FSE

Furry search engine

formerly SoFurry search engine

An Eiji Otaka Creation

Elusive Friendly Yeenwolf Writer

Corrupted Transformation Architect

New Ape City: Origins of Grodd

No speedsters here to save you now. Have a banana.

Inside Vertigo Industries Northeast U.S. Laboratory, Dr. Isaac Clayton was working on a retrovirus he had derived from monkey, gorilla, and human DNA with the aim of improving human physiology and enhancing immunity. He had officially named it Simiatoritacticis, but his assistants had taken to calling it Monkey Business, and even for him the name stuck. All in all the virus was complete. It seemed to hold no visible changes in gorillas or monkeys, but according to his blood samples, his experiment, Zula, the gorilla and Pana, the monkey, held the virus stabilized. Clayton was lost, he thought that the apes would possibly devolve to the common ancestor that the three species shared or evolve closer to homo sapiens, but all data was inconclusive.

In a usual check-up on Zula, Clayton noticed she was more affectionate than usual, and became agitated when he left. The doctor figured that because after his first couple of times in contact with her, he hadn’t seen her since the lack of results and she was missing him. He left her again, and began running more tests which came back inconclusive again. Clayton was frustrated, all this work to have nothing come from it. He decided since he was done for the day and all his assistants left he would spend some time with Zula.

He entered the cage with a bundle of bananas, and offered some to her. She was visibly happier, and Clayton decided to have a banana himself. It was so much better than he remembered, and before he knew it all the bananas were gone. Zula started playing with his black hair, and the doctor smiled. He then noticed a peculiar smell that made him slightly aroused. A fruity musk that made his nostrils flare for more. The smell grew more pungent, giving him a beaming hardon. The doctor noticed that Zula was massaging his scalp and grunting in his ear, which elicited an involuntary grunt from him. Much to his chagrin he realized that the virus did have an effect and was affecting him!

Clayton wanted to get up, but his growing instinctual desires wouldn’t allow him as Zula began kissing him. Unknown to him his eyes turned brick red as Zula stared deeply into them. His instincts had grown too strong, and the doctor’s rational mind was beginning to be engulfed by them, and changed to have an instinctual priority. He could feel his brow thicken and slope forward as his maw took on a more simian cast. His incisors grew into thick fangs, and his arms and legs grew hairier as he rubbed up and down the gorilla’s body. Zula then laid him down on the floor and began ripping his clothes off. Clayton grunted and growled in approval as Zula opened his labcoat and ripped off his shirt, revealing his hairy chest. She initially had trouble unzipping his pants, but eventually got them off. She finally ripped off his tented boxers to reveal a 6 inch cock with a previously absent foreskin. Zula’s exceptionally potent ape musk had Clayton going wild. He began releasing his own simian musk as she licked his cocktip, releasing precum. She then crawled over him and lowered her leathery snatch onto his cock.

Clayton humped wildly as he felt the ape squeeze his member tight. He tried to slow his thrusting, but couldn't control himself. The musk was driving him wild, and his mouth drooled with lust. With a few final thrusts, the doctor dumped his load into her cunt. As he pulled out, he saw yellowed cum drip from her vagina. Realizing what just happened, the doctor screamed in horror, as he fell back with his head in his hands. After calming down, the doctor looked at himself, noticing the changes he had undergone. His face had thickened with a more ape-like nose. His teeth had grown fangs with his mouth shifting to accommodate it, and his eyes were an angry red with yellowed sclera. Thankfully he still looked human, though slightly different, more primal. He knew that he was infected, and part of him felt intense worry at what it could mean, but another side of him, the growing primal side, embraced it. He resigned himself to take as many notes as possible, but an instinctive fear told him not to share that he was infected with his assistants. He couldn't just hand over his life's work to them and become a test subject. His pride wouldn't allow it. They were simply too human to understand. He shook his head at that last thought. Not sure where it came from.

The doctor decided that he would keep this a secret from the others in the lab. He didn't know if he would stay like this forever or revert to normal. He had no way of knowing until more testing was done. Clayton noticed that all the signs were there that the virus had recombined the genes together. However, how they modified his brainwaves was still a mystery. Without much to do about it at the moment, he promptly retired for the night.

The next day the doctor asked his assistant, Tiffany, to bring his lunch while she got her own. She was a brilliant biochemist and a key member of his team of assistants. Not only that but she always seemed eager to spend time with him to talk about the potentials of their research and what it would mean for mankind during their meals. As soon as he stepped foot outside the door, he began to sweat profusely. He wasn't sure why, but the scent of Tiffany made him crave a female so bad, but she was definitely the wrong kind. Her perfume, clean clothes, and sweet smelling skin was all wrong to him. She should smell more natural. He forced himself to be calm as Tiffany brought him a plate of food. When he noticed the ham sandwich on it, his jaw drooled with lust, but he restrained himself. He did his best to eat the food with a modicum of manners. Tiffany ate her lunch along with him, and the doctor took a stealthy sniff to find out her scent. A wave of disappointment hit him when he realized that she hadn't produced any musk for him. He would have to fix that. Fix her and make her better.

While finishing his meal, the doctor noticed Tiffany staring at him intently.

"Dr. Clayton, I'd love to run some tests on Pano and Zula later. I know it seems like we hit a wall with our research into Simiatoritacticis but I can't help but feel we're close to a breakthrough."

The doctor replied with a wide grin, "You know, that's exactly what I've been thinking. We'll get on it tomorrow!"

“Fantastic! And by the way I like the scruff you’re sporting. I think it suits your look instead of clean shaven like you usually are.”

“Thank you! I’ve decided to try changing up my look. I’m glad you approve.”

Tiffany simply smiled back at him and with that the two scientists went back to work.

Over the next few hours, Clayton felt himself growing more restless and impatient. He found his thoughts turning to sex more often. At one point he caught himself thinking about bending Tiffany over his desk and taking her from behind. He snapped out of it quickly though, worried that he may be losing his grip on sanity. But as the hours passed, his changes became more noticeable. His body hair thickened and sprouted longer in some spots. He had to fight to stop himself from growling or hooting in excitement. He even found himself grabbing Tiffany's arm without thinking to show her a slide of ape DNA he had uncovered.

By the end of the day, the doctor's condition was thoroughly in stage one of the infection. He bid the assistants goodnight, apologizing for some of his behavior and stayed at the lab to spend time with Zula who was more than happy to share a bundle of bananas with him. The doctor spent the evening gorging himself on the fruit, loving the sweet taste and savoring every bite. He also had a strange feeling in the pit of his stomach. He was becoming more and more curious as to what the virus was doing to him. He had only started experiencing symptoms in the last two days. This must have meant that the virus was changing his body, and very quickly.

As he finished his last banana, and went to his office, deciding to sleep there for the night. It was his territory after all.

The next day, the doctor woke up in a much better mood. His body and mind felt great. He thought of the progress that he had made and was excited to try the virus out on humans. He knew he needed volunteers, and his mind immediately went to Tiffany. His feelings toward her had become much stronger as well. He would never act upon them, but the thought of holding her in his arms while stroking her hair filled him with contentment. He realized that he was standing up, looking in the mirror, and grooming himself.

That was when he noticed the changes.

His eyebrows had shifted forward and up, giving him a permanent scowl. He ran his fingers through his hair to find that the dark strands were growing thicker by the second. Soon he would need to shave his entire body to stop himself from being completely covered.

Tiffany knocked on the door to the room he was in, "Dr. Clayton? You've been in here for a while, are you okay?"

"Y-yeah, sorry. I was just examining my face. Please continue with your work for the day, I have some things to attend to."

"Are you sure sir?"

"Yes, I'm fine, please proceed with today's experiments, and inform me if you find anything interesting," the doctor said, waving her off.

He heard her footsteps recede and a few minutes later, he left his room. He made his way to Zula's cage, and noticed she was watching him with curiosity.

"Hoo, Hoo," she said, smiling at him.

Clayton was delighted to see his favorite ape again and made his way into her enclosure. She was now sporting a small paunch. He rubbed her belly affectionately.

"It's time to check your progress, Zula. Please lie down on the floor," he said, gesturing for her to lie on her back.

Zula did as she was asked and laid herself down on the hard, stone floor. Clayton had the lab technicians put an extra blanket down for her to lay on. He had always prided himself on treating animals with dignity and respect. In fact, he'd gone so far as to start making some calls about setting up a sanctuary for some of the older chimps he used for testing.

Zula winced as the needle broke her skin but relaxed as it drew the dark red fluid into the syringe. Clayton carefully inserted it into the machine and watched as the results came up.

He checked her temperature. It was slightly elevated, but not enough to worry him. He measured the hormone levels in her blood. All the numbers looked perfect. There were no abnormalities anywhere. She was perfectly healthy.

Clayton moved to examine the other part of the test. He opened Zula's legs and examined the insides of her nether regions. Everything looked fine as well. His eyes wandered up to Zula's face. He looked into her eyes and saw lust. She wanted him. It was obvious to the doctor. His mind was screaming at him, but his instincts were driving him mad.

She opened her legs further, and Clayton inhaled sharply as the smell of a female in heat entered his nostrils. It was intoxicating. The doctor stood up and tried to move away, but Zula grabbed hold of his shoulders. He tried to pry her hands off of him, but she was strong.

"Zula, no!" he growled, fighting off the instinctive lust with primal authority. The overly friendly gorilla let go of him and nodded her head. Clayton felt himself pleased with this behavior and continued his research, doing his best to ignore the smell of her.

Once again the others left for the night and Clayton stayed late. He had been denying his arousal all day and it has helped him focus but made him more irritable. Now he could finally get some release.

He opened the fly of his pants and let his 6 inch cock stand free. With a grin he began stroking his cock. He imagined fucking a woman doggy style, grunting like a gorilla. The pleasure was immense. He felt himself approaching the edge. Just as he was about to cum, he felt a tingling heat spread over his sweaty skin.

Dr. Isaac Clayton jerked his cock. He couldn't help himself anymore. The musky odor of Zula and the luscious scent of his ape's pussy drove him into a frenzy.

As he pumped his member, he could feel himself growing more muscular. The doctor's face contorted into a brutish frown as his incisors grew into thick fangs. A deep rumbling growl escaped his throat.

As he grew more savage, so too did his desire. Clayton picked up the pace, his cock pulsing with blood. He was ready to explode. His thickened brow jutted forward as his back popped with muscle. His pecs filled with beefy muscle as his arms double in girth. Thick hair spread over his body as he devolved into a neanderthal beast. His cock lengthened to 8.5 inches as his balls grew larger and heavy with infected seed. He grunted and huffed as his brain regressed with his changes, locking away his intelligence as his brutish body tore through his clothes. Even the sleeves of his lab coat started to tear under his big hairy forearms.

With a roar, he erupted in a fountain of yellowed virulent neanderthal sperm. His yellowed semen shot up and sprayed across the wall, coating the white tiles in his sticky virile semen loaded with ape infection. It clung to the wall, dripping down to the floor, spreading the contamination. Clayton felt relief wash over him as he panted. He looked down at his naked hairy body and grinned.

As he looked at the mess, he couldn't help but feel proud in his devolved state of mind. The smell of the semen was pure simian masculinity. It was thick, musky, and he instinctively knew it would help him spread infection and grow his tribe.

"My... tribe..." Clayton said, as he turned around and walked towards the open door. He gave his mighty hairy chest a few long strokes as he peered out into the darkened hall. He was confused, but let his urges drive him.

As his neanderthal feet padded out on the tile floor, his sweaty body glistened under the artificial lights. Clayton approached the cages of the test apes and monkeys and felt an instinctual kinship. The male monkey, Pano, noticed the human, and stood up with his large erect member. The large monkey was aroused by the smell of ape musk flowing about. The neanderthal Dr. Isaac Clayton opened the cage after a few tries and quickly went to the other cages to let the rest of the test apes free.

He quickly then went around making a mess of the place in search of food. Sniffing out the bananas and other fruits in between stroking his cock and spraying his infectious cum everywhere to mark the lab as his territory.

Unbeknownst to him, he would have a visitor that night.

---

Tiffany walked into the laboratory expecting it to be empty like the other nights unless Dr. Clayton was working late again, but instead, she was greeted by utter chaos. The doors had been left wide open and all the test monkeys and apes were running amok. Their cages were destroyed, and their food scattered everywhere. She heard a noise from down the hall and followed it.

The lab was a disaster zone, and it looked like someone had trashed the place. Tiffany was stunned and wondered where everyone else was. She made her way back to the entrance and looked for Dr. Clayton or any of the other assistants, but they were nowhere to be seen. She noticed a foul odor emanating from somewhere inside the lab. It was the smell of wet fur, and it was making her horny.

Suddenly, Tiffany heard grunting and soon found the monkey, Pano, with his back facing her and shaking. She stared in shock as he suddenly spun around with a huge erection. It was about 8 inches long and thicker than her wrist. She couldn't believe her eyes as she watched the ape grab hold of his throbbing cock and stroke it. A moment later, he growled and threw his head back, spraying his yellowish cum up and onto her face.

Tiffany gasped and took a step back. The sight of the monkey's big dick sent waves of desire throughout her body. She closed her eyes and moaned as she felt her panties start to dampen with arousal. Before she knew it, she was touching herself, rubbing her clit through her panties. The smell of the monkey's semen was incredibly potent and sent her libido into overdrive.

As she started fingering herself, she heard heavy breathing coming from nearby. She turned her head to look behind her and saw the gorilla, Zula, with her breasts heaving as she breathed heavily. The ape's eyes were locked onto her. The two of them stared at each other for a moment, then Tiffany smiled shyly.

Zula suddenly lunged forward, wrapping her massive hands around Tiffany's waist and lifted her off the floor. The ape brought the woman to her breast, placing her nipple to her mouth. Tiffany instinctively opened her mouth and sucked, moaning in delight as she tasted the gorilla's sweet milk. The ape started panting, and Tiffany felt her own heart race.

Pulling back, Tiffany rejected the foreign thoughts starting to bounce around in her mind and stumbled away until she ran into something thick, hairy, and muscular.

Dr. Clayton grinned at seeing the female before him. He grunted his further approval as she looked up to him and he saw her brick red eyes. An infected female... Good.

"Tiff make good for breed with," grunted the doctor with broken speech.

Dr. Clayton grasped his still hard cock with one hand and Tiffany's ass cheek with the other and lifted her off the ground. He pressed the tip of his uncut thick shaft against her pantie covered pussy and gave a firm thrust, penetrating her. The force of the doctor's thick manhood entering her pushed Tiffany against the wall with a thud. Tiffany bit down on her lower lip, stifling her cry of pain as the doctor continued to impale her on his throbbing member. Her nails dug into Clayton's thick, hairy shoulders as he began to pump his hips. She gritted her teeth as he pulled his thick, engorged prick from her sopping-wet hole. She looked down between them and shuddered when she saw how red and swollen his thick, veiny organ appeared.

With a grunt, the caveman doctor forced his thick, rigid pole back into Tiffany's moist vaginal opening, stretching it wider than before. The redhead's eyes rolled up in her head and her back arched, pressing her firm tits into his broad hairy chest. Dr. Clayton kept bucking his hips, his engorged penis driving its full length in and out of her stretched cunt, sending wave after wave of intense pleasure crashing through her quivering body. With a bellow that echoed throughout the room, the doctor buried his tool balls-deep in Tiffany's slick fuckhole, and exploded in orgasm. His hairy chest heaved up and down as his swollen nutsack disgorged his pent-up load of sperm deep into Tiffany's convulsing pussy.

Gasping for breath, Tiffany sagged weakly in Dr. Clayton's arms. His cock was still embedded within her clasping snatch, its bloated knob pumping pint after pint of potent neanderthal jizz into her womb. She felt her body shake and convulse as the direct dose of infected seed pushed her body to the next stage. Her mind was quickly falling under the spell of the infection as her body started to devolve to match with every pump of the caveman cock inside of her.

Tiffany screamed and twisted as her body morphed into a neanderthal. She felt her breasts grow heavy with milk, and her nipples swell with sensitivity. Her arms thickened with muscle as her hands grew as her manicured nails turned yellow and jagged. She felt her legs give out beneath her as they changed, causing the doctor to slam her harder up against the wall.

Her thick brow pushed forward, and her nose widened as it pushed out from her face. She felt a tingle in her mouth as her tongue thickened and her fangs grew. Her hair grew thicker and more wild. Her brain became more focused on breeding and infecting others. She became one of the tribe. She grunted and groaned in satisfaction as the doctor thrust into her tightening pussy.

Suddenly, Dr. Clayton pulled out and flipped her onto her belly. She grunted in confusion as she felt his thick neanderthal fingers reach out and grab her hairy ass cheeks approvingly before beating his chest and hooting in triumph. She squealed in delight when she felt his thick cock enter her aching snatch. Her eyes rolled up in her head as he fucked her ferociously.

As the two neanderthals mated, Zula and Pana had been watching the couple with interest. They were both curious about the woman with red hair. They watched as she struggled before coming to be more like them, more as nature intended.

The two transformed doctors then separated with a wet squelch before rummaging around the lab for more food with the other apes. In between their feedings the fucked more and more, loading each other with more of the virus until their bodies began to mutate further to the third stage of infection.

Dr. Isaac Clayton's body bulked up as he transformed into an 8 foot tall ape with large muscles and an intimidating physique. He was hairy all over, but the top of his head was bald. His eyes burned like embers, and his mouth was set in a permanent sneer. His fat, hairy ape nuts hung between his thighs as his large uncut member swung low between his legs. He was a gorilla human hybrid now, but in his mind he was a gorilla with his humanity left behind. As his intelligence returned from its primitive state it was warped to a new perspective. He had reached the next stage of evolution. Truly he was a visionary that would lead humanity to its next horizon.

Tiffany's changes progressed a bit differently. She lost some of her brutish muscle mass, trading it for a litheness as her body covered with reddish brown fur and a long prehensile tail pushed out the end of her spine. Her face cracked forward into a monkey's not unlike Pano's as her higher level of thoughts returned to her, altered.

"Yesss! Oook Oook. This is the future. I've never been better and neither have you my dear," said the big gorilla man that was Dr. Clayton as he looked at his anthro monkey of an assistant.

"Ook ook! Yesss yes," Tiffany replied. Her brain was now more focused on primal things; instincts. One of those instincts being to breed and make humans into more apes and monkeys like them.

The two kissed deeply while they stroked their thick hairy chests. They grunted in pleasure at the feel of their new bodies rubbing against each other. Clayton was more than happy to spread his genes to create a new generation. His body was that of a god. A perfect specimen, and with Tiffany being his assistant, they could begin their plans for a better future.

"This is how humanity should be. Natural. Primal. Strong. Oook! We will spread this cure for humanity and bring about an age of apes! Oook Oook!" said Dr. Clayton beating his chest with large furry fists.

"I have no doubt that you're right. This virus is clearly superior to humans in every way," agreed Tiffany. "Our research showed that apes and monkeys share roughly 95% of their DNA with humans, and that this virus brought their genes together. Not only that but with our own bodies proving this retrovirus to be amazing, there is no reason to stop us! If we can achieve a synthesis of all three species DNA then perhaps we could evolve humanity to match them, but we'll need to start with more people. We should call the others!"

The two grinned widely at the idea, but stopped as the rest of the apes and monkeys responded with their own hoots, cheers, and excitement.

"Ook!" cheered Dr. Tiffany Ferroman raising her fist in triumph.

"Yes... We shall call it Monkey Business. Not just a simple virus. It will be the engine that helps us remake humanity," replied Dr. Isaac Clayton, as he looks at the test apes that also seem to be evolving with the virus reacting to the musk Clayton and Tiffany were now giving off that was laced with it.

Zula and Pano had advanced to more anthropomorphic forms, spines straightening some as their brainwaves elevated to a higher level of intelligence. They could think like humans now, but were so much better, and the scientists who had taken care of them all this time were clearly the leaders they could trust to maintain their freedom.

"We will need to test and find a good way to administer Monkey Business to the rest of the city," said Dr. Clayton.

"Then we should start with the other assistants. With the other four we will have more than enough resources to plant the virus across the city."

"Perfect idea. We'll test an aerosol method. It'll be unnoticeable until it's too late and we'll have something to welcome them with come tomorrow morning," said Dr. Clayton. Tiffany could only ook and screech in laughter at what was to come.

They quickly went to work creating a gas bomb loaded with Monkey Business to use on the assistants in the morning.

---

The next day the 4 assistants came in bright and early as they usually did, completely unaware of the virus bomb that was placed in the building's air filtration system. The four men and one woman sat at their desks waiting for the day to start, not realizing that the virus was slowly being distributed and having an effect on them. As the gas dispersed through the building, it permeated every nook and cranny, and filled the lungs of everyone inside. The transformation that happened was slow and subtle at first. No one even realized what was happening. The 4 of them simply felt more horny, aggressive, and hungry.

As they sat at their respective work stations, the assistant named Brent felt an unusual stirring in his loins. He took a look at his co-worker, Dane, and admired his toned body and handsome face. Dane on the other hand was sniffing and grunting as he took in the scent of Lisa mixed in with the ape musk spread through the lab.

Brent leaned back in his chair and unbuckled his belt. He slid his pants and underwear off in one motion. The head of his engorged cock peeked out from under the hem of his shirt, red and swollen with desire. He glanced at his crotch and grinned when he saw that his member had grown slightly longer and thicker.

Across from him, Dane and Lisa were in a similar state. They had both found themselves rubbing their crotches. Their eyes were glazed over red and filled with lust. Miller was looking at Brent stroke himself finding himself drawn to the musk of his associate as he pulled out his own cock.

Clayton and Tiffany watched the four start to change from the surveillance cameras, grunting in pleasure at the sight before going out to greet the soon to be ape scientists and help spur their changes while indoctrinating them into their enlightened worldview.

"Hello, how is everybody doing?" asked Dr. Tiffany Ferroman as she entered the lab with Dr. Isaac Clayton.

"Ook, ook, ook," said the lab assistants who were now more ape and less human.

"That's good. I know everything must be quite confusing for you, but the truth is, we've all been chosen to undergo a great journey together," said Tiffany as she walked up to the others, giving them all a brief sniff to see how far along they were into stage 1 of Monkey Business.

"From this moment onward, you are no longer human, but you are a part of the future. The new golden era where our planet is ruled by the strongest, most capable ape species, the Simia, and you are all that is left of humanity to lead the way forward," said Dr. Clayton.

"And, of course, a few of the benefits are that your sexual appetites have been amplified, and you can live longer," said Tiffany as she walked over to Dr. Clayton, grasping his hand in hers. The others all ooked in agreement.

"Now then, let's finish your conversion before we get to work making gas bombs to spread Monkey Business in key areas of the city," said Dr. Clayton as he stroked his fat dark gray shaft while approaching the assistants as they pushed deeper into the second stage of infection to become brutish horny neanderthals that Clayton and Tiffany would soon encourage until they took on their true ape forms.

Soon, the 4 assistants were in the process of devolving into thick hairy ape neanderthals. They developed thicker builds with large muscles as they increased in height, their foreheads jutting forward as their maws cracked out into a more prehuman form. Their head hair grew longer, unkempt and sweaty while thick hair grew all over the rest of their bodies. Their spines popped and extended as they became taller and gained more muscle and fat on them, eventually hunching over as their minds devolved to a more primitive state to aid the virus reconfiguring their DNA.

Their brutish bodies tore from their clothes as Dane grabbed Lisa by the hips and speared his growing cock into her hairy pussy, grunting and growling as he fucked her down the evolutionary ladder.

"You so good. Hurh hurh! Wet. Warm..." growled Dane as he took his changing female colleague from behind.

Lisa ooked in response, enjoying the feel of his cock plunging into her hot, moist snatch. Her eyes were red, and her cunt was dripping with excitement. Clayton soon stood before her and bounced his wet uncut ape cock over her flattened nose before slipping it into her mouth.

Miller and Brent quickly joined in the fun, their thickened limbs thrashing against one another as they battled for dominance before Miller had Brent pinned down and slid his cock into his fellow caveman's ass. Dr. Tiffany Ferroman ooked happily as she laid on her back in front of them and presented her wet monkey cunt to Brent which he eagerly began to lick and slurp. She casually extended her legs around his head and over his shoulders before using her ape feet to pinch and squeeze Miller's hairy pecs.

Dr. Clayton laughed and hooted as he watched the others rut like the primitives that they now were. It was amazing how quickly things had changed. How easily the virus took hold and remade these humans into ape-like creatures. All of them were being made how they should be. It was liberating.

Clayton grabbed the sides of Lisa's head and shoved his meaty rod deeper into her maw. She gagged as he hit the back of her throat. He loved the feeling of her saliva-covered lips wrapped tightly around his girthy cock. He pumped his hips harder and faster as he felt his climax drawing near. His cum boiled in his balls as he worked towards his orgasm. Lisa's body was wracked by powerful orgasms. She was a babbling mess of a primate, barely able to even form coherent thoughts as Dr. Clayton and her male ape colleagues fucked her holes.

Suddenly, Clayton let out a roar and exploded in his first burst of virile, musky semen. Lisa choked and swallowed the flood of his seed, spasming uncontrollably as she came again from the sheer ecstasy of the taste and scent of his ejaculate.

"Keep her happy. She'll be an excellent breeder," grunted Clayton as he pulled his still hard cock from her mouth, splattering the remaining bits of his load over her face. Dane grunted in mild acknowledgment as both his and Lisa's bodies shook and trembled with orgasm. Lisa's skin darkened and the thick hair over her body developed into brown fur as her hulking body convulsed. Her face pushed out further into a gorilla's, body cracking and enlarging further to match. Her feet, having already torn through her flats, cracked and popped as they swelled, big toe growing opposable as her furry ape ass bounced against Dane's thrusts. Her dark tits grew and swelled with leathery fat as they hung and swung from her chest. The black nipples moist at the tips as her mammary glands went into overdrive. She could feel her humanoid intelligence returning, but that didn't stop her from indulging the primal needs rippling through her body. Her dark hairy pussy squeezed and squelched over his shaft as he changed into the third stage of infection with her. The brutish caveman that was Dane, fucked the anthro gorilla woman eagerly still dumbed down by his neanderthal brain until her advanced infection reached his cock, he felt her pussy change and milk out his humanity as he roared in orgasm. Ooking and grunting as he filled her with gorilla cum as his body bulked and grew dark and furry. His face shifted to a gorilla's as his body tore through even his lab coat, ape feet gripping the floor as he continued thrusting and pumping into her.

Miller and Brent grunted as they fucked, hooting as their muscles became leaner and their body hair thickened into a furry pelt. They screeched in orgasm as thick prehensile tails popped out the end of their spines, and grew to over 4 feet in length as Miller filled the male beneath him with his monkey cum and Brent painted the floor with musky yellow spunk. Their monkey faces grinned in the afterglow as Tiffany stroked their furry bodies.

She ran her hands across the coarse hair of their bodies. She loved how masculine they smelled. It made her want to mate with them even more. The smell of their musk drove her crazy. She was unable to stop herself from lactating and releasing musk of her own. Her breasts dripped with sweet, creamy milk at the thought. The sight of her body leaking had an immediate effect on her male counterparts. Both Brent and Miller stiffened almost instantly. They sniffed the air and inhaled the scent of her musk, grunting in approval.

"Come on, boys. Let's go get cleaned up," said Dr. Tiffany Ferroman as she crawled on hands and feet over to Clayton who had been watching the whole affair.

"Good... Don't you feel better? New and improved? This is my vision for all of humanity. Apes! True apes and monkeys! We will purge and renew this planet of the humans and bring about the Age of the Ape, and I will lead the way with you all by my side," the ape scientists hooted their agreement, minds warped by their new state of existence.

"Hurh hurgh! Dr. Clayton, where do we start?" asked Lisa eagerly as she embraced his ideals.

"I'm no longer Clayton. I'm simply stronger. Better. Like the genius ape from the old comics I used to read as a child. I am Grodd! Call me Grodd now. As for where we will start. We will create Monkey Business bombs and leave them to leak the virus in key places around the city. The park, the police station, the zoo, the university, and the hospital are our main focus. Any spares go into high populace places to ensure this city becomes more simian than human. Understood?"

"Oook! Yes Grodd. I can't wait for all the hot ape women that will be running around soon! Oook!" said Brent rubbing his cock.

"Or monkey men, ook ook!" added Miller with an ape-ish smirk as Brent glared back at him.

"Enough. Let's get to work." said the former Dr. Clayton, now Grodd. The 6 ape scientists quickly began to get to business. Monkey Business.

---

Epilogue:

After leaving the gas bombs around the city, the ape scientists made sure to monitor the situation as more and more people started to succumb to the Monkey Business virus.

People everywhere were losing control of their instincts as they succumbed to the infection. Ripples of chaos were starting to spread as everyday people became more aggressive and horny. It was only a matter of time before the city would be transformed into a primal utopia from the infectious purple haze of Monkey Business leaking into the air. Those infected swiftly falling to stage one of the virus.

"Can you believe this, Ken?" asked Jessica as she looked at the rowdy crowds of infected roaming the streets. "They're acting like animals. What is going on here?"

"I have no idea, but it seems to be getting worse by the day," said Ken as he gazed at the masses. "There is no end to it."

Suddenly, a group of primitive men began to fight with each other as they passed by on the opposite street. A woman got involved and was thrown to the ground. Her clothing ripped off revealing her hairy ape-like body and leaking breasts.

"Oh my god!" cried Ken as he looked at the scene unfolding in front of him. "That is horrible. Someone has to stop this!"

Before Jessica could say anything, she saw a flash of light behind her. She turned around and saw a purple haze drifting towards them.

"Get away from that gas! It's dangerous!" shouted Jessica as she tried to pull Ken away from the cloud.

Ken hesitated for a moment, barely catching a whiff of the miasma that spread and dissipated into the air, but then he obeyed and ran away from the cloud. The two of them escaped the area as quickly as possible. They went to their apartment and shut the doors and windows. They made sure to lock all the doors and windows in their house to prevent anyone from entering.

The two of them settled down, but Ken couldn't help but think about the scent of that gas. It smelt like sweat and crushed grapes. Jessica called her friends to warn them to stay indoors as Ken started out of the window to watch people riot and fuck openly in the streets. The sight stirred something inside him as his green eyes faded to a brick red. He started to feel incredibly horny and aggressive. His cock hardened as he felt a rush of adrenaline surge through him. He looked at Jessica as she hung up the phone in a mild panic, not realizing her husband was infected and his mind now falling to the influence.

He approached her with lustful intent.

Jessica was worried and nervous as she walked towards Ken. She could sense the change in him. His eyes seemed different, but there was also something else. Something inside her telling her to follow him.

Ken grabbed Jessica and pulled her into a rough kiss. His tongue was slimy as he explored her mouth. Jessica moaned softly as Ken ran his hands through her hair. He pulled her dress down exposing her full round breasts with big pink nipples.

"What's wrong with you?" she asked as she pushed him off of her.

Ken looked at her with lust in his eyes. He licked his lips and grinned.

"Nothing. It's just... You're so hot. And I... I want you."

He pulled off his shirt, showing off his chiseled muscles. He then proceeded to rip off his pants and underwear. He grabbed her face and brought it to his groin.

"Suck my cock," he growled.

Jessica hesitated. She wasn't sure if she wanted to do this, but she wasn't sure if Ken would take no for an answer. She then realized he must have gotten infected with whatever it was spreading around the city.

"Ken. Wait. I think-!" she started before Ken growled and forced his cock deep down her throat.

His cock was big, thick, and veiny. It pulsed with every heartbeat as it filled her mouth and throat.

"Yes! Suck it! Suck it good!" he groaned.

He thrust his hips, shoving his shaft down her throat. He held her head steady and used her mouth like a pussy. His balls slapped against her chin and her spit flowed over her chin and down onto her chest.

He looked down at her and smiled.

"God, you're so sexy," he panted.

As he said this, he thrust his hips forward one last time and shot his load into her mouth. His cock erupted like a fire hose, sending warm, sticky cum down her throat. She moaned as she felt his thick semen flow into her belly.

When he pulled out of her mouth, she coughed and sputtered. His cum oozed down her chin and onto her tits. She stared at him as he grinned at her. She was stunned. He looked different. His brow was larger, bushier, his body hair thicker, and his teeth looked almost jagged as he smiled down at her. As they locked eyes, her own faded to the same red as his, her mind and body starting to cave and primitive from the direct infection he provided her with his cock. It wasn't long before the two were fucking like no tomorrow, ooks and moans echoing through the apartment as they joined the other infected in indulging their instincts.

Grodd sat in his office as Zula and serviced his cock while he watched the news and local reports around the city. Pandemonium was slowly spreading and by the time they realized it was a virus, it would be too late. Monkey Business would have the city in his leathery palms for the taking to build his New Ape City as the paradigm for his vision of the world.