May the Best Pet Win!

Rainbow's friends were all lined up ready to go, Rainbow Dash had all informed them of her desire to have one of them as a pet and that she decided a competition was the best way to determine which of them would become her pet. A common trait of the pet culture in Ponyville was the animal aspect, every pony who was a pet wore something that looked sexy and added a little extra kink factor to the whole owner and pet dynamic. Twilight was wearing an owl mask, Fluttershy was wearing bunny ears, Rarity was wearing cat ears, Applejack had decided to have her tail cut off completely so that Rainbow could see the dog tail butt plug she had in her ass and Pinkie Pie had cosmetic lenses in that gave her eyes a distinct reptilian appearance.

Rainbow stood in front of them all and said "So, you all think you've got what it takes to be my pet do you? Well, we'll just see about that! This competition isn't for the weak, you'd better be prepared to step up your game! There's only room on team Dash for one of you and my future pet needs to be able to take it to the extreme! These games will determine which one of you has the most important qualities I'm looking for in a pet, speed, agility, guts, style and last but not least, the three most important ones, hotness, attractiveness and sexiness!" Twilight raised her hoof, Rainbow deadpanned and said "What?"

Twilight said "Aren't those all the same thing?"

Rainbow smiled and said "You would think that Twilight and that's why you don't qualify to be my pet"

Twilight was shocked, she'd already lost before she had competed "Wha- are you... REALLY?!" Rainbow just nodded. Twilight was pissed off, but had to accept that she'd lost, she took of her mask, threw it to the ground and walked off.

"Alright then, speed! The first of you to come over here and kiss me will-" Rainbow was interrupted and her eyes went wide when she suddenly found one of her friends was already kissing her, the lizard eyes she saw staring back at her indicated that Pinkie was the one who had already won this particular event before she had even fully announced it. When Pinkie pulled away with a big grin on her face, Rainbow just said "Er... well, there you have it, that's speed alright!" All the others groaned in disappointment, but they all knew Pinkie was always going to win the speed event, she sometimes knew where ponies were going to be before they even got there.

"OK, agility! This one will prove to me which one of you is flexible enough to please yourself for my viewing pleasure, got it?" Every pony nodded, got on their backs and began to pleasure themselves in various ways to see if they were all up to the task of suitably impressing Rainbow, Rainbow herself went down the line to evaluate their efforts. Fluttershy was using one hoof to spread her ass cheeks to she could use her other hoof to tease her asshole "Sort of agile" Rainbow said, Pinkie was being more traditional and was simply just rubbing her pussy with one hoof, leaving Rainbow thoroughly unimpressed "Not agile" she said. Rarity, wanting to show off her more feline skills had lifted one of her hind legs to her mouth and was licking it, apparently she was into hoof play, Rainbow was that into hoof play but she would be the one in charge anyway and just said "Pretty agile" before moving on to... Twilight? Why had she come back? She was using magic to tease her pussy and asshole at the same time, Rainbow rolled her eyes and said "Could be more agile, but I've already said no".

Twilight protested "Can you at least let me compete? I might surprise you!"

Rainbow groaned and said "Ugh! Fine!" Then went to observe Applejack who... Wow! Rainbow had to question whether or not Applejack even had a spine with the move she was pulling off, she was almost fully curled up into a ball as she tongue fucked her own asshole. "Whoa, now that's agile!" Looks like Applejack had won that event, much to Twilight's chagrin, they all stopped their own self pleasure and got back on their hooves ready for the next event.

"Alright now, guts! Which of you has the guts to tell me when I'm using the wrong sex toy, huh?" This was going to be a challenge, the rules of being a pet was to never ever question the owner, let alone tell them what they were doing was wrong! The challenge for this would be that Rainbow would be inserting an anal sex toy into their pussies and the one who pointed it out would win. She went down the line of her friends from behind with all of them allowing Rainbow the best view and access to their holes as possible, Rainbow picked up the anal beads she had prepared for the competition and began pushing them into each of her friends wet and sloppy cunts. Each one of them made grunting noises, swore under their breath and a couple even tried to point out her mistake, but the only one who was brave to actually do it was, weirdly, Fluttershy. "Um... excuse me Rainbow, b-but I think those beads are more for... anal pleasure than... um... vaginal pleasure, that is to say that y-you're using them wrong".

Fluttershy was shaking and sweating all over as Rainbow gave her a look of annoyance, before the annoyance melted away into a look of approval as she said "Now that takes guts!"
The next event was style.