Bo wasn't sure what the dog was trying to do, but she could definitely feel something hitting her pussy entrance. But for the life of her, she couldn't figure out what it was. She knew about a dog's knot, from her experience with Dodger, but it wasn't anything quite like this.

Curiosity took the better of her as she reached between her legs to feel what was bumping so hard against her entrance. She gasped aloud when she felt and realized that it was Bruiser's knot. Tame kind of knot that Dodger had locked into her at the lake, but much, much bigger.

For the first time she was getting a little concerned for her safety. She reluctantly decided to terminate this fucking and tried to pull away from the St-Bernard. But Bruiser's forelegs held on to her tightly and prevented her from escaping his cock.

He just kept on lunging forward. And with each thrust Bo could feel that knot striking harder and harder against her sensitive pussy. Tears were starting to stream down her cheeks from the pain she was feeling.

For what seemed an eternity Bruiser kept trying to shove his knot past her resistance. Bo didn't believe that that would be possible. Then in one powerful lunge, the knot found itself inside of her, and they were tied.

When she felt that bulbous knot break into her Bo could only gasp out in shock and surprise. She had never felt so full in her entire promiscuous life.

Now that he knew himself securely tied to his mistress, Bruiser reduced his pace a notch. He kept fucking his cock, as much as he could, deeply inside her clenching pussy.

Recovering from the shock of the dog's knot penetrating her, Bo started feeling good about it again. She began to join in the dog's effort of fucking. She was a bit disappointed that he could only move a little in his fuck movements, due to the knot. The width of his knot also forced her to open her legs wider apart to reduce the strain to her vagina.

Bruiser on the other hand was used to this limitation. It was expected to him, at least. He leisurely kept on fucking into this bitch's tight twat. In the dog's own experience, this had to be the tightest cunt that he had ever buried his cock into.

Bo settled in for the slow fuck that her St-Bernard was now giving her. One benefit that she soon discovered to the dog's shortened strokes was that it extended it far beyond any man ever could maintain. She looked up at the alarm clock and saw that ten minutes had passed since the dog first entered her vagina. And it showed no sign of loosing any of its virility.

The thickness of her pet's cock guaranteed that with each movement, no matter how minute, he would be rubbing against her now hypersensitive clit. Bo Derek was experiencing multiple orgasms as she had never felt before.

In the past, she had had a few human lovers who had managed to make her cum two, sometimes three times during a fuck session. But Bruiser had already made her cum at least six times and showed no signs of needing to stop.

After what seemed an eternity, Bo finally felt the warm jet of doggy jism being shot deep inside of her. This automatically triggered yet another orgasm, which she yelped so loud that she was worried that it would wake her slumbering husband.

She looked up at the clock to be amazed that over thirty minutes had passed since he first entered her.

"Oh, my God!" She said breathlessly. "H... he's been fuc... fucking me for that lo... long."

So much doggy jism was being pumped into her already overstuffed cunt that it had no place to go but to squirt out past the plugging cock. She could feel it streaming down her naked thighs as the dog kept on shooting his load.

When she finally felt the cum stop squirting into her pussy, Bo was sure that he was done. But the dog had exhausted her so much that she had to collapse her arms and fell to her face on the ground. Her butt was kept up because it remained impaled by Bruiser's cock and knot. She fell asleep in that position.

She was sure that they were done for the night. But Bruiser had other ideas. His cock had not lost any of its rigidity. He knew from past experiences with his harem of bitches that he would be ready to continue soon enough.

Part Four

After about fifteen minutes of rest, Bruiser began rocking his butt once more. But with Bo passed out under him, there was not much interaction at this time. But being a dog, he didn't really mind her non-participation. He kept on humping his ass against her upraised butt.

His balls were refilling rapidly with fresh sperm and his energy was increasing accordingly. Bo's slumbering body also was now beginning to have some reaction to the steady stroking of the huge beast above her. Slowly, but steadily, she began to regain consciousness. Even before she was totally awake, her body had started humping back at the dog's assault.

Bo's eyes fluttered open slowly as she awoke from her sleep. She could feel the cock sliding in and out of her pussy, but she was confused about why she was on the floor next to the bed. And when she looked up she could see John still sleeping soundly in bed.

'Then who's fucking me?' She tried to remember.

When she looked back and saw Bruiser on top of her, her memories of the last few hours flooded back at her and she just smiled.

"My! What a good lover you are," she told the dog.

She couldn't believe that she was about to get yet another round from this dog. The first one had totally exhausted her. How was she ever going to be able to go through another of the same.

Then the most unusual thing happened. Bruiser, still tied to her, was turning himself around to her. She felt his forelegs unclench her waist and land on one side. This was soon followed by a furry hindleg sliding across her back. The inter-species lovers were now butt-to-butt, but remained locked together by the dog's thick knot.

Bo was more confused then ever now. She never imagined that any cock could do something so weird. But despite this, she loved the sensations it generated and it twisted around inside her pussy.

She soon discovered though, that in this position, Bruiser was no longer thrusting into her pussy. For a horny star like Bo Derek this was not an acceptable situation. She came to the realization that if she wanted to get fucked again, then she would have to do the maneuvering.

She began to move her body to and fro, jabbing her butt against Bruiser's. It wasn't as satisfying as the animalistic fervor of the beast, but the huge cock in her compensated for that. She rapidly discovered the difficulty that Bruiser must have had fucking deeply in her because of the restrictions imposed by the huge knot tied in her.

She found that she couldn't enjoy the splendor of feeling all ten inches stroking past her pussy lips because of that darn knot. But she tried to fill that loss with the feeling of the huge invading member. Also, now that Bruiser was no longer on her back, and weighing her down, she could now make use of her hands at her clit and tits.

She closed her eyes as she continued to fuck herself back against Bruiser's butt. She reached beneath her and began playing with her clit. Because of all the excitement of the night, she reached orgasm very rapidly.

Her eyes popped open as she was startled from the alarm clock going off. Bruiser had been at her for the whole night. She looked over to where her husband was sleeping to see him looking back down at her smiling, and stroking a beautiful hard-on.

She returned his smile and invited him down on the floor to join them. He hopped out of bed fully rejuvenated from the previous night. He positioned himself at Bo's head and proceeded to fuck her mouth as he would have her pussy. But since that position was already filled...

Bo loved this whole situation. She had the best of both worlds. Her pussy was filled with the thickest cock that any woman would want, and she was sucking her loving husband. And the best thing of all, was that her husband didn't seem to mind her deviant behavior in the least. If anything, it got him more aroused than anything she had done in the past.

It took a few tries, but eventually John found the proper pace that would best serve his young wife. He would fuck into her so as to drive her butt onto Bruiser's cock as he drove his own deep down her throat. He already knew how good she was at deepthroating.

The addition of her husband brought on yet another climax out of her sexually exhausted body. She had long since lost count of how many orgasms she had had since last night.

By some miracle, her husband managed to hold off for much longer than he ever had before. This pleased her immensely. She loved it when a lover manages to hold off as long as possible. Then her mind wandered back to the dogs she had fucked in the past twenty-four hours. All of them had tremendous staying power.

Her best estimate was that none shot a load in less than twenty minutes, if not longer.

This simple statistic convinced her that this wasn't going to be the last time between the dogs and herself.

She returned her attention to fucking and sucking the two cocks impaling her. On the out-stroke, she would swirl her tongue around her husbands cockhead, then swallow it back down her throat.

John could feel his jism building in his balls. He knew that he couldn't hold out much longer. He grabbed is wife's head and buried his cock to the hilt and blew his load.

Bo had to fight her way to his cock head. She wanted to taste that succulent juice before swallowing. John relented and allowed his wife to grasp his cockhead by her lips so that his cum would fill her mouth, before she proceeded to swallowing it.

Almost at that same moment, Bruiser began shooting his second load in his mistress' womb. With her pussy still filled from his first ejaculation, this added fluid immediately began squirting past her plugged cuntlips and flowing in a steady stream down her inner thighs.

Bo gasped as she continued to suck on John's cock. She was hit by another orgasm and almost collapsed from exhaustion. John had to grasp her shoulders to keep her steady.

When he and Bo felt that he was done, he pulled out his cock from her still sucking mouth. It slurped out loudly as Bo reluctantly allowed it to escape her lips.

John fell on his ass in complete satisfaction. He looked over at Bo and Bruiser and smiled as he saw how ridiculous they looked, butt-to-butt.

When the huge St-Bernard finally finished cumming, Bo tried to pull away only to discover that they were still tied together. She looked over at her husband pleadingly.

"John, you've got to help me here," she begged. "We've been tied for over an hour. And as good as the sex was, I don't think that I can take much more of this."

"Aw c'mon babe," John teased her. "You've never turned down a cock in your life. Now you're telling me that you've met your match with a dog."

"You shithead," she played along. "Haven't you ever heard that too much of a good thing isn't necessarily good."

"Are you sure you don't want me to get you another one of the dogs?" He asked playfully.

"God, no," she stared at him. "At least not for today." She smiled coyly at him.

Deciding that the fun had lasted long enough, John crawled over to the stuck couple and examined the problem more closely. He could see the problem. The dog's unusual knot was almost the size of a softball and showed no sign of reducing its size.

Tentatively, he tried pulling them apart. This brought painful objections from both his wife and the dog, who snapped at him. He pulled away and tried to think of a solution.

He recalled seeing dogs tied together when he was a young boy. His father would throw a bucket of cold water on them to break them apart.

'I guess if cold water can work on a guy,' he thought to himself. 'It should work on any cock.'

Bo watched frustratingly as John disappeared out of the room towards the bathroom. He returned soon after with a bucket. Before she could shout out any objection he poured the content of cold water over the two locked lovers.

"John! You shit!" Bo yelled out. "Wha... what do you think you're doing?"

"Trying to pry you two apart," he answered back. "What do you think."

"By drowning me," she sputtered back at him.

"What else do you want me to do?" John yelled at her. "Call the paramedics so that it'll hit the papers in time for your morning coffee."

She was about to yell back at him when she felt a change. She could feel Bruiser's knot shrinking a bit. Still not enough to pull away, but definitely shrinking.

"I... I'm sorry john," she settled down. "You just caught me by surprise. But I think you might be on the right track though."

"What do you mean, hon?" He asked her.

"I... I think that his cock is finally shrinking a bit," she explained. "But I think that he might need another dunking."

John went back to the bathroom and returned with another bucket full of cold water.

"Dunk the dog this time, will you?" Bo instructed him.

John did as she asked and emptied the second bucket on Bruiser. John observed the knot had definitely shrunk somewhat. Its edges were now beginning to pull out of his wife's cunt. He reached down and pulled on Bruiser's cock stem.

This time it wasn't as painful to the inter-specie couple. As soon as the knot popped out of her a flood of dog semen poured out of her overflowing pussy. He couldn't believe the amount of cum was stuck in his wife.

Bo could actually hear the cum pouring out of her. She was orgasming at the release of pressure from her bloated womb. It felt like a cleansing enema, but an enema of her vagina, rather than her rectum.

After cleaning herself up in the shower, Bo joined John on the patio for a big breakfast. She needed to rebuild her strength after the wild fucking she had endured through the night.

"I told the staff about the water mess in our room," he was telling her. "Told them that we got silly and had a water fight with buckets. I think they'll buy that."

Bo only smiled back at his resourcefulness in the circumstances and took another bite from her plate.

"If you want to keep doing things like that," he went on. "We'll have to be more careful, hon."

"Uh-uh," Bo mumbled.

John reached under the table and squeezed her thigh. Bo reciprocated by trapping his hand between her warm legs, while he slid it closer to her cunt. After all that she had gone through in the last 24 hours she wasn't in the mood for more sexplay so soon. Which must be a first for her.

"Oh, by the way," he broke the talk. "I've finished the first draft for your next project."

He slid the screenplay of 'Bolero' across the table to her. Bo picked it up and flipped through the pages. What little she saw, she liked. She could see John's handiwork about her sexual pleasures written into the storyline.

By the end of the day she had read through the whole draft.

"So," John asked. "What do you think?"

"I like it baby," she said. "But I have a few suggestions."

"Like what?" He asked.

She hesitated before saying what she was fantasizing about. But her recent discovery of doggy sex opened her eyes to new possibilities.

"Well," she flipped the script to a particular page. "Like here. You have me riding bareback on this black stallion. I think it would be much more erotic if I did that in the buff."

"I don't know babe," he paused. "That might be pushing it with the censors."

"Why?" She quizzed. "It's not like I'll be fucking the stud."

John smiled at the image that was brought to his mind.

"I know that," he explained. "But it might be too suggestive."

Bo gave that famous innocently naïve smile of hers and convinced him too make it happen.

They filmed the movie with all the erotic suggestions that she had made to him. Though the movie wasn't a great box office success, they were nonetheless pleased that they had done it as it was.

Bo hadn't counted on getting so aroused by that nude bareback scene though. The memory of it just wouldn't leave her waking thoughts. She wouldn't be satisfied until she tried it again, here on the ranch, in the privacy of their home.

For the first few weeks she began taking out her steeds bareback until she was confident enough to take the next step. She knew that she still had to maintain a certain level of propriety. What with all the staff that the ranch had.

The day finally came when most of the staff had the day off. There wouldn't be a better time to try this than today. She headed for the stables, wearing her regular riding clothes, and placed the bridle on Geronimo. He was a beautiful white palomino stallion that John had given her as a wedding present.

Leading him out of the stables she jumped on his bareback and headed for the woods nearby.

As soon as she entered the confines of the forest she halted her horse and looked around. Seeing that they could no longer be seen from the ranch, she dismounted and began removing all of her clothing.

The shirt came off first. And since she never bothered wearing a bra, her breast didn't need one. Next came her riding boots and socks. And finally she peeled off her tight fitting riding pants under which she was pantiless. There she stood, in her full splendor. The body that have caused many a hard-on to make appearances in men's crotches and wet pussies in women's.

She peered down at her naked body and smiled pleasingly at herself. She ran her fingers through that blonde bush of hers, sliding them up to her breasts which she gave a sensuous squeeze.

She took another look around and saw one of the dogs approaching her location. It was Bud, one of their German Shepherd guard dogs. And one of her first bestial lovers. She smiled inwardly. She wouldn't mind his company. He might even be useful by the time they reached the lake.

She tucked her clothing away next to the tree and walked over to Geronimo. With gymnastic skill she jumped on his bareback and rode him down the path towards the lake.

Her naked pussy was rubbing against the rough hair of her steed. The bristles were rubbing her just as it had during her filming of 'Bolero.' It made constant contact with her clit and gave her an orgasm before she was halfway to the lake.

"its just as I remembered during filming," she said aloud.

Yes, she had had orgasms during filming this particular scene, multiple orgasms in fact. Nobody was suspicious about it then. She had insisted in wiping down the black stallion after each take. The handlers didn't mind, they would get paid nonetheless.

Bo had been concerned that if anybody else would have done it, they would have seen her cum streaking its hairy back. That's when her thoughts began drifting towards her own horses back here at the ranch.

She finally reached the lakeshore, but not before cumming two more times. She slid off Geronimo's back quite pleased with the experience. Her nipples had stiffened from her sexual arousal so she tweaked them playfully.

She dropped the bridle to the ground and walked sensually towards the water. She would need the cool refreshing waters to settle her nerves. She knew that Geronimo wouldn't wander, he was a good horse.

Bud had followed his mistress and could smell her sex in the air. This was a smell that was quite familiar to him now. He bolted out of the bush and startled Bo momentarily. Realizing that it was only Bud, she smiled at him and resumed heading for the lake. Unfortunately, Bud had other plans.

He reached her while she was only a few feet away from the huge horse.

Bo stopped suddenly when Bud stuck his cold snout in her crotch and began licking fervently at her wet cunt. She smiled and relaxed as he continued this task. Within minutes her breathing was deep and heavy from arousal. She just had to lie down so that Bud could really service her properly.

She dropped to her knees and then to her back, spreading her legs apart to give the dog better access to her pussy and clit.

Bud saw his mistress' compliance to his needs and burrowed deeper into her gaping pussy. He tongue delving deeply inside of her.

Bo was helping things along by playing with her breast as her mind soared in ecstasy. She had to admit it to herself. This wasn't just a fad of the moment. She was hooked on doggy sex and she wanted it everyday from now on.

When she felt herself ready for a fuck, she turned over and got up on her hands and knees and called out to the dog.

"C'mere Bud," she called as she slapped her buttock. "Give Bo what she needs."

From their previous experience, Bud knew what was expected this time and mounted the gorgeous blonde moviestar. He started humping immediately, even though he hadn't located her hole with his cock yet. Bo had to reach between her parted legs with her hand in order to guide him into her.

But once the dog's cockhead found its mark, Bud drove his shaft to the hilt which caused Bo to gasp in pleasure. She joined in the fuck effort and began fucking her butt back into Bud's loin. She wanted to feel that knot in her pussy again and she wanted to do everything possible to accomplish this in record time.

She was enjoying the fuck so much that she hadn't been paying attention to her surroundings. If she had she would have noticed that Geronimo had picked up the distinct smell of sex in the air. Or that he was slowly approaching the copulating couple.

While in the through of sexual ecstasy, Bo had her head down facing the ground and grunting with each fuck thrust that Bud was giving her.

It wasn't until she noticed the shadow on the ground that she looked up again. There, right next to her, stood Geronimo. But that wasn't what caught her eye. What did catch her attention was the cock that was sticking out of his underside.

She was shocked to see the size of it. It must be at least two feet long and as thick as her arm. The sight of it was surreal to her. No more than the fact that she might be responsible for arousing such a monstrous looking cock. But what was shocking her even more was her desire to touch the stallion's cock.

With Bud in tow, she crawled closer to Geronimo's hindquarters. When she was within reach she lifted her right hand and touched the cock with her fingers. She pulled it back almost as fast.

The heat that was generated from the horse's cock felt almost scalding in comparison to her husband's or the dogs for that matter.

She got her courage back and reached up to grasp Geronimo's cock again. All the while Bud never let up on his fucking. The dog seemed oblivious to the new participant in this bestiality scenario.

Bo stroked her hand along the immense length of horse cock. She was amazed how sturdy he was along its full length. From past experience with human partners, the longer the cock, the harder it was for them to maintain rigidity along the length. It took too much blood for them to hold their stiffness.

Bud finally got his knot inside her pussy, which brought Bo's attention back to the cock fucking madly in her pussy.

'How could I have forgotten about Bud,' she thought to herself.

She returned to humping herself on the German Shepherd while never releasing Geronimo's mighty shaft. She found it very difficult to accept as yet how turned on she was becoming with her animals.

Being so close to that equine penis, even her human nose could pick up the distinct smell of sex emanating from it. With no self control left to her, Bo pulled on that giant shaft above her. She was trying to lower it to her kneeling position. She wanted to get a closer look at it.

The horse's shaft was so stiff, it felt like trying to bend a metal rod, rather than one of flesh. But slowly, inexorably, the giant cock was bending to her will. With a bit more effort Bo Derek finally managed to get the cockhead down in front of her face.

She was fascinated at its strange shape. The flatness of the head. How thick the veins were, running along its sides. Even the pisshole was so different from what she would expect of a cock, any cock. The pisshole looked like a straw sticking out of Geronimo's penis.

'The easier to drink out of,' she thought amusingly. 'I guess.'

As soon as the thought entered her mind, Bo began wondering how a horse would taste differently from a man, or a dog. She didn't have to think about it for too long, she was long past considering about the taboo of what she was contemplating. She has been since the previous days introduction with the dogs.

With Bud still fucking blissfully away at her cunt, Bo moved closer to her stallion and began licking the length of its cock. Geronimo snorted loudly as he felt the human's tongue sliding along his penis.

Bo loved the texture of the horse cock. She knew definitely now that she wanted to suck on it as quickly as possible. With that in mind she began running her tongue towards the cockhead and licked around that flat tip. Squashing her tongue on it and licking its entire surface.

With one hand holding onto Geronimo's cock, Bo found that she didn't have to support Bud and herself from the ground with her other arm. The sturdiness of the equine cock was sufficient to accomplish this. This allowed her to start using her now free hand to other pleasures. Such as rubbing her clit or tweaking her stiff and sensitive nipples.

This unlikely threesome continued in this unusual gangbang for a good fifteen minutes before Bo felt dog cum being shot into her cunt. By this time she had miraculously stuffed her horse's cockhead past her lips and was sucking on it feverishly.

With her hand on Geronimo's shaft stroking along its length trying to make him cum as well. She wanted to taste horse semen, at least once before deciding how far she should go.

Bud remained tied to Bo after having shot his load, as was expected. And Bo remained vigilantly attached to Geronimo's cock, sucking hard and stroking just as desperately.

The one thing that she hadn't been counting on is that Geronimo would also act on instinct as his hindquarters unexpectedly humped forward. Forcing another few inches into her mouth. Bo was willing to take in the cockhead, but to have even a few inches stuffed past her lips was beyond reason. Her jaw ached at this sudden mass in her mouth. She tried to keep her teeth away from the horse's penis. A feat that seemed almost impossible considering its girth.