Option Three, Physical

Weighing over the different options over in her mind, Samus thought about what exactly she wanted. "I mean, sure the short term would feel good, but the long term option sounds much better. And I'm not sure I'm ready for more breasts." Samus laughed. "Pretty sure if I felt any more pleasure my mind would break."

"Alright computer." Samus turned to the screen. "I'd like the third option, the long term increased milk production."

"Certainly Samus." The female computer voice responded. "Would you like the physical or the artificial method?"

Thinking over the two options, Samus made her decision. She didn't want to go with the artificial method, believing that may do something like inject her with mystery chemicals. "Physical method please."

"Very well. Please position yourself back on the platform while I get things ready." The computer responded.

Samus followed the computer's orders, moving her large cow body backward back onto the platform. Once again the familiar clamps returned and clicked around each of her ankles, though that wasn't all that was happening. As she was getting situated, the back wall of the barn behind her began to lower into the ground, revealing the large open grazing field behind her.

Wondering what the computer was doing, Samus angled her upper body to face behind her, watching to see what was happening. However, as she watched the wall finish descending into the ground, Samus failed to notice as a needle filled with a pink fluid rose up underneath her, before painlessly sinking itself into a specific space just above her udder. Once all of the pink fluid had been injected, the needle withdrew and sank back into the floor without Samus ever knowing it was there.

When the wall had finished descending, a large chunk of the grass field slid away, revealing a large, rectangular hole in the ground. Samus could hear some machinery whirling, like an elevator being used. However, as the elevator finished rising, Samus' eyes widened with shock and slight panic at the sight behind her.

Standing in the grass field was a prime specimen of a bull. It was large, its muscled body even larger than her cow lower body, and its form rippled with strong muscle. Its entire body was covered in pure black fur, and sitting atop its head were two huge, impressive horns that curved forward towards the end. But the part of the bull that caught Samus' attention the most was its impressive balls and large sheath. The balls had to be the size of small melons, and the sheath was about as round as a small soda can.

"Computer, what is happening?! Why is that bull there!?" Samus asked, slightly panicked as the bull noticed her, his large nose beginning to flare as he took in long, deep breaths.

"Option 3, physical insemination, is about 50% complete." The computer responded. "In order to stimulate breast and udder growth, as well as increased milk production, the subject will be impregnated so as to achieve the biological function of milk production. Expected results should result in a 150% increase in milk production, as well as a possible 25% - 50% increase in breast and udder size."

Samus' eyes widened. "Wait a second, I'm not ready for kids! I didn't think this is what the upgrade meant! Computer, cancel the- ooooooh." Samus was cut off as the bull had walked behind her during her panic, and after taking a large sniff of her pussy, took a long upward lick with its broad tongue.

"I'm sorry Samus, but at this stage of the procedure there is nothing that can be done. Not only has your body been prepped to be be as fertile as possible, but retrieving the bull at this stage would be dangerous and would result in possible injuries and damages. We will be sure to look after you during your pregnancy and offer you routine milking as well."

At this point Samus barely heard the computer as the bull continued to prepare her. His large tongue managed to slide across her entire pussy, making her grow wet with increased arousal at its touch. She barely noticed when the bull had stopped, and only remembered what was happening when it hopped up and pressed its heavy weight across her back.

"Wait a second, I'm still not too sure about this! Surely there has to be another MOOOOO." Samus tried to plee with the computer but was cut off once more, her eyes rolling back in pleasure as, after a few practice swings, the bull managed to slide its length inside of her pussy. Samus' mind, unable to handle the pleasure and the source it was coming from, temporarily snapped, leading her to moo like a normal cow.

Samus continued to moo, her eyes rolling out and her tongue hanging out as the bull began to thrust in and out of her pussy in brutal fashion. The bull's large balls swayed back and forth under them, occasionally slamming against Samus' udder as they churned and tightened, beginning to prepare its large load. The bull's cock meanwhile thrusted in and out of Samus' cunt, hitting the furthest depths of her pussy with its blunt head, occasionally slamming against her cervix like a battering ram as it tried to get through.

Unable to comprehend anything, Samus just stood there dumbly and took it like the cow she had become, only able to take in all the pleasure that came with being bred. As the bull slammed back and forth, Samus' entire body shook with the impact of each thrust. Her large ass took the blunt of the ****, jiggling with each forceful impact of the bull's hips. Her heavy breasts swayed back and forth as well, creating loud slapping sounds as they clapped together and swung back against Samus' chest.

As the sounds of mooing, clapping, and the bull snorting filled the barn, Samus' body couldn't handle the pleasure anymore. Letting out a long, powerful "MOOOOO", Samus came. Her entire body froze, seizing from the pleasure as her cunt tried to milk the bull for all it was worth.

The bull, fulfilling its purpose, slammed forward as deep as possible into Samus as she began to cum. With one last powerful slam, the head of the bull's cock rammed through Samus' cervix as it began to throb and twitch. Once it was as deep as possible, the bull's sack tightened around its large balls, milking them for every last drop that could be produced.

Samus continued to moo as she felt the bull's warmth fill her to the core, the bull's thick semen quickly filling up every inch of her fertile womb. Having been plugged by the bull's blunt head, the semen that continued to shoot out had nowhere to go, and began to stretch Samus' womb as the semen spread out to her fallopian tubes. The small part of Samus that could still think swore she could feel the semen as it invaded her, the bull's fertile swimmers seeking her fertile eggs and inseminating her.

After several minutes the bull finally hopped off of Samus' back, leaving her panting and slowly regaining consciousness as the machine quickly got to work. The moment the bull had pulled out of her, a small metal arm quickly rose up and slid a piece of tape across Samus' pussy. The arm quickly retracted, leaving Samus' swollen stomach full of semen unable to get rid of or leak a single drop of the bull's seed.

As the bull walked back into the field, it was taken away back down the elevator as the shackles around Samus' ankles unclamped. Samus didn't really notice any of this, still shaken by what had just happened. Sure, she had been fucked by a bull and most likely impregnated, but the part that still caught her off guard was how good it had felt.

"Physical insemination complete. Scans show you are officially pregnant with two young. Congratulations Samus. Expected pregnancy should take around nine to ten months. This unit and enclosure will look after and care for you during that time. Feel free to rest in one of the nearby stalls or grazing fields, and if you have any questions or concerns, feel free to ask."

Samus looked up towards the computer, a small grin appearing on her face. "Yes, I do have a question. When can I see that bull again?"