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Ax had paced for hours in his living room after he had taken several showers, gripping his head in panic as a million things ran through his mind at once. It had felt like only a few minutes ago he had been racing home in order to take Carter, the now snow-leopard patterned dildo that still rested on his carpet, and turn him into his own cock. His roommate had contracted phallicitis, a STFD that caused the transformation of the feline into a type of living dildo, though if the wild dog had gotten home in time and penetrated him he would have lived on as an extension his own member. Unfortunately he had arrived home too late, and opened the door just in time to get blasted with the transforming creature's last bout of cum that caused him to get infected with the same disease.

Suddenly the phone rang and broke the canine out of his panic, he immediately raced over and picked it up. "Hello?" He said, his already thickening tongue garbled his words slightly.

"Hello, this is Dr. Francisco Azinsan from the Advanced Research Center on Sexually Trans-Formative Diseases, I was referred to this number by a local physician in the area." The voice on the other end replied in a methodical tone. "Am I speaking to a Mr. Carter Artes?"

"No... no this is Ax." The wild dog explained with regret. "Carter is my roommate, I tried to get here to help him with his condition and I was too late, now he's just a cock on the ground and I'm infected with the same thing he was."

"Oh my, how unfortunate." The voice replied. "Still I may have good news for you Mr. Ax, I was calling because we have made some rather recent breakthroughs in our treatment for several STFD's including the phallicitis that say you have contracted. If you will come down to the lab as soon as possible we can get you signed up for the clinical trial that I had originally intended to invite your friend for. Just come down to this address and we'll get you set up right away."

Ax felt a small glimmer of hope rise in his chest as he scribbled down the address and thanked the man before he hung up the telephone. He could feel his heart pound in anxiety as he got a new set of clothes on; more than once he had to wipe a small drop of drool off of his lips as he did so. While he wasn't there during the majority of Carter's transformation he knew that he was well into the beginning stages of the disease, as he passed by his mirror and opened his mouth to see a very uncharacteristic cock-head that had formed on his more cylindrical tongue. He quickly shook his head and pried his gaze away from the mirror, he knew staring at it would do him no good and instead grabbed his keys and made his way towards the door.

As Ax's hand gripped the handle to leave he paused and looked back, once more looking at the feline member on the floor. He wondered if he could potentially be cured then perhaps his friend could be too and darted back into his kitchen. Five minutes later he was in his car and driving down the road, the corners of a plastic bag sticking out of his pocket...

*********************************

It was approaching dusk when Ax's car pulled up to the entrance of a very large, white stone building. He had passed by the structure more than once and had always wondered what would need such a large facility, now he knew why as he pushed open the glass doors. Inside the lobby was devoid of souls, the only sounds were the sound of the water feature that was tucked in one corner and the soft beeps and whirrs of the electronics that glowed in the darkness. For a second he wondered if he had come to the wrong address or at the wrong time when he heard a voice behind him, the wild dog turned around to see a rather colorful gryphon/fox hybrid in a white lab coat stand up and put a magazine aside. "Mr. Isles, it's a pleasure to meet you." The other male said as he shook Ax's hand.

"You can just call me Ax, Dr. Azinsan." Ax replied nervously as he looked around. "Did I come at a bad time?"

"It's just after hours, and feel free to call me Frysco. We aren't open to the public but we still have a full night staff in order to tend to cases like yours." Frysco explained. "Now if you'll follow me we have a guided tour followed hopefully by paperwork to fill out in order to arrange your extended stay here. But first, do you mind if I take a look at your condition?"

Ax sighed internally and opened his mouth while the gryphon pulled on a pair of latex gloves. It had begun to grow difficult to keep his muzzle shut in the first place as he could feel his tongue throb with pleasure every second it was within the confines of his maw. Frysco pulled out a penlight and shined it on the affected organ, his fingers probed the insides of the canine mouth for a better look which inadvertently stimulated the unnatural organ and caused it to stiffen. By the time the scientist was done the 'tongue' stuck rigidly several inches past Ax's lips and the wild dog's main member had caused a severe tent in his pants from all the oral stimulation.

"Seems like you're still in the early stages, that's great news." Frysco finally stated while he pulled off his gloves in an aseptic manner and dumped them in a red biohazard bin. "Now follow me and we'll get started."

For the next hour Ax was introduced to the main branch of the facility that was dedicated to the study of STFD's. Most of it were labs and other such work areas where a number of anthros dressed in a similar manner to Frysco were either focused on instruments or computer screens. When they got to the area where the gryphon said he would be staying at however the setting changed dramatically. It looked like the quarantine area from some sort of sci-fi movies, the entire room was divided into rooms that were not much bigger than his living room and were furnished with a bed and toilet and the walls were made from a clear glass-like material that exposed the creatures within that were completely naked.

"One of the drawbacks of needing 24/7 observation is that you won't have much in the way of privacy." Frysco explained to Ax. "The walls will become frosted when you need to use the bathroom but other than that I'm afraid it's all naked all the time." Frysco turned around when he noticed that his charge no longer followed him and noticed that the canine stared at a horse that had a number of small black tentacles that wiggled freely from his back, chest, and his orifices. "Ah yes, that's a particularly interesting STFD that's just cropped up in the last few weeks, those tentacles would eventually overwhelm his entire body and turn it into a mass of writhing appendages that would seek nothing but stimulation, thankfully with treatment we've stunted the progression much like we're hoping to do with you.

Ax just nodded dumbly as he watched the horse continue to masturbate on his bed, the creature's face clenched in pleasure as his hands and the tentacles on them stimulated the oversized slab of horse cock. Reluctantly he was pulled away and continued on towards the back of the room, seeing another two tentacle creatures further along in the disease as well as a female that had a cock not only above her feminine slit but also one on each of her nipples that she stroked with a passion. The trend of afflicted continued until they finally passed by a lizardman with a cock-tail and reached one of two empty rooms that were next to each other.

"These will be your quarters for the duration of your treatment." Frysco said as he swiped a keycard through a reader on the wall and a section of the glass slid away. "I know it doesn't look too enticing but we try to keep our subjects as comfortable as possible in order to help them. All you have to do is fill out the requisite forms in order to allow us to begin and we'll make all the proper arrangements so that you can begin immediately. Don't worry, we'll take care of all the embarrassing phone calls and under section 46 of the newly passed Hawthorne act you can't lose your job for the duration of this study."

Ax nodded eagerly and sat down on the bed. "Thank you Frysco, I don't know what I would have done if you hadn't called." The wild dog admitted. "I'll sign anything you want, just reverse this disease and cure me. Also... I'm not sure if you can, but I was wondering if you could also help my friend as well?"

"Your friend?" Frysco cocked his head questionly as Ax fiddled with the plastic bag in his pocket. "If someone else has been infected besides yourself you should have told me bef- oh..." The gryphon stopped mid-sentence when he saw the bag that contained a feline-shaped, grey and black spotted dildo in Ax's hands. "I see, that must be your friend Carter... well we haven't tried anything with phallicitis that's run its course to completion, but that doesn't mean I'm not willing to try."

"Thank you again." Ax replied as he gave the bag to the scientist, fighting back the tears in his eyes. "Anything you can do will be appreciated, he wouldn't be like that if I hadn't let him down."

Frysco nodded and after about an hour of paperwork and the stripping of his clothes the avian male left and the door slid shut behind him, which made Ax alone once more as well as completely naked. Even though it was still relatively early in the night his entire body felt exhausted and he flopped down on the bed, which was surprisingly more comfortable then it looked. "Please God, let me be cured." Ax whispered to himself as he closed his eyes.

"I whispered that little prayer when I first came here too." Ax suddenly heard which caused his eyes to snap open, looking over to see a completely naked tigress braced against the wall that separated their cells. "Sorry to startle you, I just got back from my treatment and saw I had a new roomie. My name's Celene, what did you catch?"

"Oh hi." Ax replied, though even though his cock-tongue had once again became soft its girth made his words garbled which caused him to become flush with embarrassment. "As you can probably guess I'm in for phallicitis that I caught from trying to help my roommate who was also afflicted. Yourself?"

"No need to be ashamed in here hun." Celene stated, which only caused the wild dog to become more embarrassed. "Tough break though with the cock-tongue disorder, I've seen a couple people in here that were in the advanced stages and that ending mutation sucks. I'm here for vagitosis, otherwise fondly known as pussy-mouth, and I have a hook-up that was too stupid to realize he was infected to thank for this."

Ax tilted his head in question before he realized that the feline's maw had thicker lips then he was used to seeing. The tigress went even further and opened her mouth wide for him to see, Ax's eyes widening as he saw a completely toothless maw that was covered in soft-looking flesh. The only thing that even looked normal was her tongue, which she seemed to deliberately keep away from the sides of her mouth just like he did. After a little bit the wild dog was forced to look away, but unfortunately it was too late as both his cocks began to stiffen.

"Sorry to get you hot and bothered before your first treatment." Celene apologized once she closed her mouth. "I know arousal causes these things to progress so I'll just let you lie and get accustomed to your settings while I continue reading. We get dinner time in an hour though and the food here is actually very good, so try not to fall asleep. Also... don't lose hope, I've been here for a week and so far their methods have completely halted the progression of my disease, I'm sure they can do the same for you."

Ax nodded and thanked the tigress before he laid back down on the bed, his tongue-cock once more fully erect and aching to be touched. The gryphon had warned him about pleasuring himself before he received his first treatment sometime tonight, which meant all he could do was stare at the ceiling and focus other things. His thoughts were eventually drawn towards Carter, part of him wondered what would have happened if the research center had called them a day earlier, most likely he would still be living his normal life and the snow leopard would be laying there talking to the tigress instead. As his thoughts continued to progress he wondered what was happening to him right now...

*********************************

Frysco sat there on the examination table with the bag that he had received from their newest patient; the gryfsune could feel the dildo throb slightly through the plastic as he opened the bag and carefully rolled the contents onto the steel examination table. It was the first time he had seen the final stage of phallicitis that hadn't been monitored in their lab, and he was surprised to find that the disembodied cock had a kind of natural slickness to it that made him wish he had taken the time to wear gloves, as well as a warm feeling of the fleshy skin that covered it. It was something unlike what he had ever seen before and he was excited to continue its study, but after a few hours of measurements and sample collection his shift was over and he had to return the dildo to a freshly labeled drawer before he cleaned up.

The research facility had living quarters on-site that in the gryfsune's opinion were better than most of the apartments in the city, one of which he claimed as his own as he tossed his lab coat aside and began to sift through his messages. At first he thought he would make food but his fatigued body directed him otherwise, he flopped down on the bed as he went through the last of his mail. The only thing of importance was that their lead lab technician, a hippogriff by the name of Samson, had not come back yet from a field collection of samples of a possible new kind of STFD. It wasn't terribly uncommon for his supervisor to stay out later than his hypothesized time in order to collect samples, so it didn't concern him too much as he turned out the light and went to sleep...

...or at least tried to. Frysco sighed as he tossed and turned for the nth time, his bedsheets tangled around his body. Every time he closed his eyes the only thing he could see was that snow-leopard dildo from earlier, the girth and weight of it in his hands. His mind raced with the possibility of such an item in his possession, and every time he tried to shake the thought off it seemed to redouble its efforts. He tried several means to get himself to sleep, even trying to masturbate only to find that his soft cock would not harden under his usual ministrations which only doubled his frustrations.

Finally two hours later the gryfsune threw the covers off of him and began to put on his clothes like a man possessed. He didn't know why but he had to see that dildo again, and soon found himself in the lab once more with it in his hands. With the night shift being lightly staffed it was easy for him to circumvent detection, now he stood there completely entranced by the living dildo, his bare hands caressing it which caused a detectable shudder to go through its entire length. He didn't know why but he knew he had to take it, and even though a small part of his mind screamed at him that something was wrong he pocketed the large member and darted back through the lab, pausing only to delete the record that he had put in on the item earlier that thankfully hadn't been finalized yet. Once more he avoided most of his colleagues and found himself back in his apartment with the dildo once more in his hands.

"Now what." Frysco seemed to ask it as he carried it into his bedroom. After a few seconds of silent contemplation he seemed to know what he had to do, he had to have the strange thing inside him at all costs. It was something that the normally straight gryfsune wouldn't hadn't even contemplated before, yet he soon found himself bare-assed on his bed with his butt in the air and the head of the dildo against his puckered hole.

For a moment he hesitated as the gravity of the situation weighed down on him, but the compulsion to put the thing inside him quickly overrode his sensibilities and he let out a loud groan as he began to push the head of the dildo inside him. His beak opened wide in a silent groan as the naturally lubed appendage began to disappear inside his body, his free hand grasped the sheets as a strange new pleasure began to flood his system. He could almost imagine that it wasn't just some living object but a real snow leopard male behind him pushing into him, his own cock throbbing against his stomach.

When he felt the entire tip pass his tight anal ring he managed to crane his neck to look at a dresser mirror, the sight that greeted him completely foreign in his eyes. He saw the reflection of a needy, slutty-looking gryfsune pressed against his bed, his mouth still open in bliss as inch after inch of that spotted flesh disappeared past his butt cheeks. His body writhed on the bed as he continued to push it in until it was almost completely inside him, and when the tip bumped against his prostrate his hips bucked forward and rubbed the entire length of his member against his sheets.

The pleasure was more than enough to set Frysco into a whole new realm of lustful abandon; he immediately got up and walked with the dildo still inside him to the nearest chair and began to fuck himself in earnest on it. As he bounced up and down and pounded his prostrate he stroked his own cock, his climax quickly closing in. Finally he mashed his body down so hard it slipped almost completely into him and his body arched back into an explosive climax. He had to grip the chair as he came harder than he ever had before, thick ropes of seed splattered on his feathers and fur as his tensed up body finally released like a spring and he slumped down on the chair panting heavily.

It took Frysco a few seconds before the gravity of the situation dawned on him; not only had he taken something that used to be a person and shoved it into him but he had done so in a completely erratic manner that was unlike him. Before he could fret too much though a wave of contentment washed through his entire body and he felt sleep settle upon his body once more. He took a nearby towel and dried himself as best he could before he flopped naked on the bed, his eyes quickly closing into the sleep he had been formally denied with the leopard cock dildo still lodged firmly in his tailhole.

***********************

The following week was a blur for Ax as he began his treatment regime. He had seen more doctors during the relatively short duration then he had ever visited in his life before that, and by the end of it he felt more like a lab rat then a patient. He couldn't deny that it was working however, the entire week he had been there the diseased had progressed very little, and by the end of the week it seemed to have stopped completely. He knew that he should have been a dildo like Carter or at the very least a part of someone else's cock by now, which meant he was more than willing to allow them to continue to take samples of his body while he was there. He had also gotten to know Celene as well, even though the first few days were a bit hard the libido suppressants that were part of the treatment made it easier to talk to her without getting a mouth boner every few minutes.

By the following Monday Frysco had visited him again for a progress check, the gryfsune sat opposite of the naked wild dog as he wrote down things on his clipboard. "So it appears that you're settling in very well here." Frysco commented. "The treatment is going well, your body seems very responsive to our regime and we've even seen tiny signs of reversion. How is it going for you?"

"Great!" Ax replied happily. "I thought that I would be like Carter by now but I'm still mostly me, which is awesome. I can only hope that after you fix me you'll be able to do the same for Carter." Frysco seemed to shift uncomfortably at that, which caused the canine to cock his head. "Is something wrong? Did something happen to him?"

"Oh no... no, nothing like that." Frysco replied, trying to hide his nervousness. There was no way he could tell him that for the last week he had been stuffing his friend up his tailhole before bed as the only means for him to sleep. Over the last week he had been growing more and more attached to the strange appendage to the point where even now he felt empty without it inside him. "I've been working with your friend extensively and hope to get some meaningful results, though trying to cure a terminal stage case of phallicitis is likely going to take years before we make any significant progress."

The wild dog nodded in understanding and the gryfsune quickly changed the subject. "Well then, I was hoping that I could authorize a request for a new type of test, one done with your neighbor Celene. It's going to be very invasive, but we've found differing genetic markers in your diseases that we believe might be indicative of cross-infectious competition. Basically if you two introduce your afflictions to each other they might kill each other off in a bid to try and claim your maws. If you consent we'll give you both neutralizers to the libido-suppressants and allow you to copulate."

Ax was taken aback by the offer; while he certainly thought the tigress was sexy they had become friends in their short duration together. On the other hand it was a possibility that they could become cured immediately, something that both of them desperately wanted. After a few minutes of thought he found himself signing the forms of consent and then being escorted to an observation room. Inside Celene was already there with two technicians each holding a syringe filled with a green fluid.

As Ax sat down they briefly made eye contact and laughed nervously before they looked away while the needle was pushed into their arms. Once the technicians were done they left the two alone, though they both knew that wasn't the case by the cameras and mirrored glass was in the room. "So, looks like we're going to try and get out of this the same way we got into it." Ax said with a nervous grin. "You alright with this?"

"I am if you are." Celene replied with an equally nervous giggle. "Since we're both here it appears that is the case. I'd say we start with a kiss but that's sort of third base in our case."

Ax let out a genuine laugh and the tigress followed suit, but after a few seconds the sound tapered off and the two stared at each other. The libido-suppressants were almost completely neutralized and the lust that they had been staving off returned in full force. The two infected individuals pounced on each other almost at the same time and kissed each other fiercely, Ax's tongue engorged almost instantly and pushed into Celene's mouth which clamped down around the invading appendage. To the both of them it felt like they were actually having sex but with their mouths, their muzzles opening to allow the canine's cock-tongue to go deeper and deeper into the feline's pussy mouth.

After a few minutes of face-fucking each other it was no longer enough, their pent up sexual desires weren't merely satisfied with their oral coupling and the tigress flipped the wild dog over onto his back before she climbed on top. Their lips continued to press together as Ax darted his tongue in and out of Celene's mouth in a mock-thrusting gesture while at the same time the female lined her real slit up with his erect cock and began to slide down on it. The effect of their strange double penetration was shocking and immediate, the tigress's knees went weak as they both let out a muffled groan around their oral genitalia and it caused her to slide down even more on the dog's pole.

Ax's eyes nearly rolled back into his head as the two bodies were no longer rational creatures, just two sexual animals that could have sex on both ends as his hip thrusts matched the movements of his tongue to put them in sync. He could feel the tigress' body tremble above him as they both felt their pent-up orgasms finally come close to completion. As Ax felt the familiar rush of his impending climax he wrapped his arms around Celene and pulled her in, the surprised tigress' eyes widening as she was completely impaled in both pussies as he came hard. Celene was not far behind him, her breasts rubbing against his chest as their writhing bodies were joined together in a strange loop of pure pleasure.

When the two were finally able to have coherent thoughts Celene slowly pulled both her mouth and groin away from the wild dog's cocks, which had already begun to soften. A dribble of cum ran down her chin and thighs as their satiated lusts allowed them rational reasoning. Once they had their sensitive flesh away from each other they quickly decoupled and looked away, both of them too embarrassed to say anything as the technicians once more came in, this time with empty syringes. As they filled the plastic tubes with their blood Ax began to wonder if they had done the right thing. Even though they were both desperate to cure themselves it still felt wrong that they had jumped at the idea of having sex with each other in order to try and hurry something that was already being taken care of.

"You two alright down there?" The two heard Frysco's voice said. "Tell me what you feel right now."

"I'm alright, I-" Ax suddenly stopped when he heard himself speak, his words not nearly as garbled as they used to be. "Oh my god, I can talk normally!" He shouted as he ran towards one of the mirrors. As soon as he saw his reflection he opened his mouth he saw that his tongue had diminished considerably, though it was still in the shape of a cock it wasn't nearly intrusive.

When Ax turned around he saw that Celene was performing a similar examination, and from the look he saw on her face she had gotten equal results. "Ax, I don't believe it!" She exclaimed as they ran forward and hugged each other. "Thank you..."

"Hey, don't thank me, I just did what all males are best at." Ax replied sheepishly. "I'm glad that it helped Celene, perhaps we're on the road to... the road to uh... huh..." Ax stopped once more as he felt something strange that didn't have to do with his tongue. It felt like his jaw had gone numb and when he pushed against his teeth they felt a bit loose. Experimentally he reached in with his hand and wiggled his fang, only to let out a gasp when it popped off easily in between his fingers. "Oh no..."

Almost as if Ax's body realized that he knew he could feel his entire mouth grow more sensitive and the flesh thicken considerably. His cock-tongue almost instantly began to harden again as it rubbed against the walls of his maw and caused electric tingles to shoot through his body. By the time the technicians had run in with a familiar blue liquid of their usual treatment all of Ax's teeth had fallen out and his lips had grown thick and rubbery while Celene's tongue began to poke past her already altered lips and form a small slit at the end.

"Well it appears our theory was only half-correct." Frysco said with a sigh as he watched from the viewing booth at the two test subjects left, Celene on the verge of tears while she was escorted out. "I really thought that it was going to work, I didn't even factor in the possibility that their physiology would be altered even with the competition vectors. This is all my fault..."

"Don't blame yourself, I don't even think Dr. Samson would have foreseen that outcome." The dragon replied as he wrote the results into the computer. "Speaking of such, is he still out in the field? It's been a week without him checking in, I'm getting rather worried about him."

Frysco clicked his claw against his beak as he silently shared his partner's sentiment. Even though his thoughts had been mostly preoccupied with his nightly encounters with 'Carter' his concern for his mentor had only grown the more he was absent. The research center had assured him that everything was fine and they had reached out to the hippogriff, but he knew that it was a possibility that they were lying to him to prevent him from doing the thing he was about to do. "Walt, can you finish this up please, I have to go do something."

"Sure Frysco." Walt replied and turned back to the screen. The gryfsune wasted no time and went back to his apartment where his bag was already packed and ready. He grabbed it and took the scenic route towards the back of the building, hoping no one saw him as he planned his unscheduled exit. When he got to the door that separated him from the outside he felt a twinge of regret in his stomach, his thoughts turning to the dildo he had decided to leave behind in his bedroom.

"Sorry, but I'll be back soon." He whispered to himself as he put his hand over his stomach, almost hoping that the former snow leopard could sense his thoughts as he pushed open the door into the bright sunlight of the outside world and walked through.