Erin was an ordinary arcanine, once.
That changed a few weeks ago, though.

Shi was always a fan of hir paws, going to great measures to share them with all the world, though until recently that meant nothing more than going barefoot whenever possible, and the occasional webcam show. People seemed more interested in the bulge in hir pants or the twin ones in hir shirt, though shi couldn't tell why; sure they were nice, but just LOOK at those paws.

Shi'd just found this EXCELLENT looking thaumic treatment that promised to enhance the softness of one's paws, and it got hir so excited that shi didn't even think about how odd it was none of hir friends could see the online listing, or that the sample pictures seemed to be of hir very own paws, not those of some model--though, shi told hirself, hir paws were as good as those of any model. Shi just ordered the kit and waited eagerly for it to get home.

Four-to-six business days later, shi got home from work to find a package on hir doorstep. A brief fuss with the box later, there it was: one tiny tube of what looked like sunscreen. Of course, Erin knew enough to know that loads of beauty creams looked like little more than sunscreen, until they started doing wonders for your paws. Shi took the little tube, made sure to completely ignore the instructions that came with it, and began rubbing the whole thing into hir paws. After all, the thing was only five pid, shi could just buy twenty more if shi turned out to be using this one wrong.

It was fast-acting, that much was for sure. Before shi even knew it, a second pair of legs exploded out behind hir, catapulting hir off the couch. Shi barely even had time to admire hir new paws, however, before ANOTHER taurso burst out of hir rear, this one with even larger paws. It seemed to pause there, though, giving hir a little time to admire hir new paws--which, of course, needed PLENTY of licking. It seemed hir front legs had become digitigrade, as well; good thing, too, because that meant larger paws! Hir pants had been thoroughly shredded, but shi didn't particularly care. I mean, come on, SIX PAWS. Not only that, but it seems hir second-best attribute was getting multiplied too; shi now had three complete packages of hefty balls and nice, thick cocks to complement hir paws.

Shi stood up and looked hirself over. Interestingly, this new shape didn't seem unnatural to hir, and shi knew how to control these new legs as if shi'd had them hir whole life. But, it's a rare arcanine can take just one taste of growth and then let it end there. This body was nice, but it was beginning to feel uncomfortably small. And with that brief thought, another taurso grew behind hir. And another, and another, each one just slightly larger than the last, slightly stronger than the last, slightly--oops. There goes the wall.

Shi didn't really care about the wall, though. Shi had all these paws, and had to share them with the world! Just travelling around wouldn't ever be nearly enough; shi needed to grow large enough to have some paws near every single person in the world! And, of course, shi did. The thoughts of growing larger caused hir to grow even faster, and soon shi couldn't even count the number of limbs shi had! No need to, though; the important part was that they were there, and each and every one of them had a wonderfully soft and increasingly-large paw on the end of it. No matter that hir growth was crushing buildings left and right, hir fluff provided plenty of cushioning to all the people, and surely no one would mind--hir body would be an excellent place to live!

It took barely a day for hir to cover the entire planet, but shi wasn't done growing yet! Shi decided that gravity wasn't worth considering and did away with it, allowing hir to continue expanding out without worrying about crushing anything. It didn't seem the least bit odd to hir that shi could do that; after all, of course shi was a god now. It was obvious that one of the several deities who shi knew were fans of hir paws had decided to raise hir to godhood; now to figure out just which one it was to give proper thanks!

But it seemed that would have to wait until later. Shi wasn't sure where to find them, and hir growth still didn't seem to be slowing down. Shi HOPED it didn't slow down, too! That would mean less paws, and less paws is the exact OPPOSITE of what shi wanted! No, shi'd keep growing, hm, maybe even speed up! With each new taurso came the slightest little increase in hir now-divine abilities, the smallest little boost to hir power. Shi'd long passed 'elemental', and 'force of nature' was a distant memory. Shi was pretty firmly in 'deity' class here, and growing. And growing, and growing! Shi'd soon covered every planet in hir original planetary system--leaving the star for now, since shi didn't want to bother trying to create hir own light just yet--so shi decided to branch out to other worlds somehow. After all, shi'd already shared hir paws with everyone in the world, why not share them with everyone in the universe?

Shi pondered how to get over to the other star systems on hir plane for a while, but then remembered that shi was a god now. Shi simply removed the space between hir and the nearest planets to expand onto, and began growing more! It wasn't too long, only a few more days, before shi'd covered every planet, asteroid, comet, and other small body in the universe! Trying to cover any more worlds at this point would be fairly difficult, anyway; hir rearmost paws were each roughly the size of a small planet, and shi had already run out of large ones! At this point, shi'd definitely passed even the realm of 'god'; shi WAS the universe, which had now become a new elemental plane, that of Erin's most favorite thing, paws. The gods of the local multiverse had unanimously agreed that Erin was now the elemental plane of paws, though there was still a bit of debate when Erin managed to find the plane from which they were observing.

"There's no precedent for it!" one of them was shouting. "It's always been one thing, one plane! Erin can be paws, but if you want there to be a plane of dicks, you'll have to pick somewhere else!"

"The rule is also that the elemental plane be the plane containing the most of its element," another replied. "Erin clearly has more fluff than any other plane within thousands of tann!"

The argument continued mostly in this manner for some time, before Erin decided to peek in and see what was going on. These must be some tiny gods! Or perhaps Erin's been growing all around, instead of just getting larger taurbodies added on the end. The sheer thought caused hir to have another burst of growth, knocking out part of the ceiling in the process.

"Hi guys! I heard you talking. Apparently I'm the elemental plane of paws now? Really, I have to agree with the guy over here. I'm just too wonderful in general to be simply the plane of paws. I could definitely be the plane of fluff, too! And balls, and dicks, too. Those are pretty nice! I know you guys want to keep it to one element per plane, but could you perhaps split them up in quarters? I'll just fill up three more planes and be right back, then all of me can be all four planes! I've got plenty of growing to do, I'll see you later!"

Erin left before any of the others could even react, closing hir entryway into that plane and immediately opening one onto an adjacent one. And, of course, promptly beginning to fill it too with arcanine paws! This plane was dark, and shi could barely tell what shi was doing half the time, so shi decided that nothing would need light to see anymore, neatly solving that problem AND removing the need for hir to leave hir original plane's stars untouched. And shi didn't leave them untouched, either; shi sat down a few taursos on each one and, as shi was a fire-type, began absorbing energy from them to fuel further growth.  This more than quadrupled hir speed, letting hir fill the entirety of this second plane in little over a day, though shi didn't notice--when that plane was full, instead of opening a gateway into the next one as shi'd meant to, shi managed to simply tear through its boundary and spill out into yet another plane of existence. "Oops, er, I can fix that! Probably. I'll try when I'm done growing!"

This plane took even less time to fill, barely ten hours passed before shi actually managed to open a gateway to the next one to prevent this one from bursting as well. And then that fourth plane was filled in just over three hours, and hir growth rate showed no signs of decreasing! Shi popped back into the gods' meeting hall to see how the declarations of elemental planeship were coming along--after all, can't be an elemental plane without the proper paperwork to prove it! Else any random guy off the street could claim to be the plane of paws, and then people would use that guy's plain paws instead of hir own glorious ones! Unfortunately, it seemed they were still fighting over the tiny details of things like "is it even allowed for a living being to be an elemental plane", so Erin decided to take matters into hir own paws, and simply made hirself be the elemental planes of paws, fluff, cocks, and balls. Skip all the bureaucracy!

Of course, while all this was going on, shi'd already filled up almost a dozen more planes.  Not only was shi getting more bodies added more often, each one was just a little bit bigger than the last, leading to each of hir individual paws being larger than a good-sized star on the more recent ones! With each new plane shi took over, shi removed its laws of physics to allow things to simply work however people feel like they should work, letting people live on hir paws quite easily without getting crushed or thrown around when shi took a step. Or, of course, live on whatever other part of hir they wanted to. It seemed hir dicks were pretty popular; not that shi was complaining!

But still, it seemed there weren't nearly enough people to give hir paws the attention they deserved... So, shi followed in the footsteps of countless gods before hir and manifested avatars. Countless arcataurs, the smallest a mere few hundred meters tall and no more than three or four taursos long, appeared all over hir body and hurried to give attention to all hir best parts, kneading at paws and stroking at shafts across countless universes. A few star-sized paws wiggled their toes cutely, their claws massive towers in which entire civilizations lived, their pads vast expanses of soft land on which the lesser deities made their homes. Just behind this pair, another set of paws gently stroked the sheath a few taursos in front of it, while one of Erin's countless avatars licked over its tip with a tongue several kilometers long.

Other paws had their own similar yet unique roles, some with pads that were holy land to several nomadic clans, used for worship; others were the object of worship themselves. Some parts of hir had entire research labs, where scientists and mathematicians tried their hardest to put fixed values on Erin's size, making huge advancements in combinatorics and the algebra of the infinite, but still failing to represent Erin's size. Others drew magic power from Erin's seemingly boundless supply, using it to grow their own bodies (an endeavor which Erin often sent avatars to aid, as more hugeness was a truly excellent thing).

It seemed the people living on hir were split up into countless different species, which was all well and good, but it seemed unfair to Erin that shi got to be the only arcataur out there. It seemed the polite thing to do to offer everyone an upgrade! Shi'd planned to offer all the various traits individually, but hir first offer of the package deal was unanimously accepted, so shi simply made everyone into arcataur herms, with extra-large paws and lots of 'em! As a bonus, Erin decided to let everyone pick the details on their own shape, so they could be just as long as they want, growing just as fast as they want, and basically have exactly the look they want. After all, shi reasoned, making everyone identical would mean no one would stand out, even if everyone was perfect. And with everyone identical, well, there couldn't be any art!

But by now it had been a few weeks, and Erin was beginning to get tired. Shi yawned, curling up hir front few million taursos on one of hir paws, and spoke in a voice that reached the entire multiverse: "This has been fun and all, but even goddesses need their beauty rest. I hope you all have fun, I'll be awake before long!" With that, shi relaxed all the way, and hir growth, which shi'd been holding back to less than a trickle, was suddenly able to reach its full speed, immeasurably accelerating Erin's expansion.