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TAR Lab Trials

The Shaken ground

By Matthias11

Derk was large masculine rat. His brown fur made him stand out amongst all of the other white lab rats. Standing out was not something that bothered him, he knew he was fit, strong and virile. Caged alone, his human captors kept him isolated from the rest of the rats. With the exception of once a month when they would put him into a larger cage with a select female to mate with, those days were his only joy and he often found himself alone and frustrated.

Derk felt like the only reason for his captivity was to lie around in waiting to mate for a brief moment then to be alone again. He had grown to despise the human creatures that passed his cage daily ignoring his existence. They never came to him or handled him; his food dish was even filled from somewhere above to ensure his isolation. But today things would be different.

Derk watched with one eye lazily as a different looking human approached his cage. Instead of moving along the human stopped and stood for a moment directly in front of him.

"This one is your prime breeder right?" The human women asked turning toward another man in the room. Her booming voice caused Derk to cringe for a moment as his ears twitched. This was different he thought.

Opening both eyes Derk sat quietly observing the human. She stood before him with long golden hair unlike anything he had ever seen before.

"Yeah that's him the brown one." The other human spoke back across the room. The words they spoke were undistinguishable to Derk but he knew something was going on. Without replying the human with the golden hair began to reach a hand toward Derk's cage.

Derk watched curiously as the bright white hand moved towards the cage. As the humans gloved hand came into contact with the cold steel bars it paused for a moment making some kind of strange movements. There was a clank and twang sound as the cage door began to be lifted up by the human's hand.

Derk began to become nervous as he watched the giant white glove slowly moving into his cage. He realized right away it was coming straight at him. Panicking he looked around franticly thinking about how to escape. Before he could decide what to do he felt the smooth edges of the hand grasping him tightly. This had never happened before he thought. Derk considered trying to bit or scratch but he found himself becoming more curious then scared. He found the sudden attention pleasing even if it was from a human. Trying to relax the best he could Derk just watched intently as he was moved through the air and across the room.

As his journey began Derk watched as he passed through several large rooms and past many other humans. The human holding him was making a pleasant humming sound that helped reassure to him that something new and nice was waiting for him.

After a few more twists and turns Derk found himself being lowered toward the ground. Looking down he watched as a strange floor was coming closer. It was a white tile floor like the ones he had seen everywhere before, but covering this floor was hundreds of small sliver discs. Still more curious then scared he simply let the human place him down on the floor in the middle of the room.

The silver discs felt cool against his bare foot paw, but there seemed to be nothing out of the ordinary about them. Derk glanced back up at the human who was backing off into some unseen area. He was all alone once again. Beginning to feel sad once more Derk looked across this strange new room. It seemed to stretch on as far as he could see, the little shiny discs covering everything. The room was completely bare with the exception of a strange white lump resting about in the middle. The white plastic lump almost looked like a rock or a bench standing out amongst the silver discs like a little island. Derk began to plan his next move when he suddenly heard human voices echoing from somewhere around him.

"As you all know when it comes to breeding rats and mice and other smaller rodents we mostly have to rely on natures method." The blonde tech spoke to several male colleagues. "But that will be a thing of the past; if the experiment goes well today we may soon be able to develop a much faster breeding mechanism."

"Well, show us what your invention can do Danelle." The Doctor said adjusting his clipboard. Without another word Danelle pressed a green start button on her control panel. A very faint and soft eclectic hum began to fill the room.

Down below on the floor Derk could hear the strange humming sound loud and clear. It was obvious to him that it was something under the floor. An instant later he began to feel strange vibrations emanating from under his feet. Startled at first Derk began to dance his way around the room trying to keep his foot paws off the floor. After a few short hops around he realized this task was impossible and dared to stop a moment to leave both of his feet planted firmly on the floor.

One foot was on a silver disc while the other was in the space between the discs. Derk realized right away that the strange vibration was coming from the metallic disc he had his foot on. That's not right. He thought as he moved his other foot paw onto a disc. Immediately it began to vibrate in time with his other foot paw. It didn't seem dangerous; in fact it felt kind of nice he thought as he stood feeling the vibrations traveling up his legs.

"Time to find a way out." He said becoming used to the new sensation on his feet. Derk then began to slowly walk across the floor. The slow vibrating on each leg felt nice with each step he took. It felt so nice he found himself dragging his tail across the floor to let it catch some of the pulsating.

As the rat made his way across the room he began to realize something was changing. The tingling feeling on his feet now seemed to slowly spread up his legs and he could feel the vibrations now at his knees. Despite how nice it felt he was surprised that he could feel it that high up. Pausing for a moment Derk wanted to make sure he wasn't just imagining things. With both foot paws resting steady on the floor Derk immediately felt the tingling in his legs begin to rise. The feeling quickly spread into his thighs. The vibrations were getting stronger he realized as his feet were beginning to become numb. Looking around he searched for a way off this floor. Trying to think of where to go next Derk felt an itching sensation beginning to travel up his inner thighs, in an unconscious reaction he felt himself beginning to become aroused. He felt his cock twitch slightly as it began to be stirred from the vibrations.

Feeling embarrassed as his pink member began to extend without his consent Derk looked across the room and spotted the white island that stuck up offering safety from the silver discs. It was still a good distance away but Derk knew he could make it.

Doubling his effort the rat began to run across the floor as quickly as he could. As his numb feet began moving across the floor he was nimbly trying to avoid touching the sliver discs. After a few awkward hops Derk felt his foot slip and he went tumbling to the floor.

In a flash his whole world was shaking as the strong vibrations filled his entire body. Even his vision was rippling and blurring under the effects. Feeling himself being over stimulated Derk stumbled onto his four paws attempting to get up. The sensations on his legs were now so much that he could no longer control them properly. Falling back down Derk found himself on all fours now crawling across the shuddering ground.

Derk felt a moan escape his lips as he felt a strong muscle contracting deep in his groin bringing his cock fully erect. As he slowly crawled Derk looked down between his legs at his large erection. The head of his cock was swaying back and forth with every movement he made, he watched through blurry eyes as a stream of precum was slowly oozing from his little hole and dangling down leaving a trail behind him.

He could feel the violent vibrations pulsing through his member forcing it to excrete more of his juices. Moaning once again Derk found it incredibly hard to keep crawling across the floor. Every nerve in his body was trembling about and tingling with delight and all he could think about was thrusting his hard cock against the gyrating floor.

Just as the rat could not take anymore he looked back up to see the white plastic island safely within reach. Reaching out with both paws he grasp the smooth shelf and began to pull himself to safely. As his legs lifted away from the vibrating floor he felt one last spurt of precum leak from his cock.

Climbing up on the strange shelf he found there seemed to be a nice little ledge here he could rest his numb foot paws and on the other side there seemed to be a place for hand grips. The little plastic island reminded him of his water dish, if it had been over turned. With his belly pressing against the smooth object Derk found himself having to lean forward resting his weight more on his upper body. Letting himself lay on the bowl shape island he felt his hands come to a stop against another ledge in front of him. It was not the ideal resting place, but it would give him a moment away from the vibrations to think to himself.

With his legs slightly spread the rat rested with his weight pushing forward on his chest and hands. He found himself having to lay flat against the curved shape object in order to feel comfortable. Part of Derk wanted to just jump back down on the floor and writhe in the sensation. But his logical mind knew better, there would always be time to come back to this place and do that later once he found a way out.

Despite his logical attempts he found himself thinking about how the vibrations had felt moving across his cock stimulating every nerve. He felt his member strain once again as his groin muscles twitched. He felt his bulging cock rub against the smooth plastic sides smearing his precum all around the island, then in the next moment the smooth plastic feeling was gone and replaced as he felt his penis push through something.

A loud click sent a surge of adrenaline through the rat as something snapped around his ankles below. Gasping he tried to jump to his feet but found them bound tightly against the island. "What the?" He called out as he steadied his balance once more falling forward bending over the curved shaped self. His paws came to a rest on the ledge in front of him again and once more he felt his cock press into something soft. Pushing off with his paws Derk forced himself upright once more. This time as he fought for balance he examined the middle of this island, right away he could see that the white plastic seemed to dip in the center at crotch height where there was a strange hole. The hole was filled with something that was also white helping to hide its presence.

In the next moment Derk felt himself falling forward again no longer able to keep his balance with the restraints around his ankles. Now finding himself once again laying forward he gritted his teeth as he felt his cock slide back into the hole once more. Fearing that something was going to harm his cock Derk found himself whimpering. A moment later much to his surprise the opposite happened. A strange flow of air brushed across his hidden member. It sent a wonderful tingling across his cock head and quickly increased his arousal.

Partly in lust and partly curious the rat push his hips forward farther sticking his member into the depths even more. He was rewarded as he felt something wet suddenly attached itself to his cock. Surprised at first Derk gasp out loudly, but within seconds the strange tugging feeling on him turned his gasp into moans. He had no idea what was going on but it felt incredible. Moaning happily he rocked his hips back and forth humping this strange lover

Derk had become so wrapped up in the sudden pleasure that he didn't even notice as a second pair of shackles latched around his wrists. Leaning forward with all his weight the rat began to fuck the device furiously. He could feel an incredible orgasm approaching. All the vibrations he had endured earlier had relaxed and softened him up so that now every touch felt twice as incredible as normal. Just when he thought he couldn't take anymore suddenly there came another loud click as the whole island slightly dipped.

Taken aback Derk broke from his sexual trance and began to stare about nervously. Had everything just moved for a second? He wondered. Before he could think anymore his question was answered as the island suddenly sank another inch into the floor. Not feeling safe anymore Derk wanted to leave, he tugged at his paws only to realize that they were now immobile.

"I want to leave now!" He squeaked as he fought against the restraints.

The island sank another inch. When it moved this time Derk felt something poke him on the backside. Startled he looked around behind him to see a long pole that had been extended. Realizing that the prodding was hitting the base of his tail he whimpered as he began to struggle once more. He didn't know exactly what was going on but he knew that if the island lowered itself once more this object would penetrate his virgin tailhole.

To his horror he felt the ground begin to slowly rise once more as the white platform lowered a bit farther. Derk winced as he felt the rod begin to press against him. It was warm and slimly. Derk gritted his teeth again as he felt the slick object begin to slid against him pressing his ass checks slowly apart.

"No please!" Derk pleaded as he cringed as a sudden burst of pain shoot through him as the object stretched his anus wide open. Derk groaned in shock at the uncomfortable rod continued to slide farther inside of him. Soon his groans and gasps began to turn into soft moans. The island now had sunk as low as it could go but seemed to be suspended on a type of spring that caused it to move up and down slightly as the rat moved.

As Derk's soft ass became accustom to the invading object great pleasure began to fill him as the rod soft slid back and forth against his movements. His rectum muscles contracted tightly around the invader stimulating his prostrate and causing his hips to jerk with pleasure. Moaning once more Derk found himself whishing he could reach back and stick the object in deeper. As the rat found himself pushing back against this pleasure pole in his rear, he suddenly began to feel the great sucking feeling on his cock once more. The double stimulation was now sending enough pleasure through him that all his thoughts were lost. With the rats mind giving into the primal lust he couldn't help but to began to thrust and push in all directions.

The rat's squeaks of pleasure filled the room as he twitched and jerked against the white island. On one side an unknown hole was greedily sucking up every drop of precum he was producing and on the other end his ass was being pumped by a warm rod filling his insides. The movement from one side to the other caused intense sparks of pleasure to ebb from his anus, through his prostrate, down through his balls and back up and out of his cock. The feeling was unreal, Derk found his limbs going slack as he could no longer stand. Lying still in place Derk still felt the rod in his ass gently bouncing back and forth keeping him stretched out inside; as the tugging and sucking on his cock also continued at its own pace.

Derk moaned rapidly as he felt his balls begin to tighten. All the muscles in his groin had gone taut and he knew his cum was about to burst forth. Holding his breath the rat tried to brace himself for the upcoming orgasm. Right as he was about to go over the edge Derk felt the pole in his ass suddenly give one long thrust, penetrating deeper into him them it had previously been. Derk screamed in bliss as the last jolt sent a wall of pleasure crashing through his cock. Deep inside the island a suction device sucked nosily as think jets of cum began to spill down the tube into the collection container below.

Derk felt tears rolling down his eyes as the last few sharp spasm's shook through his loins emptying every drop of seed he contained. Breathing heavily the rat laid his head down on the smooth white surface. All he could think about was the wonderful feeling that still filled him as his body quivered. I hope the humans take me out more often Derk thought as he drifted off to sleep.

"Looks like the subject used your collection device." The Doctor said marking his notepad.

"Yes and the data here shows we received enough seamen to use on at least 20 females." Danelle said surprised looking at a monitor. "The vibration plates seemed to loosen him up quite nicely."

"I can see this tool being very useful Danelle, I want you to begin work immediately on creating on smaller and more compact method of use, and also on creating a much larger design." The Doctor said.

"And the subject?" Danelle asked.

"No need to keep him isolated anymore, put him back with the general test subjects." The Doctor ordered.

"I hear Steve has some subjects that are recovering from experiments also; I will see if they can share a cage." Danelle said.

"Very good, and now I am off to prepare for the next experiment." The Doctor replied.