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Mason was a national hero. He enlisted into the army when he was 18 and had served his country in all types of combat situations all over the world. He climbed his way up and eventually became a member of the most well trained and deadly tactical division, the Delta Force. With his sharp mind and developed body it wasn't long before he had his very own squad at 28. He led the team into many dangerous situations and always brought everyone back into one piece. His nickname was the Shepherd as he always watched over his flock.

His tactical squad consisted of 3 other members. Jackson was about the same size, he stood at 6" and had brown hair and hazel eyes. His body toned from years of military training, he loved showing off his 6 pack. The military was a birthright for him as all the males in his family served. He was almost out however. In one more year his contract ended and he would be thirty. He looked forward to civilian life, able to settle down and start a family. Jackson was the squad's heavy machine gunner. He could lay cover like nobody else.

Mike was a massive man standing at 6' 3". He played college football as a defensive lineman and he looked like it. Don't let his size fool you; however, he could move fast and with purpose. He was a bit of a pyro and loved to blow things up. Naturally he fit well into the demolition and explosive expert role. Nicknamed tank due to his and how he was seemingly indestructible, he charged into a fight without fear.

Last on the squad was Jesse. Jesse was the youngest only at 25, but his skill as a top marksman and scout got him recruited on the squad. He was smaller at 5' 8" with an athletic body and blonde hair. His nickname was crackers and nobody would explain why. It pissed him off considerably every time it was used yet his team refused to call him anything but. Crackers was always looking for a way to do something cool and get a new name.

The team showed up to the briefing room and were handed their next assignment. A research facility in eastern Europe was doing inhuman experiments on people. The intel suggests using a new chemical weapon that could change the course of war. Mission is to infiltrate the research compound, capture the head scientist, and destroy the facility. This operation would be off the books, we are not supposed to be in this country. There would be no backup and if caught the government would deny any association. These terms did not fear these men and they accepted They had 48 hours to prep before they headed out.

At 2400 hours they parachuted from the plane. Dropping into the nearby woods, they marked it as a rendezvous spot if things went sideways. The squad moved to the perimeter as crackers set up his sniper and thermal scope. There didn't seem to be any guards stationed around the building. Crackers stayed, giving them an exit route as the three moved forward. They made it to the door and tested it, unlocked. They entered the facility and walled down the hall with their guns raised, ready for anything. Suddenly the hallway filled with gas. They turned and went for the exit, but didn't make it far as their vision blurred and they fell unconscious. Mason woke up strapped to an examination table. Panic set in as he tried to free himself from his restraints. Try as he might, he was pinned.

"No use trying to escape. There is no way you can break through those restraints, at least not yet." A voice rang out. Mason twisted and turned seeking the voice. Suddenly a 6' 5" lion wearing only a lab coat walked out of the shadows. This lion was massive and bulging with muscle. He walked up letting his hard 15" cock swaying in front him. "I'm sorry for the barbaric way we got you here, but we needed test subjects and you wouldn't have come willingly." The lion said.

"Who the hell are you? I am Captain Mason of the United States Army. You cannot do this to me!" Mason yelled.

"Me? You can call me Doctor Leo. Soon however you'll be calling me Master. I'm very aware of who you are, Shepherd." Leo spoke. "After all, I am the one who requested you."

"What are you talking about, you freak?" Mason replied.

"I needed strong bodies and a sharp mind, to survive this new batch. I think we've perfected it. You and your squad had caught my attention and I knew I needed to have you. I asked and your government sent you right over." The lion said.

"That's a lie! We came to put an end to your operation!" Mason replied.

"End? Who do you think is funding it? We are testing nanobots, technology your government supplied. We are building super soldiers and what better test subjects than some expendable delta force troops on an off the books mission." The lion explained. He grabbed a thick syringe of a shiny liquid and walked back over. "You see we use these bots to splice your DNA with animals to improve your physical ability. You will be stronger, faster, and be able to heal almost instantly. I tested it on myself as you can see. It works to an extent, but once the DNA is spliced the bots die. We need the bots to be able to reproduce and stay in the body, they would live in your fluids. Our previous bots also couldn't affect the mind. Loyalty is important and we want it guaranteed. I think this current batch has perfected them. Now hold still." Leo said.

Mason thrashed back and forth, freaking out, unable to break free. The Doc held down Mason's head with surprising strength and jabbed the needle right in his neck. Mason screamed as he felt the bots enter his blood stream. Immediately the bots took effect as his body began to grow.

"Can you feel the bots massaging your muscles? Doesn't it feel good?" The Lion asked. Mason's manhood began to rise in response. "Mmm, let's help get that blood pumping." He said as began stroking Mason's cock. Unfortunately for Mason it did feel good. Amazing in fact. His muscles expanded as his spine lengthened, growing taller reaching 6'5". The bot's next target was his hair follicles as brown fur grew all over his body and black fur grew in around his face and back.

"Yes yes, Don't resist the changes. Grow for me!" the Lion said enthusiastically, as he increased the speed of his strokes. Mason whined as he tried to fight the pleasure flowing through him. The bots finished up his changes as his face pushed out into a muzzle and his fingernails turned into sharp claws. His cock began to grow longer and thicker in the Doc's hands as it got slick with pre as his modest 6" grew to 12" and as thick as a soda can. As the transformation finished an intense wave of pleasure hit, sending Mason over the edge, shooting out the last of his human cum.

"A german shepherd, how appropriate." The lion laughed. What a handsome boy, you will be a good pet." Right then Mason's mind returned. What the hell was he doing? he thought. Mason flexed his new muscles and busted out of his restraints. He tried to make for the door, but an intense pain in his head made him drop to his knees and grab his head. "Ah, the mental override must be kicking in." The lion said as he stood above him. "The fun part of this stage is not only does it change your loyalties, but the bots will create false memories of anything said. So when I say Mason, you've always been gay. You love fucking and sucking your comrades as it was good stress relief and comradery. You love men, love their strong muscles, love turning humans into anthros. Most of all you love me, My cook is your favorite, your life is empty without it. As your master you'll happily raise your tail anytime I request it."

Mason tried to resist. He knew he wasn't gay. The time he had set with his squad was out of necessity so they'd work as a unit. Wait no, they never had sex, right? It was getting hard to remember. He specifically remembered eating out Jackson as Mike fucked his ass. God that was hot. I bet they would be even hotter as anthros. Gaining muscle mass and making their cocks grow. He was getting erect thinking of replaying that night but as dogs. The pain subsided as Mason opened his eyes to be greeted by a glorious sight. A big juicy 15" cock was hovering in front of his face. His master's cock, his favorite. He reached out, brought his face

close, and began licking. "Good boy. I see you've accepted your place." the lion said.

"Yes Master." Manson answered. "I love being your soldier, your pet, anything you want me to be." He said before swallowing his cock. Mason bobbed his head and swirled his lounge desperately trying to get his reward. It wasn't long before the loin grabbed the back of his head and shoved his entire length down his throat before cumming, forcing Mason to swallow all of it and cum along with him. He pulled out and Mason gave it a few licks, cleaning him off. "Thank you Master for that treat." Mason said.

"I had to give my puppy his favorite bone." The lion said. "Now stand up so I can get a better look at you." He ordered. Mason stood as he let his master feel him up. The now 6'5" shepherd had the body of a god. Leo ran his hand over his 8 pack and squeezed his pec. Mason's cock rose in response to being groped by his master. "Very nice. The first part of the experiment was a success. Your physical and mental transformation came along nicely. Now we have to see if the nanobots can reproduce. We designed them to reproduce in the balls, so if you come in or on someone they should be able to transform them in theory." He said as he fondled his sack. "Do you feel it? The bots inside your balls fusing with them, making them into a robot factory instead of a baby making factory?" He asked.

"Yesss..." Mason moaned. "They are so full. I need to cum..."

"Good, because we have our next test subject ready." The lion said.

Jackson didn't have as easy of a time as Mason did. Jackson woke up blind folded. They shut him up with some kind of aphrodisiac and made him go into heat. They strapped something over his cock that was sucking and giving pleasure while something wrapped around his balls that prevented him from cumming. A machine pounded his ass with a dildo constantly hitting his prostate. He was going insane, constantly on edge, unable to cum. His military training didn't prepare him for this.

Jackson heard the door open. "Let me out of here! Please, Let me cum!" He yelled, losing his grip on reality.

"Shh, it's ok Jackson. I can give you what you need." A voice said.

"Mason? Is that you? You sound different." Jacksonsaid.

"Always asking dumb questions, let's use that mouth for something more useful." Mason said as he shoved his cock right in his open mouth. Mason was so big and thick Jackson couldn't bit down on him if hewanted. Mason pushed in stretching the man's throat and began thrusting. Jackson was in such a haze and so needy he could barely register himself being used as a cock sleeve. Mason shoved his length all the way in him and came, forcing him to drink it all down. Mason pulled out as Jackson coughed. "That was fun, just like how we used to do it in the barracks." Mason said.

"What are you talking about, we've never done that." Jackson countered.

"Of course we did. You always said you loved my cock the most , besides our masters of course. You used to sneak into my bunk at night and blow me just to taste my cock. Once we started hooking up with the rest of the squad you still preferred me. I would hit your prostate just right. Until Master fucked you silly when we agreed to work for him I was always your number one top." Marion said.

Jackson stopped and thought, that does sound like something he'd say. Thinking back images did appear of him blowing Mason in the barracks as he jerked off. Him worshiping his cock, begging for his cum. These images just sent him more on edge as the bots started to take effect.

"Please Mason. Use that magnificent cock and make me cum. I need it, please." Jackson begged.

"Well when you ask so politely." Mason said with a chuckle. He moved the dildo machine and lined himself up behind him. He pushed in and began thrusting. Mason's cock felt better than the machine, but when he would cross over the edge it still wouldn't let him cum.

"Why... can't... I... cum?" Jackson moaned between thrusts.

"You have to let yourself cum. You have to grow, break out of your restraints and cum as your true self." Mason explained. As if on cue, Jackson's body began to push out. Muscles expanded as yellow fur began to spread across his body. "Yes, yes! Grow for me, Grow for Master!" Mason yelled enthusiastically.

Grow Jackson did as he reached 6'6". The nanobots reshaping his face as a muzzle grew in and ears reshaped at the top of his head. His hands pushed out and became Claws. Jackson flexed his new muscles and busted out of the restraints. Jackson reached down to free his cock and balls from the machine when Jackson grabbed his arms and pulled them back.

“Naughty pup. You know the rules, no hands." Jackson said as he continued to thrust into him.

Jackson whined in pain and Pleasure as he was kept on edge. How am I supposed to get out of this without my hands? Jackson thought. The nanobots reading the situation got to work. Jacksons cock began to grow even longer and thicker, balls inflating to the size of softballs. Jackson's cock filled the machine, clogging it. The pressure was killing him as his cook continued to grow. The pressure built up till suddenly the machine exploded and he came with the intensity of a fire hose. Jackson's eyes rolled back as he let out the most satisfying moan. He clinched his ass on Mason's dick forcing Mason to cum inside him. Mason pulled out as they collapsed on the floor together. They turned to face each other and embraced in a deep kiss.

"Very sweet gentlemen, but I need you to stand so we can complete our notes." The lion said over the speakers. Both dogs stood allowing their master to get a full view. Jackson now stood as a 6' 6" yellow lab. His muscles so large any body builder would be jealous. His 3ft cock hung below with his heavy soft ball sized ball underneath. "Mmm, very handsome. I guess those years of carrying a heavy weapon really transferred over huh." the lion said with a chuckle.

"Thank you Master, I'm glad my body pleases you." Jackson said as his cock started to rise from his master's praise.

"I'll show you how much it pleases me once you're done with your mission." The lion said. "The third member of your squad is in the next room. We weren't sure if these two experiments would work so we didn't do anything but tie him to a chair. Go bring him into the fold." He ordered.

"Yes Master!" They said in unison.

Mike was tied to a metal chair in the middle of an empty room. He struggled as best he could yet he could not break his binds. He was about to give up hope when the door opened and two beasts walked in.

“What do you freaks want?" Mike yelled.

“We want you to join us, Tank." Mason answered.

“Mason? Jackson? Is that you? Get me out of here!" Mike said.

“Sure no problem, we just have to do one little thing first." Mason said as he dropped to his knees. He lifted Jackson's massive cock over his shoulder pointing at Mike as he began to lick and stroke the base. “Target spotted." he said.

“Uh, guys, what are you doing?" Mike asked.

“Target locked." Jackson added.

“Guys this isn't funny, free me and let's fix you." Mike begged.

“Weapon primed, ready to fire." Jackson said as he began to drool.

“Guys stop this now, what is wrong with you!?" Mike yelled.

“Fire!" Mason ordered. With a thrust and moan Jackson shot out a gallon of cum that hit Mike in the chest with such force it knocked him back onto the ground.

“What the fuck!" Mike yelled. He looked down at his chest and saw how his clothes began to dissolve in front of his eyes. He started to freak out as he thought they hit him with some kind of acid. He looked closer after realizing there was no burn to see that he was in fact growing hair. Gray fur began to pop up as his clothes fell apart leaving him naked. He felt a tingle all over his body as his muscles began to expand. It felt surprisingly good as his own member began to rise. His muscles, while large, were not well defined, they were flat and ridged. It almost looked like the army's bullet proof plates. The nanobots were finishing up his transformation as he reached 7ft tall. He flexed and busted out of his restraints as he started stroking his own dick. Each stroke elongated, making it thicker. He kept stroking until it reached 14". With his transformation finished his body shuttered and he came straight up in the air then rained back down on him. Mike got up now as a massive gray pit bull.

“Wow, now you're truly a tank! I hope you enjoyed the show Master!" Mason said into the camera. Mason ran and tried to give Mike a hug, but when he got close Mike grabbed him and threw him against the wall. Mike walked to the door and ripped it off its hinges.

“Mike, what are you doing?!" Jackson yelled.

“I'm going to kill this master of yours and find a way to reverse this." Mike said sternly.

“Master, what should we do?!" Jackson asked into the camera.

“Kiss him!" The lion replied.

Jackson got in close and surprised him by locking lips. Mike tried to push him off, but found the kiss intoxicating. In just a few seconds he was passionately returning it as more nanobots from Jackson saliva got into his system. Mason got off the floor and walked up to the couple. He started stroking Mike's cock and whispering in his ear.

“Don't resist it. This reminds me of how I found out you were gay. You and Jackson making out in the barracks when I walked in on you. Us three would sneak off and fuck all the time after that, before crackers joined us. You were always such a slut, there wasn't a guy in that barracks you didn't try to fuck. That's why it was an easy transition for you to work for Master. You get to fuck hot guys and turn them into hotter anthros. Don't you remember?" Mason asked.

“I do.." Mike said, breaking the kiss. “It just doesn't make sense.." He said, grabbing his head trying to make sense of everything.

“If Mike is still having a hard time remembering, maybe you should remind him with a threesome, just like how you did it in the barracks. I'm sure pumping him full of cum will help him remember." The lion said through the speakers.

“Great idea Master." Jackson said. “Why don't you bend over and let me help you remember." He said while stroking his shaft.

“No way." Mike said, shaking his head. “I couldn't take you back in the barracks with your human dick, no way I can take that monster. Mason can have my ass and I'll use my mouth on that baby." He said as he got on his knees.

The boys didn't argue as they got into position. Mason shoved his tongue into Mike's ass as he lubed up his hole to get it ready. Mike was already slobbering over Jackson's cock as he used both hands and worshiped the shaft and groped his massive balls. Mason pulled out and lined his cock up. He grabbed Mike's hips and thrusted in, causing the pitbull to moan. He trusted in and out rubbing against his prostate making the dog see stars, waves of pleasure radiated from his head to his toes. Mike tried to pull it together and get back to work on the cock in front of him. He could feel the boys getting close as his cock throbbed in his hands as Mason picked up the pace.

“Fuck, you're so tight. I'm about to cum." Mason said.

“Yesss.. Fill me up, let's cum together." Mike replied.

Mason with one last thrust pulled Jackson down to his base and came with a howl, causing the other two to come as well. Jackson desperately tried to drink as much of his cum as he could yet he was still drenched from the load. The dogs stood on wobbly knees and helped each other up.

“How do you feel now Tank? Everything make sense now?" The lion asked over the speakers.

“I feel amazing Master, so full. I remember things clearly now, thank you." Mike answered.

“Good. Now from now on make sure you get your fluids inside the target or else the bots can't get inside their blood and brain." He said. “Now I think we have one last pack member to pick up."

“Yes Master!" The dogs said in unison with big smiles

Jesse was getting concerned. It had been two hours, it shouldn't have been so long. Get in, plant the explosives, get out. That was the mission. He debated going against Mason's orders and going in after them. Yet if he did and they did plant the explosives he could be walking into his own grave. The thought of calling the chopper and leaving crossed his mind, but if they were alive and he left he could never forgive himself. So he sat there, watching. Looking for any movement. Praying his friends were ok. As he laid there he heard a twig snap. Shit someone is behind me he thought. In one fluid motion he rolled on his back and pulled his side arm bang bang bang he fired at the noise. The muzzle flash showing a monstrous pitbull approaching. The bullets just bounced right off him. Fuck this he thought, he wasn't going to be eaten alive by a giant monster. He put the gun to his own head and was about to pull the trigger when both of his arms were grabbed and he was forced to drop his weapon. He looked to his sides to see a massive german shepherd and yellow lab holding him down. The pitbull walked up and stood above him.

“That wasn't very nice Crackers." Mike said.

“MIKE?!" Jesse yelled. “What the fuck happened to you?!"

“Something wonderful." Mason replied. He turned his head as he brought him into a deep kiss.

“Hey now don't hog him!" Jackson said as he turned his head and forced his tongue into Jesse's mouth.

Jesse felt a pressure on his chest as he looked up to see Mike sitting on him with his hard 14" cock in his face. The bots already began messing with his mind as he naturally started licking it. Mason and Jackson let go of his hands as he went at it with renewed vigor. Jesse slurped it down, swallowing his pre as he stroked him and played with his balls.

“That's it slut, let your inner desires out. We all saw you looking at us in the showers in the barracks. I remember when we eventually cornered you, we backed you up to the wall as you sank down to your knees. You thought you were in trouble and were surprised when we pulled out our dicks for you to worship. You gobbled them down like it was your last meal, you were insatiable. After that you would spread your hole for anyone that asked. You were the only one who can take all of Jackson's cock from all that practice. You were so happy when we changed your nickname from crackers to slut. Don't you remember?"

“Yess.. You guys were always so hot. I couldn't resist." Jesse said, pulling himself off the cock just momentarily before engulfing it again. A bulge formed in Jesse's pants. Jackson noticed it and moved over shredding his pants and freeing his own 5" member before he started licking and teasing him. Mike was at his limit and shoved his cock down Jesse's throat forcing him to swallow his whole load causing Jesse to cum over Jackson's face.

“Fucking hell." Jackson said. “You got cum in my eye. Fucking slut, get it up and bend over."

“Yessir." Jesse said obeying. Jackson lined up his massive 3ft cock against his ass and started slowly pushing in. “Fuck, you're too big." Jesse said.

“You've taken it before, now shut up." Jackson said as he continued.

The bots quickly ran to that area and began getting to work. They loosened up his hole and made him more durable to make sure there would be no damage. They then began to start to swell his ass out as fur began to spread. His body grew to 6'2" as his thighs and hips expanded out making him the perfect breeding machine. His upper muscles grew slightly as his 6 pack came in. His face pushed out into a muzzle and he began to pant as Jackson pushed him down to his base. Jackson was so large you could see the outline of his cock in his stomach.

“Fuck that's hot." Mason said. He walked over to Mike and brought him in for a kiss before stroking both of their cocks together as they watched the show in front of them. Nobody could take a cock like Jesse.

Jesse's transformation was finishing up as his ears shifted to the top of his head and his hands pushed out into sharp claws. Jackson was at his limit as he made one last thrust into the new dog and came. Cum shot up and out Jesse's mouth and leaked out his ass. Jackson pulled out as more cum flooded out. Standing there was now a 6' greyhound with a fat ass. His new powerful thighs and calves made him incredibly fast allowing him to scout an area in no time. His lean upper frame allowed for less wind resistance when running. Right now however he struggled to stand even with his powerful lower body

“Fuck Jackson, that was the best fuck I've had in a while." Jesse said. “Thanks for filling this slut. I always feel so empty without your cock."

“You're welcome slut." Jackson said. “You ready for round 2?"

“No time." Mason interrupted. “We need to report back to Master." With a nod they all made their way back to the facility. They walked into the lab and saw a mixture of different anthros and humans all in lab coats diligently working. They walked past the scientists to the back office.

“Master, the Delta Force K-9s at your service." Mason said as they all saluted. The lion got up from his desk with a smile and walked up to each feeling their bodies and stroking their cocks before sitting back down.

“At ease. I could not hope for better results. I look forward to playing with you all in due time. Right now however I already have your first mission. One of our scientists escaped with classified documents in an attempt to expose us. Your mission is to find the scientist and the documents. Bring back the scientist, convert him into an anthro. He has a bright mind, hate to waste it. He was last spotted in these coordinates 24 hours ago. Don't expose yourselves. Do you understand?" The lion asked as he tossed them a file.

The dogs saluted once more “Yes Master!" They said unison. The hunt began.