."
The endearment made Harry's chest tighten with confusion. This was Severus Snape—the man who'd made his life miserable for six years—speaking to him with something approaching tenderness.
Harry found himself going limp in those careful hands, some deep instinct responding to the soothing tone even as his human mind reeled with the impossibility of it all.
Those are Snape's hands.
The realization should have sent Harry into a fresh panic, but the careful way those long fingers examined his injured leg made him pause. He'd expected roughness, impatience—the same treatment Severus showed him in Potions class. Instead, the touch was clinical but gentle, assessing the damage without causing unnecessary pain.
"Hmm. Nasty scrape, but nothing too serious."
Harry's ears flicked at the murmured words. Was Snape... talking to him? Not barking orders or sneering insults, but actually speaking in that low, almost soothing tone?
When Severus reached for his wand, Harry's entire body tensed. He'd seen that wand pointed at him before—never with good intentions. But the healing spell that followed was cast with precise care, warmth spreading through his injured leg as the worst of the pain ebbed away.
He's helping me. Actually helping me.
The contradiction made Harry's whiskers twitch with confusion. This was the man who'd spent years making his life miserable, who'd called him arrogant and worthless—and here he was, treating a random injured animal with more kindness than he'd ever shown Harry Potter.
Because he doesn't know it's me, Harry realized with a pang.
Dumbledore appeared with a flourish his panic palpable.
Oh God, oh God, Dumbledore! Harry's heart hammered against his tiny ribcage as the familiar voice filled the room. He's here! He'll know something's wrong!
Harry tried to lift his head, to somehow signal his presence, but Severus's gentle hand pressed him down against the desk. The warmth was oddly comforting even as panic clawed at his chest.
"Harry Potter has vanished," Dumbledore was saying, his voice tight with concern. Vanished! Harry wanted to yowl, wanted to leap from the desk despite his injuries. I'm right here! I'm right here in front of you!
But all that came out was a soft mew of distress.
Severus's fingers stilled on his fur. "Hush," he murmured, so quietly Harry wasn't sure Dumbledore could hear. "You're safe."
Safe? Harry's thoughts spiraled. I'm NOT safe! I'm a bloody cat! I need help!
He watched in growing desperation as Dumbledore's robes swished past his field of vision, the headmaster's attention entirely focused on Severus. Those familiar blue eyes never once glanced down at the small creature on the desk.
Please, Harry begged silently. Please see me. Please know it's me.
But Dumbledore swept from the room without a second glance, leaving Harry trapped in his feline body with only his most hated professor for company.
The irony wasn't lost on him, even in his panicked state.
The quarters fell into silence after Severus settled into his chair with his book. Harry tried to curl up properly on the soft cushion, but every position felt wrong. His injured paw throbbed, and the bandages felt strange and bulky. Worse, the reality of his situation kept crashing over him in waves.
He was trapped. Stuck as a cat. What if this was permanent? What if no one ever figured out how to change him back?
A small whimper escaped his throat before he could stop it. Then another. Soon he was mewling pitifully, all his fear and confusion pouring out in desperate little cries.
"Oh, for Merlin's sake," came Severus's irritated voice from across the room. Harry heard the book snap shut, followed by footsteps.
"What is it now, you demanding creature?" Severus appeared beside the cushion, looking down at him with exasperation. But when Harry looked up at him with tear-bright green eyes, still crying softly, something in the professor's expression shifted.
"You're frightened," Severus said, more gently. "Of course you are. Injured, in a strange place..." He sighed deeply. "This is highly irregular."
But he was already scooping Harry up carefully, mindful of the bandaged paw. "Just for tonight," he muttered, carrying Harry toward the bedroom. "Don't expect this to become a habit, you manipulative furball."
Harry's relief was overwhelming as he was settled onto the dark green coverlet. The bed was warm from warming charms, and it smelled like Snape- potions ingredients and that particular clean, sharp scent that was uniquely his.
Harry woke to the sound of Severus moving quietly around the rooms, preparing for the day. From his spot on the bed, Harry watched through slitted eyes as the professor gathered his teaching materials and straightened his already-perfect robes.
"I'll be back between classes," Severus said, glancing toward the bed. His voice was gruff, but there was something almost... caring in it. "Try not to destroy anything while I'm gone."
The door clicked shut, leaving Harry alone in the sudden silence.
He stretched carefully, wincing as his injured paw protested. Fine. He was staying put today, but only because he was hurt. Obviously. Not because Severus's quarters were warm and comfortable, or because the man had actually been... kind to him last night.
Harry padded over to investigate what Severus had left for him. A pristine litter box sat discretely in the corner of the bathroom, and beside it, a bowl of water and what looked like pieces of turkey. The sight sent horror through Harry. He really didn't want to have to use these things like a proper cat. This was mortifying.
Just being practical, Harry told himself firmly as he sniffed at the meat before taking a small nibble. I need to recover my strength.
The morning dragged on. Harry tried napping, tried exploring the sitting room, but found himself gravitating toward the window that overlooked the corridor. Every time footsteps approached, his ears would perk up hopefully.
When the door finally opened mid-morning, Harry's tail actually twitched with... relief. Just relief at not being alone. Nothing more.
"Still here, I see," Severus said, setting down a small package. "How's the paw?"
Harry found himself purring before he could stop himself.
The door opened again in late afternoon, and Severus entered looking distinctly irritated. He carried a small wrapped package and what appeared to be a proper cat bed.
"The entire castle is in upheaval," he muttered, setting down the bed near the fireplace and unwrapping what turned out to be fresh fish. "Potter has managed to disappear completely, and naturally everyone expects me to care."
Harry's ears perked up guiltily as Severus placed the fish in a small dish.
"Three separate teachers have asked if I've seen him lurking about my classroom." Severus settled into his armchair with a cup of tea, glancing down at Harry with an almost fond expression. "As if the boy would willingly spend time in my presence."
If only you knew, Harry thought, padding over to investigate the fish. It smelled wonderful.
"Dumbledore is beside himself. McGonagall is organizing search parties." Severus took a long sip of tea, watching Harry eat. "Meanwhile, I have acquired a perfectly well-behaved companion who doesn't talk back or blow up cauldrons."
Harry paused in his eating, green eyes meeting Severus's black ones. There was something almost... wistful in the professor's voice.
"Perhaps Potter has finally done us all a favor and removed himself permanently," Severus continued, though his tone lacked its usual venom. "Though I suppose even he deserves better than whatever fate has befallen him."
Harry's chest tightened with an odd warmth. Was Snape actually... worried about him?