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"You're not yourself."

Karl nodded at my words, heavily panting in agreement. He slid a clawed paw through his ebony headfur. Yellow lights flashed a silent alarm throughout the hallway. The panther's eyes would have glowed a deeper yellow if they weren't so bloodshot, as they darted frantically in all directions. The feline was infected; losing control. He knew it, too.

DEV-08B.

Devolvement as it became to be known. We hated the term, but the name stuck. Less than a week ago, we were both clinicians at the Center for Pandemic Response when a stoat came in with the initial stages of the virus. Manic and wild, the weasel gradually lost all control of himself. First hunger, then aggression, and then an unending sexual need. The stoat tried to copulate with anyone and everyone. It was a hard lesson for our intern to learn. The poor tiger became another victim when the stoat surprised her with a kiss. This new variation was far more virulent, a mutation that spread much more rapidly.

The virus spread through contact with bodily fluids. Satiating one base need pretty much ensured its spread. Driven by pure, unfiltered id.

When it was nothing more than an epidemiological curiosity, the news had joked about it turning the victim into salivating cavefurs, succumbing to primal instinct. There was no humor in the medical community. We were scared shitless. Like Hanta, Ebola, or necrotizing fasciitis, it had a tendency to show up in the weirdest places. Dry, hot environments were hit particularly hard. Fortunately, desert populations were isolated, so at first it didn't spread.

The stoat wasn't from the desert though. That was a problem. A major one. Those in the know, myself included, were split between keeping it secret as our higher ups demanded, downplaying the danger as our instinct dictated, or shouting from the highest mountains with the biggest microphones as ethics insisted. Protocols should be in place. Vaccines should be developed. Anything to prepare for the coming storm.

As I said, less than a week ago, we were both researchers at the Center for Pandemic Response. Now, one of us needed to be admitted as a patient. Soon, it would be both of us. It was getting out of control.

This was bad. Really bad.

Karl's gaze looked at the exit. His chest heaved with every heavy breath. I felt like I could read his thoughts, wild focus on escape. This was bad, but escape would be really bad. I had to distract him; buy some time for security backup to arrive.

"Karl," I kept my voice calm, paw up defensively. "Karl. Look at me."

As Karl turned around and looked at me... hackles raised, teeth bared, eyes hungry...I felt a chill of realization flow through me. The panther froze, psychotic gaze finally landing upon me, as I stood there like an idiot; tail down, ears back, timid like prey that was ready to be eaten. I couldn't help it. Instinct was a hell of a thing. With a savage roar, he was on me in a flash, his weight slamming me back against one of the doors to an observation room with enough force to illicit a pathetic yelp from my muzzle.

Karl gripped the collar of my white button up shirt and revealed my chest with a violent rip of fabric that sent buttons scattering around us. The panther pulled back, cobra like in his intent to strike. A moment of clarity flashed in the feline's eyes as he drank in my physique.

He knew I remained active, biking to work when the weather permitted. During the cold winter months, I would jog the five blocks from my home to meet him at the middle school where he dropped his kids off. We would car pool in the morning. It was only a two mile jog. Short enough for me to bring freshly brewed coffee in lieu of gas money.

"Think of your kids!" My words were as frantic as his gaze, my eyes wide. Despite being a wolf a whole head taller than my companion, I knew I couldn't overpower the feline. "Your wife!"

It may have been a mistake to remind the panther of his mate. That was the only thought that went through his mind as his eyes narrowed. Mate. All he saw was one thing. Something he could fuck.

I'd missed all the signs. Yesterday, Karl had rushed out of the clean room lab after spilling the latest sample set gathered from the stoat and our unfortunate intern, only the twenty-first and twenty-second victim of Devolution in the past decade. The panther did everything by the book, already stripping unabashed as he rushed for the shower. He tossed his personal cleanroom gear in the hazmat container en route and scrubbed every inch of his body.

"I'm okay!" Karl proclaimed, "Spooked myself when I dropped the sample tray. Better safe, than sorry, right, Ed?" The panther's smile had been reassuring, as he dressed in fresh lab gear.

Too bad I was unable to tell he was lying at the time.

When I got into the car this morning, I should have seen the signs. Karl was eating like he hadn't seen food for five days. I wrote it off as a busy day. We all forget to eat when life gets busy. And I couldn't blame the guy after his experience. Even now, I feel like an idiot, considering the three discarded Mister Burger sandwich wrappers that decorated the floor of his normally clean car, with the panther halfway through a fourth.

Not only that. The panther was antsy; jumpy on the drive in. There were signs of frustration in his speech. Extra road rage for the smallest of reasons. I wrote it all off as nerves. A result of his mistake the previous day. A mishap like that showed up on HR paperwork as a Reason for Termination. Add to that an impending and horrifying pandemic. Who wouldn't be nervous?

Funny to feel like an idiot as fangs closed around your throat. Must be exactly how prey felt after being captured.

He held me pinned to the door as his claws finished their work and stripped me of my shirt. When his paws gripped the waist band of my slacks, I squirmed and gripped for his wrists only to feel his jaws tighten on my neck. The pressure made me go motionless, knowing damn well that a simple prick from his teeth would seal my fate.

Karl's jaws eased up with my compliance. The panther was careless in his assault, claws scrapping through my fur as he ripped my pants open. Even in that situation, I felt a rush of shame as my coworker exposed my sheath to the air. I remained immobile, unable to talk against the feline's jerky movements. The panther's jaws trembled around my neck with an excited snarl. Hungry. Yearning.

"Karl." My voice was more a whimper than I had hoped, "Don't do this. If...if we get you to the lab...we can sedate you. There's still a chance!"

I thought my pleas fell on deaf ears, but Karl paused. For the briefest moment, there was a lull in his insanity. Sharp teeth loomed in my vision when the feline pulled back.

"No, Ed," the wild glow remained in his gaze as his head shook. "Ed, Ed, Ed, Ed." The panther repeated himself, half soothing, half excited. "You know..." He laughed uncontrollably, "You know its only a matter... of time until I'm..I'm..." The panther's head bobbed like he had trouble holding it up, but his manic grin returned, "Maybe you can get help in time, Ed, but I'm going to have a bit of fun first...while I can still enjoy it."

There was no regret in his voice or his actions. The mania and single-minded focus behind those eyes was frightening as he pinned my shoulders to the door. The rumpled, aggressive snarl vanished from his muzzle. Tilting his head slightly to the side, he leaned in, hot breath blowing into my ear as his maw came within inches of it.

"Doctor Edmund Krantz," his whisper tickled the fur of my sensitive ear. I closed my eyes and held back a gasp as his paw closed over my sheath. Even now it betrayed me as it began to swell. "I've seen your stares, when you think I'm not looking. I know you want this."

_Oh shit... _

My head shook. Not like this. While I never kept my orientation secret from my friend, I never wanted it to be like this. I never made a pass at him. I had always been a good wolf. Karl was a happily married man with two kittens and I respected that. I'd kept my damn eyes to myself. Every time he stretched at his desk. Every time he bent over to retrieve an errant pen. Even yesterday when he frantically stripped out of his infected gear. The panther was taken. He was straight. Nothing more than eye candy. I expected it to remain that way.

Now, the bastard was turning all my wet dreams into nightmares. Even as a grown-ass wolf with two doctorate degrees under my belt, a healthy stream of one night stands, and an endless amount of pornography, I still pined for the unattainable.

Karl's muzzle was twisted when he leaned back, this time with a smile instead of a snarl. "Let it happen, Ed." He leaned in again, his intention clear as his eyes darted to my lips.

God, I wanted nothing more in that moment than to kiss the panther. Wanted it more than escape, salvation or self preservation. Even my body tried to convince me, sheath filling more in the panther's firm hold. It took every ounce of effort on my part to turn my head away, Karl's lips missing their mark by inches as he kissed my cheek.

The panther's lips were warm with the fever ravaging his brain; wet with his infected saliva. He was burning up with the third stage of the fever. The final one before all control is lost. Twenty four hours from exposure to full infection.

I could feel the heat radiating from him, which only made my desire for the cat grow. It was cruel that the one thing I desired most would be a death sentence for me. I put my paws against him, as if that would stop his assault. His body felt strong; firm.

Fuck...

"Mmmm," Karl purred hard enough for his form to tremble against my touch. "Don't fight it, Ed. Ed, Ed, Ed..." The cat's fingers began to play with my sheath, stripping the sleeve back to assault the sensitive flesh within. I shuddered.

His hot breath blew into the fur of my throat, now exposed to him as I had my head turned. He took the offer and slowly ran his wet tongue along my neck, leaving a hot trail of saliva in its wake. Study of DEV-08B was in early stages still. Considering Karl's infection, I began to think infected fluid didn't need to be ingested, but absorbed. The infection took longer, but the results were apparently still the same. Although there is no telling if his previous mishap involved it splashing in his eyes or mouth.

Just before the cat's tongue found my lips, I found the strength to push him away. It was harder than I expected, sending Karl back a couple paces to collide with a desk behind him. In my attempt to escape, distraction be damned, I forgot about my pants around my ankles and stumbled to the ground with a grunt. Frantically, I tried to kick them off, only to get them further tangled when my shoes wouldn't pull through.

"Oh Ed...Eddie Eddie," Karl's lidded eyes danced with every flicker of the emergency light, making him appear far more dangerous than he already was. They regarded me as prey insnared in a well laid trap, "I love the hunt. It excites me."

I turned and scrambled away the best I could with my legs tied together. My paw went for the exit door to the observation wing, but it was sealed tight with quarantine procedures.

Everything was still so new at the facility, haphazardly thrown together when it became apparent Devolvement was becoming a problem. Kinks associated with IT were still being ironed out. Like the fact that the elevators kept going into 'fire' mode and shooting down to the lobby when the quarantine alarm was pulled. Janet from IT was still working out the bugs, but she was fresh behind the gills. Hell, even the Fire Alarm would override the quarantine protocol at this point, unlocking the exterior doors even if the quarantine had locked them. It would seal off the hardened exit of the laboratory further in the facility, to ensure the fire wouldn't spread considering 90% of fires were caused by misjudged chemical mixtures, but open up the sealed medical and observation wings. My eyes darted to the Fire Alarm, but I knew that could be a move that could trigger doomsday if there weren't an army of security outside.

I was truly trapped.

Karl worked his pants open and revealed his excitement, an enthralling sight regardless of his condition. The panther's stride was leisurely as he approached, a hunter with the confidence that his meal was secure. Now it was time to play. Licking his lips, Karl began to lewdly stroke himself, growing to full hardness as he closed the distance.

It sucked so much that all my dreams were coming true in this nightmare scenario. I couldn't pull my eyes away. It only took a couple strokes from the panther's paw to get the contaminated fluid to flow. A strand of viscous seminal fluid drooled from the tip before it was spread over his impressive length. I always thought my fantasies exaggerated certain parts of the panther's anatomy, but apparently it never did him justice.

"Karl," another breathless whimper as I shook my head, staring at his impressive maleness as it got closer. "No. Please."

My head swam when he stood at my feet, close enough for his musky scent to overpower every other sense. I could practically _see_it coming from him, the feline odor intoxicating. A lewd grin split his muzzle as his paw continued its work, pre dripping onto my shoes.

"God damn," Karl's voice came with a seductive purr. The fever must be making him delirious, yet he was so focused. I'd have written this behavior down in my notes if I were observing it, but now, it was the furtherest thing from my mind. "You look so sexy Eddie...Ed Ed Ed."

The panther's eyes closed as his paw stroked faster, as if fantasizing about me. I felt my shoulders slump as he did so, my eyes returning to his cock as he slowly placed a foot on either side of me. His slick length was level with my muzzle, his intentions clear. I knew I should have run as that vile fluid dripped hotly down upon my throbbing shaft. Dangerously, I licked my wet lips, even as his motions sent his precum onto my muzzle. Some hit my nose.

"Ed," Karl's other paw slowly rubbed the fur between my ears, drawing my attention upwards. "I'm...so sorry Eddie. Ed Ed." A look of sorrow flashed across his expression, but it was gone with another rotation of the emergency lights. "I...can't stop myself."

Regardless of representing such a huge threat to my personal safety and well-being, Karl was still a massive weak spot in my armor. Soft, furless paw pads gently caressed my ear, unnaturally warm due to fever. The touch felt magnificent, even in that moment, comforting and distracting in the worst ways. It worked its way to the back of my head.

"You'll understand soon enough."

It was impossible not to pant. My head followed Karl's guidance. So dazed and enthralled, I didn't realize what was happening until my nose was buried in the panther's pubic fur. My mouth tasted different. Funny. I knew it had to be psychosomatic, but I still didn't want to swallow the tainted gift left by the panther as his cock slid along my tongue. A salty, bitter fluid coated my muzzle.

Yet, I fought. The urge to swallow was strong, but if I swallowed, it would be real then, and I knew the virus would be inside me. I let my drool gather, then flow from the corners of my muzzle. My whines were muffled around the panther's dick and the sloppy sounds of my lips dragging along his hot flesh as he withdrew his maleness, only to feed it to me again. And again. And again.

It started off gently enough as both of Karl's paws took a grip of my head, holding it in place as he steadily muzzle fucked me with more force, "Oh yes...You'll understand...You'll undertand."

My eyes began to water as I worked at angling my head so he couldn't drive his cock into my throat. The effort made my jaw ache. I considered just biting the panther, but then what? A muzzleful of infected blood and an already psychotic panther made even more angry. Plus, I couldn't drive myself to do that to my friend, regardless of his condition. Or what he was doing to me.

The force of his thrusts began to bang the back of my head against the wall behind me. Defensively, I put my paws against his hips in an attempt to stop the assault and prevent him from sinking his shaft deeper. Karl growled and doubled his efforts as I began to grow dizzy. The combination of blunt force trauma to my skull and the lack of air doing their job.

"Fuck Ed," the panther panted. "If I knew your muzzle was this good, I'd have fucked it a long time ago." His hips swayed as they tried to get the exact angle required to push his pulsing tip into my throat. He was unable to do so, his frustration audible in his words. "Mmm...not even Candice was this good this morning, but at least she swallowed."

What?

No no no no! This was bad! Karl's wife was a vector I never considered, but should have. There was no telling the consequences of her wandering free in a populated area. If infection occurred this morning, there was still time, but that was the least of my worries at the moment.

Frustrated, Karl suddenly pulled back, impressive maleness popping free from my lips, "But that's not what I want anyway."

In an amazing show of strength, the panther gripped the collar of my lab coat and wrenched me from the floor. The fabric held strong as I was pulled to my feet with the effort one would show lifting a bag of groceries. Still tied up in my pants, I struggled to keep my footing as the panther twisted and sent me stumbling against the desk. Knocking the breath from me, it left me panting hard, but I quickly scrambled over the top in an attempt to put the desk between myself and the feline.

Karl was faster. He grabbed my pants and tugged my knees out from under me, sending me to my belly across the desk. Twisting, I tried to kick him away, finally finding my fight or flight response in that instance. This wasn't Karl. This wasn't my friend. This was a creature under the sway of a very dangerous disease.

Unfortunately, that realization came a bit too late as the panther caught one of my kicking legs, effectively restraining the other in the process as my pants provided little leeway. He made short work of freeing my legs of their binding. Before I could retaliate again, his paws caught my thighs and dragged me to the edge of the desk. Placing his body between my legs, he took away every bit of leverage I had.

Despite the futility in it, I struggled. My paws batted at his chest as my legs kicked empty air. I could feel his arousal grinding between the valley created by sheath and thigh, leaving my groin wet. I glanced down to see our arousals grinding against each other.

"Karl!" I snarled and continued to fight, my paws pushing at the desk to try and pull away. "Don't do this!"

My pleas fell on deaf ears. His grip held tight as he worked my legs up and over his shoulders. Karl's form shivered against me as he giggled with delight, his muzzle twisted in a snarl of its own.

I was glad I fought back for the first time then, even if it was a pointless endeavor. Fruitless. He had me, and his unreserved strength was greater than mine. His desire to fuck me was greater than my desire to resist. My struggles were on principle alone. His eyes were locked on me, but I only saw it in my peripheral vision as I tried to find a way out of this.

Karl's hips continued their movement, shaft following the natural curve of my rump as it finally caught behind my balls. Each thrust poked my rump now, getting dangerously close to my unprotected tail hole. I felt on the verge of tears in my hopelessness.

Then he was inside me.

Aided by a coating of slick precum, which would surely have traces of the virus in it, his tapered cockhead spread my tense tailring and speared deep into my bowels. My back arched and I cried out in shameful pain as the panther easily hilted. Karl took advantage of the moment and leaned in, catching my unprepared muzzle with a firm, wet kiss. The panther's tongue delved deeper than his cock did, licking along my molars as he drooled openly into my mouth.

The feline was in me in more ways than one. I was infected for sure, no doubt about it as my throat quivered...then swallowed the mouthful of his slick offering. If that weren't enough, I could feel his feverish excitement as his cock jumped within me. I knew that wet sensation wasn't blood as he painted my passage with his slick preseed.

All fight left me when he rolled his hips, continuing to kiss me like a horny teenager. My paws went from swatting his chest to gripping his sides. To his credit, Karl maintained some control and held firm, letting my body adjust. My first kiss from Karl was a tainted gift I couldn't help but accept as his muzzle held firm, tongue caressing my teeth and cheeks as he coated my maw with his saliva.

I gasped, despite the reasons, when he slowly withdrew. With surprising speed, my body adjusted so the next thrust brought a moan from me, my hips lifting to meet his motion. What was worse, I couldn't pull away from the vile kiss.

God help me, I didn't want to.

As our bodies rocked against each other, I lost all fear of the virus, unconcerned with my own well being any longer. Unconcerned with the need to delay the nearly feral cat. I only wanted the panther and he only wanted me. I moaned into the kiss, hungry to experience more of this burning feline.

Karl let my legs fall from his shoulders to hook around his hips as he slipped his arms around me. Once again, the feline lifted me effortlessly. My legs squeezed tight as my paws clutched his shoulders for support when I felt weightless. The panther took a step back and sat heavily in the chair behind him. My legs untwined to rest on the floor, straddling the panther.

Breathless, we both pulled back from the kiss, a strand of saliva connecting our muzzles as we looked into each others eyes. It wasn't lost on me that I had all the leverage now, that I could probably make an escape. Karl must have been confident I wouldn't, his paws no longer holding me with any force.

He was right.

I shivered in his lap before giving a slow roll of my rump against his thighs. The new angle allowed his cock to rest deeper in me than before, touching spots that screamed to be caressed. My own shaft leaked between us, probably the last time my pre wouldn't be awash with infection. My ears splayed and jaw remained slack as I took the initiative. Keeping my tail hiked, I began to bounce in his lap.

I slumped forward, burying my nose in his scruff. We both knew I was as compromised as him, but no longer cared. His scent was magnificent, even if it held the faint odor of illness. His intense heat was unlike anything I ever felt before and I pressed closer to him to feel more, eager to become one with him in every way. Apparently Karl felt the same, starting to drive up into me at a steady tempo that I kept pace with. Soon, our bodies clapped together with each thrust, the fuck growing harder.

This was, by no means, my first time with another male. A steady stream of one night stands meant I kept my libido in check, but they were never mind blowing in any way. This, on the other paw, was beyond anything I had dreamed. I could feel a building pressure in my balls that cascaded to the base of my shaft. A threat of my coming release, and I hadn't so much as touched myself. Never, in all my years, did I manage to get off paws free.

"Oh god," I groaned into Karl's neck as I held tight to him, my thighs beginning to quiver. "Karl...Fuck! Your cock feels good in me."

Karl trembled under me before his motions stopped, every muscle in his body tense. "E...Ed?" The panther's tone was full of confusion as his paws caught my hips and held them immobile. To my shame, I eagerly squirmed in his lap, biting back a needful whimper. "Oh no...Oh fuck..."

I pulled back and looked down at him. The look of surprised realization in his eyes made my ears splay, as if it struck him like a lighting bolt. My lustful words must have shocked him out of his anger and lusts, bringing some coherence to his fevered brain. I felt a twinge of regret, as if I had been the one taking advantage of him.

"Oh god," the panther's head shook. "I'm...so sorry."

There was still confusion behind his dismay, incoherent about the situation as if waking from a very real and very exciting dream. The tone in his voice was genuine though, broken mind trying to piece together his reality during this fleeting moment of clarity. This wasn't the monster that only moments ago forced himself upon me, but my good friend and colleague.

Struck by an overwhelming feeling of dismay, something in my head told me this was probably the last time I'd see this side of the panther. The virus was rapidly devouring this civilized doctor and I wanted to hold on tight to him in that moment. Bring him some comfort as it took hold. His face looked haunted, shaken, and I could see the crushing loss sinking into his eyes as he felt himself losing it.

All of it.

It must be a hell of a thing to lose your mind and know it.

"I'm..." The panther's eyes were watering, hopefully due to the fever, "I'm...married?" He shook his head, unsure of his words, as if trying to grasp an image that wouldn't stick; a memory just out of his reach. I felt my heart ache at his struggles, "I'm..."

I couldn't bear to see my friend go like that, his last conscious moment being of regret and sorrow. Despite what he had done to me, the unforgivable even, there was no going back on that. I wanted...no needed...to make sure he was comforted in those moments, even though I'd probably not get the same consideration when the illness overtook me.

"Karl," I bit my lower lip and nodded. "You are married. We're married. Remember?"

"Oh god," Karl's head lulled back on the seat as his eye lids fluttered, paws easing enough for gravity to do its work, sinking me back to the hilt upon his maleness, "Yes..."

"That's it," I panted, unsure of who the monster was now as I continued, "Remember." My voice was a soft growl as I stole more pleasure from my sick friend, "Pastor Kent, the black bear...Pronounced us Doctor Karl and Edward Trolley."

A smile drifted over the panther's face, the false memory bringing an image that made my friend happy. His head nodded, "I do...I do remember."

The panther leaned in and kissed my throat, once again moving with me as we made love. And that's what it was there and then. It was making love. He had all reservations cleansed from his psyche. All doubt and regret. The elation I felt in that moment was ill deserved as I made these final moments more comfortable for my friend.

One of Karl's paws came up to caress my cheek, trace my muzzle before gingerly plucking through my whiskers, "You're still as beautiful...as you were on that day."

I felt my own eyes tearing up as the panther took me into another messy kiss, his paw now clutching the thick scruff along the back of my neck. For the moment, I let him, suckling on his tongue passionately as he began to growl. I felt his body grow tense against me as I shared my friends moment of lucidity. It was probably going to be his last one.

Finally, I pulled back from the kiss and kept my nose against his own. He gulped, ears and whiskers flat as I began to move in his lap again, "You're with me now. I'm not going anywhere. Show me how much you love me."

Karl's yellow eyes wavered, a strange mixture of lucidity and mania normally reserved for a druggie fighting to maintain control. Despite that, his shaft slid in and out of me with ease, further proof of the copious amount of precum being leaked into me this whole time. The slickness paid off as he started to fuck me harder. Every stroke hammered into my tail hole as deep as possible.

The panther bared his fangs as he went faster and faster, a frightening snarl of pleasure. Loss, acceptance and finally love played through his expression before changing into hard, steel-edged anger when his paws once again gripped me tight. Finally, his sharp claws drew blood, the metalic scent mixing with the already heady aroma of our rutting.

I clutched his forearms, showing my pain with a snarl of my own, as my colleague claimed me. My cock bounced between us when I leaned back to push into each of his violent thrusts, leaking a steady strem of pre all its own. To my amazement, Karl reached down a grabbed my swollen length in his paw. His angry, glaring rictus of a snarl never left his muzzle for a single moment as my Karl maintained the last shreds of control enough to care for me in this tiny way that... that...

A strange feeling of pride rushed through me as the panther began to stroke me; to bring me pleasure. Even in this ailing state, my poor, formerly straight coworker was thinking of me, mind-stripping infection be damned. Hitting my knot with his moving paw made me cry out again. Unable to keep pace with the panther's frantic thrusts any longer, I pressed into his lap hard and rocked while his paw sped up.

"Karl!" Tears welled in my eyes at the overstimulation of...everything. I not longer considered the factors of the situation, or why I was doing it. This was no longer an attempt to keep my infected friend distracted. I felt lost in my own haze as a hunger knotted my guts. "Karl! Oh god! I'm gonna...I'm going to cum, Karl."

The pressure became too much. Going rigid, my loins hunched erratically against the panther as I lost all control, as much a feral beast as the creature fucking me. Our eyes locked, snarling muzzles within inches of each other as we both drooled openly now. Trembling in my lover's arms, I came.

Hot, wet seed shot like a gyser from my throbbing tip with enough force to hit the panther's chin...twice. Despite the mess, Karl never missed a beat and continued to milk my balls, the next shots painting our chests, then my belly. His black furred paw was a blur around my red rocket before he gripped my knot and finally got that howl from me. It swelled in his hold as I sang my praise.

By the time I returned my gaze to him, I could see him lose himself. Second by second, my friend drifted away, face frozen and snarling, muzzling snapping and agressive as spittle flew from it. The only thing left was that look in his eyes, a recollection of us. He was in there, even as his thrusts grew more animalistic by the moment. Breath heaved from his chest as his growls became grunts of pleasure.

While there...he was less there. Knowing full well the progression of the disease and its effects, I knew Karl was still alive, but this was the last of him. I was watching the Karl I knew die in front of my eyes as his heart turned to ice. In moments, he would no longer process anything to do with empathy, emotion, or even language.

"Karl," my words were labored as I tried to come down from my orgasmic high. Nothing more than a whisper. I felt so good, even in that terrifying moment, my afterglow blooming in me while I was rocked hard in the feline's lap. "Come in me...before you go."

That pissed him off. The panther howled in a frenzy as he suddenly pushed from the chair. I hit the floor hard, but hardly felt it as the feline never missed a beat in his assault, hilted until he rest over me. Karl's actions grew wilder as his mind closed off more and more, succumbing to the rage and rabies like effects of the virus.

The Karl that just showed me mind blowing pleasure was gone. I could see that...and feel that considering the change in his movements. Claws scrapped against the floor under us as he tried to gain purchase, like that would allow him to go deeper inside me. Frantic to cum, frantic to gain that delicious release of endorphins and dopamine the virus fed on. This was no longer for pleasure, but to feed that instinct to breed.

Purely savage and joyful, my former friend threw back his head and gave his last ululation. With a harsh thrust, I finally felt the textured bumps of his barbs scrap my inner walls as he hilted, cock spasming and jerking within me. Despite my fear, my legs held his hips tight, joining in his pleasure as I felt his fever hot shaft flood me.

I wish it wasn't the case, but his cum felt so thick and voluminous within me. I knew it was the virus that made his hormones turn everything up to eleven, which included fluid production. Every rich, thick, ropy shot of cum in my intestines only reminded me how infected I now was, carrying countless numbers of the virus, each drop enough to infect another person. There was no doubt it shortened my own time on this earth drastically. Days were turning into hours considering every point of infection I experienced. Swallowing his saliva was bad enough. There was no telling what a direct injection of the virus would do. Might as well have injected a syringe of his blood right into my arm.

And I didn't care.

If anything, I felt unusually angry that my time with the panther was ending. Karl held firm, as deep as he could. Part of me knew it was the virus driving him, urging him to ensure infection, but I still felt so close to the male. He thought we were married now. I'd loved him from afar for so long, holding back everything out of respect. Now I had him, and he'd... well, it was ironic. I was always so careful to wrap up and only have protected sex. I was an epidemiologist, and knew all the dangers of STDs. But now the first time I was having unprotected sex with another fur, and he was infected with a DEV of all things. We shared it, shared everything, just like a real married couple.

Behind Karl, I saw red and blue flecks flashing, out of tempo with the yellow emergency lights, through the locked door keeping the observation wing secure. Like jitters in the texture of reality. Oddly, I felt angry at this as well, further ending our time. I had to remind myself this was the whole point. The automated protocols told the security force of the problem and the nature of the outbreak. A coded message in the alarm system kicked in and sent out warnings to all required personel when the breach first occurred.

By delaying Karl these last fifteen minutes, I had cut off his ability to escape, knowing the officers outside would shoot on sight of any errant personel. That was the order, vetted by the ethics council, approved by the medical board, reviewed by congress, and stamped by disease control. Shoot-to-kill. Processed through bureaucracy and left to some poor underpaid fur to carry out. Outside, whomever was there would be setting up a perimeter. The fact they were out there with those strobing, flashing lights made sure I had made the right call in not pulling the fire alarm.

Then why was I so angry at them?

Karl couldn't process that anymore, though. Probably couldn't even open doors. There was no way he would do anything aside from charge the barricades in search of more prey. Over me, the feline remained taut, every muscle coiled as his intense climax began to subside, the flow within me ebbing away. His head was pointed toward the ceiling in a silent howl.

"K..." I panted again. "Karl?"

Karl's gaze darted down when I made that sound, as if seeing me for the first time. There was nothing in them. Karl wasn't there anymore. A wild animal stared down at me. For a moment, I mourned my friend at his passing.

The panther's hackles were up, muzzle contorted in a fiendish snarl as his appearance seemed to shift drastically. His barbs scrapped the inside of my ass, lodged as nature intended. Anger was painted in his expression. Angry at being 'stuck'. Angry that he couldn't find a new partner, unused by him.

Angry.

And that made me angry. It pissed me off that he was going to run off. Infuriated to an unreasonable degree...oh god why was I so angry? I might have been justified that I'd been given such a bad hand, that Karl had done all this to me. The researcher in me knew it had to be the virus talking. And that even made me angry that it happened so fast!

During the small time we had to research the virus, we saw the startling effect of full infection. Amazingly, the virus drove the infected to search out new victims, moving on quickly after spreading the infection. As soon as an infected individual succeeded in attaining orgasm through climax with another individual, their post-refractory period became one of the desire to move, travel, hunt.

Infect.

It was the main reason murder wasn't normal among the infected. They weren't interested in that. At least from what we've witnessed. Trapping two subjects together to see what would happen over the course of an hour was rightfully forbidden by the ethics board, obviously.

Karl gave a painful pull in an attempt to dislodge himself, his rage clear. My ass was gross to him now, used and infected by his cock. There was no more use for it. No more use for me. His attention was not on me, but on being tied.

With unexpected suddenness, Karl's foaming jaws snapped forward and bit down hard upon my shoulder. I howled out in pain as I felt the sharp prick of his teeth pierce my flesh and sink deep. Yet another site of infection, as if it really mattered anymore. I was a dead wolf walking. With a growl, he bit harder as I batted at his chest. It was such a strange position to be in considering his shaft was still lodged within me.

Somehow, I managed to get a bit of leverage and put my knees under him, throwing my legs out and pushing him back. A painful howl erupted from my muzzle as his cock tore free. I'm not sure where the strength came from - probably the virus - as my legs hefted the delirious feline with enough force to send him colliding against the chair behind him.

Like a cub denied candy, the creature that had once been Karl flailed in a rage filled fit on the ground. It only lasted a moment before he sat up and snarled at me again. Frantically, I moved to all fours and crawled haphazardly to the open door of a nearby observation room. Behind me, I could hear the panther scrabbling, claws scraping the ground in pursuit.

No sooner did I close the door before I felt the full force of the large feline collide with it. I pressed my feet against the door, but it still bounced with the panther's weight. Even with my full strength against it, Karl threatened to push through, but I held firm. Finding his prey unaccessible, the panther next went to the reinforced glass and began pounding on that to no avail. With a final hammer on the window, the panther's attention suddenly darted to the right, further into the observation wing, before he darted off away from the room I now occupied.

I stayed put, feet against the door as if it were still keeping my hunter away. Wet heat flowed freely down upon my tail from my gaping asshole. I was unsure of what it was, but I didn't bother checking, my mind on more important issues.

I felt like a coward. I didn't want to die, especially being killed by my friend. Irrationality or hope, or both, made me think that if I survived this encounter I might be cured somehow. This lab wasn't the only one conducting research on DEV-08B. Perhaps another lab had a cure and, hearing my plight, would fly out a vaccine dose and...and...

That was stupid. But hope is stupid, and necessary at the same time in moments of duress.

Now, hope only made me angry.

I told myself it was the infection. Slowly breathing, I attempted to steady my nerves and keep my thoughts rational. For the moment, I stayed put; eyes closed and teeth bared. Motionless with the door keeping me safe. I closed my eyes to ease the throb in my head.

Flash.

Flash.

Flash.

I could see the strobe lights through my eyelids. Blood churned in my veins. Breath growing quick again with fear and anger and despair and relief. Gotta love adrenaline.

For the moment, I was alive. Karl was further away. The quarantine protocols were in place and the whole facility was locked tight; there was no way out. I was stuck in here with Karl, but safe for now. Eventually, he would come back for me and the ethics board and researchers would have their answers about what would happen when two infected subjects encountered each other after the refractory period wore off. No medical board approval required.

Just a coroner.

Gradually, I opened my eyes and moved to my feet, balancing myself upon shaky legs. I looked down at myself, well groomed fur disheveled and wet with a mixture of drool and cum, darkened with the blood running from the bite on my shoulder. The area under my tail stung hard enough to make me hiss as I took a cautious glance out the observation window into the hall beyond. Bright yellow lights illuminated an empty hallway, the left leading to additional observation rooms and the darkness beyond with the double doors of the exit to my right. I knew they were sealed, but I could bypass the quarantine with that little bug in the system. Trigger the fire alarm and I'd be free.

Yeah, and the security team wouldn't open fire on a naked and bloody wolf.

I could taste Karl on my mouth. It had been...a much better kiss than I ever would have expected from him. Unfortunately, the memory was tampered by the white hot anger growing inside me. Indignation that I would never see my parents for the holidays. Annoyed I would never hold my niece again. Furious I'd never see another Bayshore Star League baseball game.

Fuck! My season tickets were going to be resold too!

A scream of shock and alarm brought me out of my self pity. Followed by a banging that sounded like fists on metal. The commotion only grew in intensity.

Oh no...

Beyond the observation wing was a security office, there to monitor access to the medical wings and laboratory. With quarantine measures in place, the medical wing was sealed tight, much like the observation wing. There was no need to seal the laboratory. Of course, the door to the laboratory could seal, but only if the fire alarm were triggered...which would counter the quarantine protocols and unlock everything else.

My eyes darted to the fire alarm out in the hallway, the metalic red flashing with each strobe of the lights. Already losing my thoughts, I fought hard to concentrate. I had one more thing I really needed to do. I pulled out my phone and texted Sciowitz, the Director that Karls' wife was probably infected. There would be quarantines and observations and treatments for her. I wouldn't be able to do any of it.

Message sent. Message read. Sciowitz is typing. I chucked my phone down the hallway in a dim clatter as a surge of anger flooded through me.

Fuck.

Telling her about quarantines and observations jogged my memory. Six people. There were six people here. Five for blood draws were in the medical wing and one doing further research in the laboratory. I tried to maintain my concentration by thinking of their names.

Richardson. Drakpan. Steve...Stevenson? Steveman? Fuck. I couldn't recall. They weren't my patients. I only had to sign off on their bloodwork orders and had only reviewed them before my shift ended. They weren't at risk, or 'hot' as we like to say. All five were voluntary. Their rooms weren't locked, but the medical wing was sealed.

The bigger problem was the sixth guest. I knew where the other overnight 'guest' was staying. The laboratory. Perkson, the mouse from International Doctors, was there. She requested staying away from everyone else so she could work and they wouldn't bother her. Of course, she got her wish because she was at the forefront of DEV-08B research. No one knew the virus like she did.

Bet she fucked like a virgin prom queen too. I wondered what her cunt would feel like squeezing my thick shaft. An image of the mouse, squeaking under me as I fucked her filled my mind. It made my sheath swell. Funny thought for a devout, life long homosexual like myself.

No.

I couldn't lose it yet, although that strange hunger grew like the anger in my gut.

Bang! Bang! Bang! A snarl that must have been the panther. Then a scream that definitely wasn't Karl. Neither was the cry for help that followed. It brought me out of my schizophrenic thoughts.

Cautiously, I slipped out of the safety of the room, my head abuzz with what I should do. My focus was on the fire alarm. My heart raced as another snarl echoed through the wing. I knew Karl was in the security office now, trying to decided between going left for the medical wing or right for the laboratory.

I leaned against the wall, light headed and dizzy.

Flash. Flash. Flash. Janet's shitty coding. The fire alarm stood in front of me. My paws began to shake as I lifted one and touched the metal.

If I pulled the alarm, that would open the medical wing to Karl's rage. He'd rush into the hall and the five new victims beyond. Karl was more than a match for any of them. No. He was more than a match for all of them. And all the panther wanted to do was infect. That would be five new victims with the quarantine protocols released.

There were barricades up, I'm sure. Well armed furs in body armor. Unfortunately, our research didn't go into anything involving just what was required to bring down the infected. It wasn't like we could physically harm the victims during our studies. Would they even feel pain or would they behave like someone overdosing on PCP? Thanks, ethics.

Flash. Flash. Flash. Janet's shitty coding.

My fingers hooked into the handle, ready to pull the fire alarm.

On the other hand, I could sit here and keep quarantine up. Do nothing and let Karl get Perkson. Fuck, rape and infect the best source of information for Devolvement the world had. Could I let my last meaningful act on earth be the willful murder of another fur to save five? Or...let him kill five so I could die knowing I didn't _intentionally, and actively _kill someone?

"What the fuck do I do?" I breathed out, staring at the lever.