Keith was lying on the table in what appeared to him to be a veterinary clinic at the academy. He had been fitted into a new—and much smaller—chastity cage and was still suffering the effects of Emily stress testing it by displaying her boobs to him. As he processed the throbbing pain, he realised that Madame Isabella had entered the room carrying her stout leather tawse. The sight of that weapon had the effect of killing his arousal stone dead, instantly removing his discomfort.

Madame Isabella wasted no time on pleasantries. “Turn over, Keith, get on your elbows and knees and get your bum in the air.”

Nervously, Keith did as he was instructed, while Emily adjusted the height and the angle of the table so that it was positioned exactly where it needed to be. He had a good idea what was coming, and he was terrified.

“Your mistress has been trying to teach you a new trick, but you've defied her, so here you are, so we can train you, Keith,” explained Madame Isabella, coolly.

His face was now contorted in horror, as she continued, “As last time, we can do this the easy way or the hard way. One bark for easy and two for hard.”

“Woof!” he replied. Madame Isabella smiled, something she rarely did in front of pets. “I thought you'd want that, but let it be understood that if you play up you'll be punished.”

Madame Isabella walked around the table so that she was facing Keith. “You remember this, don't you?” she asked, brandishing the tawse in his face. “It hurts!” she added, unnecessarily. Keith had very clear recollections of being struck with it and, yes, it did hurt.

“Woof,” he weakly replied.

“Let me give you a reminder,” Madame Isabella remarked before moving out of his sight. The next thing he experienced was intense agony as the leather strap was smashed down on his buttocks. “You do remember, don't you, Keith?”

“Woof!” he croaked.

“Well, let's hope we don't have to resort to the tawse, then, eh?”

Suddenly, Keith became aware that Emily was now sporting a strap-on dildo, which was held in place by a harness on top of her jeans. He felt his mouth go dry because, had there been any doubt what his training was to involve, that doubt was now removed. The dildo was massive, both long and wide, and looked realistic, with protruding throbbing veins moulded along its length. It was far larger than the one Mrs Bradshaw had unsuccessfully tried to get him to take back home.

Had he been allowed to use English, Keith might have tried to present some persuasive argument, maybe to seek a compromise, such as a shorter and narrower dildo, but he was restricted to the canine equivalents of “yes” and “no,” neither of which were going to help him.

“Why are you so worried, Keith?” asked Emily, in a sympathetic tone, while sounding puzzled. “You wear a tail all the time. And you have prostate massages. This is not much different, is it?”

What?! It was completely different as far as Keith was concerned. His tail was attached to just a short butt plug, and his massages were done with a thin wand, yet this dildo was enormous and, what's more, he knew it would be pumping backwards and forwards like a piston in a steam engine. His mouth was dry, and he was speechless, so he tried shaking his head, which brought disdainful looks from both women.

“The tawse will teach him, Emily! Stand back!!”

“No, Ma'am, please!” pleaded Emily. “He's just scared. Can we try another way, see if we can't encourage him, Ma'am?”

Madame Isabella rolled her eyes and gave a sigh of annoyance. “I find that the tawse provides ample encouragement, Emily. But I admit you do have a bond with Keith.” She stepped to one side and beckoned Emily over to a corner.

“So, what's your idea, then?” she asked Emily.

Emily replied in a barely audible whisper. “Why not... Charlotte... learnt trick... show...”

“Hmmm... I suppose it might work. If it doesn't, I'll apply the strap.”

Keith saw Emily leave the room. Several minutes later, she arrived back with Charlotte, holding her leash. Charlotte, of course, was completely naked, save for her paws, tail, collar, and chastity belt—all locked in place.

“Charlotte has learnt this trick, Keith, so she will demonstrate to you that it's nothing to be afraid of,” Emily explained, as she unclipped Charlotte's leash and then unlocked and removed her tail and chastity belt.

“Bend over, Charlotte,” instructed Emily, placing a tall barstool in Keith's line of vision. Charlotte did just that, leaning over the stool, presenting her bum in the ideal position to be penetrated. Intent on watching this beautiful human poodle, Keith became aware that his penis was again swelling, and he was soon in considerable distress. Yet, despite the increasing pain he was feeling, nothing would stop him staring at Charlotte, as she was bent over the stool, her cute breasts dangling and wobbling enticingly in front of him.

Emily applied lubrication to the strap-on and Keith stared, mesmerised, as she lined the phallus up with Charlotte's anus. Then, effortlessly, the invader slid into Charlotte's rectum, causing Charlotte to give a wiggle and a moan of pleasure.

“See, Keithy,” Emily gently explained, “It doesn't hurt, and Charlotte likes it.”

Emily began pushing the dildo back and forth, and Keith could see that Charlotte was gaining enjoyment from it, even more so when Emily lent forward and began fingering Charlotte's labia and clitoris. Soon, Charlotte was wriggling and squirming, and emitting sounds that were distinctly un-canine like. Keith could tell Charlotte was cherishing the experience. Perhaps it wouldn't be so bad after all?

“Stop!” Madame Isabella suddenly commanded. “She's not allowed to be rewarded with a climax, so withdraw, Emily.” Emily extracted the phallus and, as she did so, Charlotte gave a final sigh of pleasure followed by a frustrated groan.

“Lock her belt and tail back on, Emily. Then, Charlotte, go into the corner and squat!” instructed Madame Isabella. Despite her obvious disappointment at not being allowed to climax, Charlotte obediently allowed Emily to lock her up again, before taking herself off to the corner. She wanted nothing more than to masturbate, to finish the job off, but the belt and her paws prevented that.

“Keith—if a girl dog can do it, so can a boy dog,” Emily patiently explained. As she said that, she removed the dildo from its harness and dropped it into a sink to be washed. Then, she searched through a cupboard for a replacement. “Oh... we only seem to have larger ones, Ma'am,” she revealed, pulling out what looked to Keith to be a monster.

Keith gulped and broke into a cold sweat, and the painful erection he had developed watching Charlotte being impaled instantly evaporated. He now wished he'd not made so much of a fuss in rejecting the dildo that Charlotte had just taken.

Emily attached the new dildo to her harness. “I'm putting on loads of lube,” she explained, hoping to reassure him. “You just have to relax, Keith!”

Relax?! He felt the end of the dildo pressing again his anus, but no way was he going to let that huge intruder enter him. He tightened his sphincter and pushed back, forcefully.

“Relax, I said!” coached Emily, seemingly surprised he was putting up so much of a fight. “You'll love it, if you relax.”

“And if you keep playing up, you'll feel the tawse,” hissed Madame Isabella.

Keith definitely didn't want to be struck again, and he guessed that whether or not he chose to relax, this foreign object would be entering his rectum. Yet still he couldn't bring himself to allow it inside.

“May I try wiggling his cage and tickling his balls to distract him, Ma'am?” asked Emily.

Madame Isabella nodded her approval, adding, “And don't be afraid to give his balls a very hard squeeze if need be.”

So, Emily reached forward with her hand and started playing with him. Almost instantly, his penis, which had shrivelled up in fear of the strap-on, woke up, only to be reminded again there was absolutely no room for expansion.

“Aaargh!” he cried.

“Dogs do not make that silly noise, Keith!” screamed Madame Isabella. “Unless they are asking to be punished,” she yelled, her face so close to his that he felt her spittle splattering his cheeks.

Keith bit his lips as his dick fought its battle with the cage. But at least this was taking his mind off Emily's attempt to get past his sphincter. Emily gave his balls a little squeeze and, while he was distracted by even more pain, she sneaked the strap-on inside him.

It took Keith a few seconds to realise that Emily had succeeded. Somehow, the end of the dildo now seemed to be several feet up his rectum.

He felt himself tense up, yet, to his surprise, the sensation was far more pleasant than he was expecting. The artificial phallus was pushing against his prostate and rewarding him with powerful sensations. The wide object was proving to be far more satisfying than the thin vibrating wand that Mrs Bradshaw used to drain him during a prostate massage.

His brain was in conflict and was trying to balance the pain from his restrained penis with the delightful pleasure of the strap-on stimulating his prostate. The latter sensation was winning.

Skillfully, Emily pounded him, working the strap-on back and forwards, while continuing to tease his genitals. Keith was enjoying the occasion, even wondering why he had resisted Mrs Bradshaw's attempts with so much vigour. He was also aware of a little seminal fluid dribbling out of his locked penis onto the tabletop.

Of course, he never climaxed, but it was still a satisfying event, and he felt disappointment as Emily withdrew.

“You did it, Keith!” she effused, affectionately. “You're a very good doggy. Well done, Keithy!”

Emily looked at Madame Isabella, expecting her to say something, but she was staring at the tabletop beneath Keith's dick. “Hmmm?” she pondered. “There's not much semen here. Barely a teaspoon full. Why would that be, Emily?”

Emily felt her face flush. “Er... I've no idea, Ma'am. Erm... er... perhaps Mrs Bradshaw had drained him very recently. Yes! That's it—that explains it, Ma'am! Phew!”

“It would explain it, if it wasn't that the paperwork you completed yesterday said that it was four weeks since he last had relief. There should be gallons of his muck. What do you say to that, Emily?”

“Er... hmm... well—”

“Keith, has Miss Emily masturbated you?” interrupted Madame Isabella, angrily.

What was he to reply? Keith hesitated for several seconds and then defiantly barked, “Woof! Woof!”

“Well, you're loyal, Keith, I'll give you that, but you're also lying.” Turning to Emily, she asked, “Did you give him a hand job? I want the truth.”

“Er... hmm... yes... Ma'am, I'm sorry. I shouldn't have done it.”

“No, you damn well shouldn't have, you silly girl! Which hand did you use?”

“My right hand, Ma'am.”

“Stand where Keith can see and then hold that hand out, palm up!” She did, and Madame Isabella delivered three sharp strokes of the tawse, bringing tears to Emily's eyes. “Never break the rules again, Emily, it's very unprofessional,” Madame Isabella frostily told her.

She then took a few steps and administered three equally hard strokes of the strap to Keith's buttocks. “That's for lying, Keith.”

“Okay, Emily, lock his tail back on and return him and Charlotte to their crates. I'll phone Mrs Bradshaw to say that he has learnt a new trick and that he's ready to be returned. I won't sully the reputation of the academy by disclosing what you did, Emily.” She glared at her young assistant, causing her to redden.

oooOOooo

Emily took Keith back to the basement. She had a sore hand and he had a sore bum.

“Thank you for trying to protect me, Keith,” she whispered, hoping her words would not be picked up by the microphones. “You're a proper sweetie.”

Keith wanted to tell her that he thought he was in love with her, but he knew it would be unrequited love, and he was sure that she treated all pets that came to the academy with equal kindness and compassion. Instead, he looked up at her with a sad expression.

She patted his head, remarking with a smile, “You're a big softie, Keith. What a pity I'm a girl and you're a dog. It could have been so different. Now get back into your crate until it's time to go back to your owners.”

oooOOooo

A few hours later, Keith was home and was warmly welcomed by Mr and Mrs Bradshaw. Emily said her goodbyes, stroked him under his chin, and then, as she turned to go, gave him a flirtatious wink, unseen by his owners.

Keith immediately felt a convulsion of pain emanating from his cage. He and Mr Bradshaw watched, entranced, as Emily slowly strolled back to her van, her shapely bottom oscillating seductively.

As he gawked at her, Keith found himself speculating on what other tricks he could refuse to learn because he couldn't bear the idea of never seeing Emily again. Then he remembered the formidable Madame Isabelle, so he wondered if it might be better transitioning back to being a human and trying to date Emily. Mr Bradshaw, on the other hand, not knowing anything of the dark side of Madame Isabella, was weighing up whether he should become a rebellious dog in need of training at the academy.

Mrs Bradshaw stared at the spellbound pair, and her scornful glare said that she knew what was going through their fatuous minds. She was unimpressed and shook her head in contempt. “Pathetic, both of them,” she muttered, to no one in particular.