She gets all geared up

MuffinButt sucked on the plug for a while, really savoring it. Once the trainer thought it was wet enough he approached her behind and started to press the metal butt plug into her ass. She quickly realized that her saliva was not nearly as effective as lube but...somehow she didn't mind as much. It must have been the constant arousal that took her focus away from the butt plug but she felt good as it popped into place. The fur of the tail brushed against her bare ass, feeling both foreign and kind of nice.

The next was her gag, a large ring attached to two straps. MuffinButt didn't even fight as it was roughly shoved into her mouth and locked into place. After all, all she had been doing was moaning and panting, so the gag did not change much. As she was being railed more she found herself instinctually sticking her tongue out in ecstasy, drool dripping out of her mouth and onto the floor. She started to realize what the point of the ring gag was; she was naturally panting like a dog.

She couldn't see the next part of her attire yet, as one of the trainers were heating up a thin metal piercing rod. The next part required timing on the trainers but was something they were well practiced in. The man behind her gripped her leash and pulled, arching her back as much as it could. He let out a simple command, a single word.

"Cum."

MuffinButt instantly let out a huge moan of pleasure as her body started to shake. She had never felt anything like this before, the hours of edging and humiliation building her up to this climax. As the first wave of the orgasm hit her one of the trainers grabbed her right breast and quickly slid the piercing rod through her nipple. The pain overtook MuffinButt for a moment before it mixed with the pleasure to form...something intense. The trainer quickly slipped a large, heavy metal ring through the new hole before moving onto the next nipple. MuffinButt was ready for this one...well, more like eagerly anticipating it. She rolled her eyes back and let out another huge moan of pleasure as her left nipple was pierced. It felt like her orgasm produced a second orgasm as her entire body started to spasm. It was then that MuffinButt did something she had never done before.

Her cunt erupted like a geyser, spraying her juices all over. The trainer fucking her was soaked. Puddles formed everywhere, some even 6 feet away. And it lasted for a while, maybe a good fifteen seconds. MuffinButt had never squirted before, much less like that. It was very clear to her that, despite her pride, she relished all of this. It just felt....right.

It took her a while to come down as she had multiple, long orgasms, but finally she slumped down in exhaustion. She barely looked up when they brought out the last part of her new puppy gear.

"I hope you enjoyed cumming your little, puppy brains out MuffinButt, because it will be a while before you get to do that again," a trainer said as he showed off a metal chastity belt. The puppy didn't have the energy to protest or fight as he slipped it around her waist. "You stupid puppies are always so wet and in heat that if we don't lock you up, you'll hump everything in sight," he explained as he locked the belt. "Plus it prevents you from removing your pretty little tail. Don't worry though, if you are a good girl you'll get unlocked."

He freed her from the shackles and pulled on her leash, indicating for her to crawl after him. Despite being exhausted she **** herself to increase her pace. As she felt more juices leaking out of her cunt and onto her new belt, all MuffinButt could think is I need to be a good girl.