Debbie stared at the dog as though she expected him to say something, but he just lay there yawning. He had obviously slept in the room with her all night. Slowly, she stood and walked carefully past the dog into the bathroom. She had started to close the door, when she heard the dog get up and approach her. She froze with her hand on the door. Then she slowly opened it again, all the way. The dog retreated to his spot by the bedroom door. She stood with her hand on the bathroom door, staring at the dog.

"This isn't over," she thought. Her heart raced and her stomach lurched as the true terror of the situation came home to her. Her fingers went white where she gripped the door. She forced herself to let go.

"He's much stronger then me. He could kill me any time he chooses. He's in control now. I'd better do what he wants." She propped the door open so she wouldn't be out of Gus' sight.

"OK," she said to herself as she ran the water for her bath. "Ground-rules. No closed doors."

After she bathed, she felt much better. In fact, she felt pretty good. She knew it was the afterglow from last night, but she allowed herself to smile anyway. She walked out of the bathroom with her hair wrapped in a towel and another around her torso. She pulled panties and a bra out of her bureau drawer, pulled the towel from her body, and sat on the bed to get dressed. She had just got her feet into the panties when she heard the dog growl. Again she froze and looked at the dog. He did not seem to be about to attack. He was just giving her a warning.

"Aha," she said, understanding. "No panties. Well, how about a bra?"

She picked up the bra and held it up to her breasts. There was no response from the dog. She put the bra aside.

"Towel OK. Bra OK. Panties not. Gotcha."

She stood up and went to the closet. She had intended to put on a fashion show for the dog to try to learn the new limits of her wardrobe, but she froze with her hand on the door when comprehension suddenly dawned. The dog would not let her wear anything that got between him and her pussy. She felt her stomach clench and sudden warmth start to rise from her crotch as she realized that the dog intended to have sex with her whenever he wanted. Her eyes went wide at the thought. She pondered her change in status and how her life had changed in the last several hours.

"I'm his bitch," she thought, "I'm the dog's bitch."

The horrendous idea of being turned into a sex-slave for a dog both repelled and fascinated her at the same time. She could not put it out of her mind. Every time she thought, "dog's bitch" she felt her pussy grow warm and a small jolt of pleasure run up her spine.

She pulled a short terry robe from the closet and shrugged into it, tying the wide belt in front in a half-knot so she could take it off again quickly in case the dog objected. Gus seemed fine with it, though. She walked out of the bedroom and down the hall. The dog padded along behind her. In the kitchen, she washed out his bowls and poured him some fresh water and food. While he ate, she made coffee.

Standing against the counter while she drank her coffee, Debbie looked at the dog. He sat across from her, next to the breakfast table, watching her. To all outward appearances, he was an ordinary dog � a household pet like any other. Debbie knew better. She wondered what he was thinking. She wondered what he wanted.

As if in answer to her unspoken question, Gus stood up and walked over to Debbie. He put his nose right at the level of her crotch and sniffed. Debbie looked down at the dog. He stared back up at her, waiting for her to do something. For a moment, she did not understand.

"This is a test," she thought. "He wants to see how I will react. He wants... what?" Suddenly she understood what the dog wanted. She took a deep breath. The hand with the cup in it began to shake. She sat her coffee cup down on the kitchen counter. Mechanically, she loosened the belt, opened her robe all the way and tucked it behind her, exposing her naked body completely to the dog. Her belly twitched under his gaze. Her legs felt weak. She took a tight hold of the edge of the counter behind her, to support herself and so she would not be tempted to raise her hands, something she was sure the dog would interpret as resistance. She moved her feet apart, spreading her legs. Then she tilted her hips, pushing her pussy forward, toward the dog's nose. She clenched the muscles in her ass, bracing herself for whatever came next. She shivered in anticipation of what the dog would do to her. As she stood there, exhibiting her pussy to the dog, she tried to analyze her feelings. She realized that she was at a fever pitch of arousal, that her clit was so hard it was vibrating with her heartbeat. She also realized that she was not only prepared for whatever the dog wanted of her, she was eager to do it. She had gone from reluctantly surrendering to the dog's dominance to being his willing slave.

Gus stuck his nose between her legs and sniffed loudly at her exposed pussy. Debbie could feel his hot breath on her. He looked up at her over the tensed muscles of her belly, his brown eyes staring directly into hers. Then he slowly licked her between her legs with his long tongue, running it the length of her pussy and dragging it over her clit, making her quiver at his touch. Withdrawing his nose, the dog walked over to the back door and looked at her with an expectant gaze.

Debbie relaxed from her brace, opened the door and Gus bounded out. Leaving the door open, she went back to her coffee. As she sipped it, she looked down between her legs. There were small beads of the dog's saliva clinging to strands of her pubic hair. She closed her robe.

"He's training me," she thought. "That was a kiss; a reward for correct behavior." She felt a warm sense of satisfaction at having pleased her new master.

Later that day, Debbie had just finished cleaning up the kitchen after fixing herself lunch. She wore a tank-top, but had on a mini-skirt instead of her usual pair of running shorts. She was about to sit down to watch TV when Gus came over to her. As before he but his nose at her crotch and waited.

"Another test," she thought. Eager to demonstrate what she had learned, she pulled her skirt up onto her hips and assumed the brace position as before, hands behind her, gripping her ass cheeks, pushing her hips forward and offering her pussy for the dog's inspection. He put his nose up to her and sniffed; then he barked. Debbie felt a shock of excitement run through her. This time, she knew instantly what he wanted her to do. Her heart began pounding in her chest. She slid to her knees on the floor, pulled the skirt up around her slender waist, bent over the sofa, grabbed the seat-cushion, and spread her legs. Her nipples hardened against the upholstery. She felt her pussy begin to heat-up as her blood rushed into it, getting it ready for the assault she believed was to come.

Gus stood and looked at her, as though he were a drill-sergeant, inspecting a trainee. Under his stern gaze, Debbie quivered with anticipation. She felt her clit swell and harden, peeking out of its hood as though reconnoitering the area. Her labia separated and hung, swollen and pink, on either side of her vaginal opening. Her breathing became rapid. The tension was unbearable. Lubricant began to flow from her opening and drip from her labia. She wondered if her position was acceptable, or if there something else she needed to do. She cocked her hips back, pulling her ass as high as it would go. She spread her legs as far apart as she could, feeling her muscles tense under the strain.

Finally, Gus put his muzzle between her legs and licked her as he had before. Debbie climaxed instantly at his touch, shivering and quaking as her almost palpable sexual tension was released.

Finding her well�lubricated and ready, Gus mounted her. As his erection speared into her, she felt her climax explode to new heights. She came three more times during that session, each time better than the last.

Shortly after eight o'clock that night, Gus fucked her again, this time in her bedroom. Debbie climaxed so hard that she was totally spent. She went right to sleep, not even bothering to drain his cum out of her pussy.

The next day, Debbie abandoned her mini-skirt and wore just a crop-top t-shirt that barely covered her breasts. Gus fucked her three times that day. Each time wherever and whenever the mood struck him. The last time had been behind a bush while they were romping in the backyard. She had to support herself on all fours on the slick grass, gripping it with her fingers so she would not slide under Gus' powerful thrusts. When she came, she tried desperately not to moan or squeal, so they would not attract the attention of the neighbors. Debbie thought that was one of their best fucks because it seemed more natural to do it outdoors, but also because the possibility of getting caught added an additional thrill.

When the weekend came, Debbie became concerned. She needed to go to the supermarket to restock her pantry, but she was worried about Gus. The store did not allow dogs inside, unless they were guide-dogs for the blind. Before going out, Debbie got dressed for the first time that week. When she pulled her bra on, she made a face. She had become used to wearing little or nothing over the last several days and the confining garment felt very uncomfortable. She took it off and went back to her underwear drawer. She pulled out the lightest, thinnest bra she had and slipped it on. This one felt much better because the seamless cups were of a thin microfiber material that felt much better on her nipples. She looked at herself in the mirror. Her nipples stood out clearly through the sheer fabric. Her areolas were puffed up and very sensitive. She realized that they had been that way for days. She put on a thin cotton blouse that buttoned up the front and the longest skirt Gus would allow. The clothes still felt uncomfortable and she looked forward to getting back home so she could take them off again. She adjusted the skirt so it hung as low on her thighs as possible without falling off her hips.

"I'll have to be careful when I squat or bend over" she thought, "or someone will get a show."

Gus walked her out to the car and jumped in willingly when she opened the door. She drove to the store with him beside her on the passenger seat. When they arrived, he got out of the car with her and walked next to her across the parking lot. When they got to the pneumatic door, he looked through the glass and then lay down outside where he could see through the door.

Debbie sighed with relief and went in to do her shopping. When she came out, Gus was in the same spot, waiting for her. "I've earned some time off the leash," she thought, her chest swelling with pride, as they walked back to the car. "He trusts me not to run away."

Having finished her own grocery shopping and established herself as trustworthy to Gus, Debbie decided to visit the pet store a few doors down from the supermarket. As before, Gus accompanied her to the front door and waited outside.

As she wandered the aisles, trying to decide which kind of food Gus would like, a clerk came up to offer assistance. The girl was young, no more than 18, attractive except for what Debbie thought was an excessive amount of make-up, and was wearing a simulated-leather mini-skirt that barely came to mid-thigh. The thing that caught Debbie's eye was the collar she wore around her neck. It looked like leather, with brass rivets, and a D-ring next to the buckle from which dangled a small metal tag in the shape of a bone. It looked just like one of the dog-dollars hanging on display.

"Can I help you?" the clerk asked, smiling.

"I need some food for my dog," Debbie replied, "He's gone through most of a bag in the past week."

"Is he a large breed?"

"Yes, a Labrador. He weighs more than I do � and he eats more, too." Debbie laughed.

"Well, we have several kinds of dry food that are popular with large breeds. There is one here that I recommend." The girl led Debbie to a set of shelves in the back of the store that were piled high with large bags of food. She pointed to a brightly colored bag on the top shelf.

"This one is good for active dogs. It gives them a lot of energy � and stamina." The clerk watched Debbie's reaction closely, but Debbie didn't notice. She was looking at the bag, but the word 'stamina' kept echoing through her head. Then she smiled and said, "That sounds good. I'll try some of that."

The clerk nodded and smiled back. "Let me get a couple down for you. These things are heavy. I'll help you get them out to your car, too. Only take a sec." With that, she pulled a rolling ladder over and climbed up to the top. As she reached the top, Debbie looked up and was shocked to see the girl's bare ass under her skirt. "That's hardly proper business attire," Debbie thought, smiling to herself, "She might be able to get away with wearing thong underwear on the job, but not if she's going to be climbing ladders..." At this point the clerk picked up a bag and spread her feet further apart to steady herself on the ladder. When she did this, Debbie could see that the girl wasn't wearing a thong � she was wearing nothing at all. Debbie quickly averted her gaze, but her mind raced. The clerk wasn't the only one here whose pussy was clearly visible from below. The girl's punk necklace suddenly took on a new significance. Was it possible that Debbie wasn't alone in her new vocation as a dog's bitch?

The young clerk deposited the bags of food next to the register and asked, "Is there anything else you needed today?"

"Yes," Debbie said hesitantly, "Ah, your � necklace. Is that... ?" she trailed off.

The girl smiled and put her hand to her neck, rubbing the small brass tag between her fingers. "Yes, it's a dog-collar. We have a selection over here," she said, walking down an aisle to the display Debbie had seen earlier. "They come in a range of sizes and styles. Do you know what size you need?"

As Debbie wondered how to answer that, her hand stole unconsciously to her throat. Seeing this, the clerk smiled and said, "I think I can help you. Let me see." She took a measuring tape from her pocket and stepped close to Debbie. As she slipped the tape around Debbie's neck, she said, "Will you be wanting a tag with this? We can engrave anything you like on it. Mine has my name on it. See? It says 'Amy'."

As the girl measured Debbie's neck, her breasts brushed against Debbie's and Debbie felt the girl's hard nipples press against her. At the same time she realized that her own nipples were just as stiff. Debbie could feel Amy's breath on her as she leaned close to read the measurement. The girl stepped back so they were no longer touching, but close enough so that the slightest movement of either would put them in contact again. She pointed to a row of collars with one hand and put the other on Debbie's arm and gave her a friendly squeeze. "I think any of these will fit. Did you have a particular style in mind?"

"Yes," Debbie said, leaning toward the display and bringing her breast once more into contact with Amy's, "This looks like it."

Amy took the collar and placed it around Debbie's neck to check the fit. Again her breasts pressed against Debbie's, nipple to nipple. "This can be adjusted so it will ride low on your neck, like a necklace; or high, like a collar."

"High," Debbie said, looking the girl in the eyes as she tightened the leather strap around Debbie's neck, "And I'll want a tag, too." Debbie raised her arms to feel the collar and felt her nipples drag across Amy's.

The two stood pressed against each other, their flesh warming at their twin points of contact. Amy's lips parted and her breath became shallow. Debbie put her arms down and let her hands fall onto Amy's shoulders. Amy reached behind Debbie and pulled her so that they were pressed together from breast to thigh. They both felt their mutual heat rising, flames of arousal flickering higher as they held each other. Debbie was just starting to lean her face toward Amy's when the shop phone rang. Both stepped back from the clinch and tried to recapture their composure. Amy went to answer the phone.

While Amy took the call, Debbie took several deep breaths and tried to calm down. She had been on the verge of making out with a stranger, a girl, in a public place. She had become incredibly hot in only a few seconds! They both had. Amy had been just as aroused as she.

"Gus did this to me," she thought, "he conditioned me to instant arousal and to yield to sexual advances. And all the fucking I'm getting keeps me in a state of arousal all the time. The same thing must have happened to Amy. Wow! We're walking sex-bombs with very short fuses!"

Debbie experienced a sudden surge of pride, she felt like she had just discovered that she had a super-power. Instead of trying to calm down, Debbie pulled on both her nipples to try to keep them hard and to raise her arousal level to a high pitch. She pressed her thighs together to stimulate her clit. She decided to revel in her new sexuality, not suppress it. If her pussy juice ran down her leg, she would let it. She would wear the scent of her sex like perfume. If she were going to be a dog's bitch, she would be a dog's bitch in heat.

After Amy engraved the tag and affixed to the collar with a metal link, she asked, "Should I bag this, or will you wear it out""

"Bag it, please. I want it to be a surprise. And Amy...", Debbie leaned over the counter and kissed Amy softly on the lips, at the same time she reached out and gave Amy's breast a gentle squeeze, "... thank you!"

After the purchases were paid for, Amy helped Debbie carry the bags of food to the car. When they came out of the store, Gus fell into step with them.

"Is this your dog?" Amy asked, "He's gorgeous! And so big! I bet he's a lot of fun."

"Yes," Debbie said, sure there was no misunderstanding between them. "He's wonderful."

As Amy leaned over to put the heavy bags in the car trunk, Gus stuck his nose under the back of her skirt. She bent her legs just slightly more than was necessary to handle the bags and hesitated with her ass in the air long enough for Gus to get a good sniff of her pussy. A smile came to her face and she pressed her hands briefly to her breasts as though adjusting her blouse. Then she turned and knelt beside Gus. "Sorry, but I'm spoken for," she said as she stroked his coat and pressed against him. Rising, she smiled at Debbie, "I'm sure he'll like the food. I hope both of you come back soon." As she turned to go back to the store, she waved, "Bye now."

Back in the driver's seat, Debbie thought about her heightened sexuality and reaffirmed her decision to enjoy it rather than hide it. She unbuttoned her blouse and took off her bra. Then she buttoned the blouse back up, leaving the top two buttons undone. Looking down into her cleavage, she undid the third button as well. She pulled her collar open and pressed the material down so the blouse was open down to a point just above her nipples. She took a deep breath and watched the material become taut over her breasts. The outline of her nipples was clearly visible under the thin cloth. Another breath and she undid the fourth button. Now her blouse was open to below her breasts and her cleavage was completely exposed. Her breasts were now only covered on the sides and the tips; the rest was on open display. She opened the car door and stepped out. Gus watched her from the passenger seat. Debbie pulled her already short skirt up on her hips until the hemline was only an inch below her crotch. She could feel the breeze across her pussy-lips. Her vagina grew warm and she could feel her juices start to build.

"Cmon, Gus," she told the dog, "let's take a walk. I want to strut." The dog climbed out of the car and walked beside her as she crossed the parking lot to a short strip of stores next to the market. She had no plan in mind; until she saw that one of the stores was a comic-book shop, a favorite hang-out of teen and pre-teen boys. Smiling, she walked to the door. Gus knew the drill now, and waited for her outside.