"Hey, guys!" Gwen said cheerfully as she skipped toward the group, tail wagging wildly. "What're you doing?" Gwen was a blue-eyed, brown-furred cocker spaniel puppy with the tips of her fluffy ears coloured pink. She almost always wore a yellow beanie with a pink heart and stripes. She was chubby and had been putting on some weight recently.
The Zephyr and Zuma had been lounging about in the yard, enjoying the morning sunshine when Gwen came running over to them. They were both a little surprised to see their friend so early in the morning. Gwen usually stayed home until mid afternoon. But today Gwen was bright-eyed and bushy tailed and ready for adventure.
Zephyr was a bottom-heavy goberian puppy with large floppy ears, fluffy golden fur, and dark markings on his back. His eyes were a deep green and had dark tear stripes below them.
Zuma was a slim chocolate lab pup with golden eyes.
"We were having a lazy morning," Zuma explained with a shrug. "But we can play now."
"I want to get big!" Gwen squealed with delight.
She bounced up and down excitedly, causing her stomach to bounce along with her. It was clear to anyone that she was already overweight. Her belly was round and plump and her whole body looked soft and huggable. Gwen had been purposefully gaining weight to catch up to her boyfriend, Zephyr.
"Al'wight then!" Zephyr said happily. "I'm all for that." Zephyr and Zuma stood up. "We could go get something from the din'a, I suppose."
"Weren't you working on a new potion the other day?" Gwen asked, her tone flirtatious as she leaned closer to Zephyr.
"W-well, kinda?" Zephyr said, blushing slightly. "I managed ta buy this super rare ingredient, but I'm not entirely sure how ta use it yet. It's not exactly a weight gaining sorta thing."
"But you said that you were 'gonna work it into one'." Gwen flipped her ear back with a paw. "I trust that you can figure it out."
"Yeah! Sure." Zephyr said as he scratched behind his ear nervously. "I'll have something ready by tomorrow morning.
Gwen giggled as Zephyr went inside the Lookout to brew the potion. Gwen and Zuma played together the rest of the day.
The next morning Gwen came by again where Zephyr was waiting with the potion. 
"Now this potion is unique in that it'll let ya eat anything and it should turn into fat for ya." Zephyr had his paw on the potion. "It's experimental. Are ya sure ya wanna d'wink this?"
Gwen nodded enthusiastically. She couldn't wait to stuff her face and become even fatter! "Yes I'm sure. Come on, gimme." Gwen said. Zephyr grabbed the potion in his muzzle and held it out for the spaniel girl to take. She flipped open the lid with her teeth and chugged the potion down.
Gwen smacked her lips at the bitter drink. She began to feel a little bit hungrier and looked around for something to eat. Zephyr stood up to reveal a bowl full of kibble behind him. "Here!" Zephyr said and pushed the bowl on the ground between them.
Gwen wasted no time and started munching away at the kibble. The puppy girl's eyes grew wide as her stomach rumbled loudly. "Oooh!" she said with a sigh and another chomp of kibble. "This potion is amazing, I'm even hungrier now! I need more to eat."
"Let's head over to Mr. Porter's din'a." Zephyr said. The two pups trotted off down the road and to the nearby diner. Once there, they waited outside until Mr. Porter came out.
"What can I do for you pups?" Mr. Porter asked.
"We'd like ta order a two bw'eakfast platt'as, please." Zephyr said. 
Gwen waited somewhat impatiently as her stomach growled at her. Finally Mr. Porter came back and handed each pup a tray with the two plates each piled with pancakes, eggs, and sausages. Zephyr just watched as Gwen dug into her meal, her tail wagging so fast. Once she was finished Zephyr pushed his tray towards her. "Go ahead."
Gwen did so eagerly, stuffing her face with more food than she's ever eaten before. But the more she ate, the hungrier she felt. In fact, her stomach felt nearly empty by the time she finished off the second platter. Her stomach was working quickly to to her breakfast into plush fat all over her little body. And the hunger only grew more intense once she was done eating. Then she recalled that her cute boyfriend said that she could 'eat anything'...
Gwen looked down at the plates, beginning to lick them clean as she thought about it. These stray crumbs weren't going to fill her up. So she gently lifted the plate up with her tongue and took a noisy bite out of it. The potion had definitely strengthened her teeth as she easily crushed her bite into sand.
Zephyr was taken off guard by this strange sight, but he didn't say anything. He just sat there with the look of confusion on his face.
After a moment or so, Gwen took another bite out of her empty plate and looked over at Zephyr again, smiling broadly. Some nearby diners looked over to see what the noise was, but Gwen didn't care. She was hungry and continued to eat until all four plates were gone.
"Uh, yeah, okay..." Zephyr said slowly as he tried to understand the strange scene he just witnessed. When Mr. Porter returned, Zephyr promised that he would pay for the missing plates. After paying, the pups walked off through town.
Gwen had a very satisfied look on her plump face as she trotted beside Zephyr. Her belly seemed to be as big as Zephyr's own now, hanging nearly down to her knees and swaying with her steps. Her butt was filling out too, though not as round as Zephyr's butt. It was an impressive gain after just a few breakfasts. The potion was working well so far.
They headed to the park where both human kids and other puppies were playing. Gwen's stomach began growling again as they approached, prompting her to look around for something to eat. She saw a box of dog treats sitting on a bench behind a little girl who was busy playing frisbee with one of her dog.
Gwen started drooling a bit and looked around. Zephyr had gone off to play tag with Zuma and Skye. There wasn't anyone else watching the bench. 'Should I?' Gwen thought, her belly rumbled and she thought about how much she wanted those treats. The spaniel cleared her mouth and snuck up to the bench. She hopped up onto the bench and snatched the box, dragging it off behind a trash can. It hadn't even been opened yet.
Gwen chewed through the box and happily crunched down on the rich dog biscuits. After that, she decided to eat the box too, tearing it into pieces to get at all the crumbs. 'Gosh, I'm still hungry.' Gwen thought. She sniffed around, the can she was hiding behind was full of scraps. 
Gwen was feeling desperate enough to jump up and tip over the trash if it meant she got something to eat. Old wrappers and fast food scraps spilled onto the ground with a clang. The fat spaniel pup gorged on the old leftovers, eating stale trimmings of hamburgers, cold fries, wrappers stained with ketchup and mustard, and more. She savored every crunch and flavor that she could taste, her tail wagging behind her as she filled her belly and cleaned out the trash. 
"Gwen!" Zephyr came up to Gwen as she finished eating. Zephyr was surprised by what he saw, Gwen had become not only fatter than she was a few minutes ago, she was also a head taller than Zephyr now.
"Brrrrp!" Gwen stood up and waddled closer to the goberian pup. Her whole body wobbled from her back to her butt. Even her legs were pudgy now. "No regrets. And look at me, I'm getting large." Gwen turned around to show off to her boyfriend.
"You look gw'eat, but you shouldn't be rooting through the tw'ash." Zephyr said."You're not a w'acoon."
Gwen sat down with a humpf. "If you want to see me get bigger, then I guess we need to find something else for me to eat." 
"Are you still hung'wy?" Zephyr tilted his head. Gwen's stomach rumbled a noisy response. Neither pup took notice of the girl looking around the bench, wondering where the biscuits were. "Well, I guess the potion will wear off eventually. We can stop by a fast food place on our way back to the Lookout." Zephyr used his telekinesis to right the trash can. Gwen smiled happily and began waddling along beside her boyfriend.
Gwen's stomach growled all the way there, so once they were inside Zephyr ordered 4 combo meals and milkshakes. The pups sat at a booth while they waited for their food. Gwen was antsy and absentmindedly started nibbling the table. She wouldn't be the first dog to do this, but she was the first to bite the corner right off. This startled both pups, but Gwen kept chewing and ate it.
Zephyr quickly turned towards the cashier to apologize. "She's just W'eally hung'wy, and going through a gw'owth spurt." Zephyr said. Gwen felt a little embarrassed and stopped chewing up the table.
The cashier just shrugged and didn't say anything. A few minutes later, their food was brought out on two trays. Gwen drooled and ate the wrapping off of her cheeseburger before starting in on the burger itself. Zephyr drank his shake, which was served in a bottle made easy for dogs to hold.
As Gwen stuffed herself with the greasy burger, her stomach churned and she could feel herself getting fatter. When her yellow collar strained against her flabby neck, she scratched at it and took it off. Then she grabbed a strawberry milkshake in her paws and chugged the thick shake. Gulp after gulp, the spaniel could feel fat piling onto her back, and her widening butt taking up a bit more of the seat.
"Brrrrruupp!" Gwen sighed as she set down the empty bottle, and started in on her second burger.
Zephyr was enjoying watching Gwen eat to her heart's content, though he was a bit concerned with Gwen gradually getting taller and not just fatter. The beanie she always wore was starting to get too small. Gwen grabbed a box of fries and dumped them into her mouth, then tossed the box in after. She needed another milkshake after the salty fries. Her belly began squishing into the table and she realized that she needed to get on the floor while she could still slide out of the booth. The movement working another belch out of her when she landed.
Zephyr wasn't the only one who could use telekinesis, Gwen looked up and conjured up a pair of shiny 'ghost paws' to fetch her food. She finished off her shake and moved on to a large order of chicken nuggets. At this point, the growing spaniel was as tall as a full grown dog, and nearly three times as wide. The potion was appearing to focus on her height now in an attempt to keep the pup mobile.
Gwen finished off the nuggets, and the box, and another box of nuggets. She ate the remaining three orders of the fries, licking up whatever she spilled on the floor. Then finally finished everything off with the last milkshake. Gwen was at muzzle height to the table now. Her flab had been given a little more room to spread. Zephyr felt impressed, his girlfriend tore through that meal so easily.
Gwen gently rubbed her belly and squeezed it. "Brrrrrp. I think I'm full, probably," Gwen blushed."Sorry you didn't get to eat much."
"Oh, no wo'wwies. I only needed the one milkshake." Zephyr slide out of the booth and carried the remaining trash to the can. Then the pups headed out to rest at the Lookout.
***
Once they were back at the Lookout, Gwen found herself a comfortable spot to sprawl out on the lawn. She laid on her side and angled her belly towards the afternoon sun. She even dozed off for a while. Zephyr laid down next to her and watched her sleep.
When Zuma got back he was shocked to see Gwen. "Duuude... What happened to her?"
"It took awhile long'a for the potion ta wear off than I expected." Zephyr rubbed Gwen's belly. "But ya can't argue with these w'esults."
"I guess." Zuma sat down on the grass beside his friend. He glanced over at Gwen, who was snoring softly. Gwen's belly rumbled and she started drooling. "Must be dw'eaming about food, heehee."
Gwen's belly continued growling until it woke her up. She knocked Zephyr over when she suddenly stood and sniffed the air. It wasn't pleasant waking up feeling like she was starving. She had to eat right now. Gwen spotted a bush and ran towards it, tugging off branches and chewing them hastily.
"Hey, that's not normal Zeph'a." Zuma said as Zephyr picked himself up. The boys went up to Gwen who was making quick work of the bush.
"Maybe we should give her something else to eat." Zephyr said.
"I'll call W'yder." Zuma pressed his pup tag and called Ryder. "Hey W'yder, we might need some help." Zuma begun thinking about how odd this situation was.
"What do you need, Zuma?" Ryder asked through the tag.
"Gwen dw'ank a potion, now she's eating a bush?" Zuma said. Zephyr cracked up and bit back a chuckle. "We need to feed her real food before she eats anymore of the lawn."
Gwen could hear them talking behind her, she was less embarrassed and more just hyper-focused on easing the hunger pangs. The big girl moved to another bush a few feet away after finishing off the first. 
A few minutes later, Ryder arrived with a jumbo bag of kibble. The big bag was usually meant for feeding all the pups living at the Lookout, but looking at Gwen it might be just enough for her alone. When Ryder opened the bag, Gwen smelled the food and stopped eating the poor bush. She was drooling as she turned to bury her head in the kibble.
"Zephyr, how in the world did she get so big?" Ryder stared at the jumbo spaniel.
"W-well, I uh. I gave her a potion." Zephyr said. "I kinda alta'ed the w'ecipe to suit her. It wasn't originally a weight gain potion, but I thought I knew how ta turn it into one."
"I thought you said it wore off al'weady?" Zuma said.
"It should've, I think..." Zephyr bowed his head. "She looks like she's enjoying herself, at least."
As the spaniel made her way through the bag, Gwen steadily began growing again. Both fatter and taller. She was as tall as Ryder now. Gwen's belly hung well below her knees and bulged out to the sides. Her back bulged outwards above her head, and her butt grew to keep up with her belly. Gwen pulled her head out of the bag, and even her cheeks had plumped up to the size of grapefruits.
Gwen began examining her body, moving about and feeling herself jiggle all over. Her heavy footsteps prompted her to sit her heavy butt down and look at her paws. "Wow! I'm so fat that even my paws are huge." She wiggled her fat digits towards Zephyr. Her paws were bigger than Zephyr's head.
"You're looking gorgeous, Gwen." Zephyr wagged his tail and smiled.
"We need to get her back down to puppy size, Zephyr." Ryder said. 
"I don't wanna get smaller! I wanna get fatter." Gwen stood up and waddle-stomped towards town. She moved slowly, but the pups knew they couldn't stop the boulder of a pup.
"I'll head to my apothecary and work on an antidote." Zephyr dashed off.
"Zuma, I'm gonna send you and Skye to follow Gwen. The potion is affecting her judgment, but try to keep her from eating any more bushes."
"Let's dive in!" Zuma dashed off, surprised by how far Gwen had already gone.
Gwen stomped through the town, entranced by how heavy each step was. Her whole body jiggled as she waddled along the main road. People on the sidewalk stared at her. Gwen knew that they were wondering what had happened to her. She didn't care, all she wanted right now was to eat more and grow bigger.
Gwen saw a few cars parked along the sidewalk and her growling stomach told her that she should eat those. She pushed her way past the bystanders and bit into the hood, ripping off chunks of metal. Her saliva was able to melt it like chocolate, as she chewed through the car.
"Gwen!" Zuma called out. "You gotta stop that, that's someone's car!" When Gwen ignored him and took another bite of the hood, Zuma jumped up on the back of the car and climbed to the top. "Gwen, what are y-"
Gwen reached up and grabbed Zuma in her mouth and dumped him on the sidewalk. Zuma was a little grossed out and shook himself dry. 
"Don't try to stop me, Zuma! I'm starving." Gwen continued while Zuma stood around trying to think of what he should do.
Gwen grew even taller as she ate. After eating the tires, she was now tall enough to play with a second car like a chew toy. Gwen's fat paw crushed the car as she pulled it towards her mouth. She chewed through this car even easier, and grew as tall as a house as she did.
Speaking of houses, Gwen thought the yellow office building next to her looked kinda like a lemon cookie. She licked the wall, her magic drool making the stonework softer like she was licking a cracker. Gwen bit into the corner of the roof, chewing a chunk off. 
Gwen could hear an approaching helicopter, and knew it was Skye. "Hey, Zuma! Gwen's eating the building!" Skye called out through Zuma's pup tag.
"How can I stop her!? W'yder?" Zuma said.
"Bring her into the woods near the highway. We'll have food for her there." Ryder said through the pup tag.
Gwen's ears perked up at the promise of real food. She stopped eating the building and turned around. Zuma had to be careful that she didn't accidentally step on him. Gwen waddled towards the forest, her belly hovering above the ground and her footsteps cracking the pavement.
***
Skye and Zuma followed behind Gwen. The giant spaniel stomped through the forest; pushing aside the trees with her bulk, bending them over and smashing them into splinters under foot. Gwen was getting tired of carrying her bulk around, and hunger gnawed at her more with every labored step. Moving such bulk around got Gwen working up a sweat.
Gwen suddenly stopped for a rest. As she lowered her ginormous butt down, Zuma scrambled to get away, but didn't move in time. Her sweaty butt smooshed the chocolate lab pup, who squirmed his way out from under his friend. Zuma shook himself dry. Gwen grabbed a tree and uprooted it with her muzzle. She wondered where Ryder was with the promised snacks, but the trees would do for now.
Zuma stared at the giant dog who was about to devour another tree. He was worried that Gwen might get too big for the team to handle. Each tree made Gwen a little taller and wider. She ate four trees before she got up again, and was beginning to tower over the forest.
"Zuma, where's the food?" Gwen's huge cheeks wobbled when she asked.
"It's, um... It's coming! Zephyr's bw'inging it, yeah." Zuma said. He was starting to get scared.
"I'm thirsty, can you lead me to somewhere to get a drink?" Gwen asked.
"Sure, I know a lake nearby." Zuma figured that water won't be too fattening, and maybe they can swim and wash off.
Gwen followed Zuma, crashing her way through the trees. They reached the lake and Zuma stopped at the edge of the water. It was a large body of water that stretched through the forest up to the base of Jake's Mountain.
Gwen bent down, squishing her belly into the earth, but she had grown to large to reach the water from the shore. So she got up and waded into the lake. When it was deep enough to cover most of her body, she bent her head down and started sucking in the water. Her belly bulged as it filled with water. Gwen was having so much fun, her belly swelled like a balloon as the water level fell. Gwen's belly raised her off her paws until she couldn't reach the lake anymore.
Stranded for the moment Gwen decided to take a nap, much to Zuma's relief. Zuma chatted with Skye while they waited on the shore for Zephyr and Ryder to get here with the antidote. It was taking a while, and a few hours passed while Gwen steadily grew larger and larger. Gwen dried off in the sun and her belly went back to its previous size, relative to her height, as she slept, regaining mobility by the time she woke.
"Oof! That was a good nap!" Gwen said, stretching her legs and turning to face Zuma. He looked so small from Gwen's perspective. "Is the food here yet, Zuma?" She was still starving, her cavernous stomach growling loudly for more.
"It's coming!" Zuma said.
The lake only went up to Gwen's knees now, though her belly hung well into the water almost to her feet. Gwen shifted her weight and raised a leg, wide as the building she tried to eat a few hours ago, up onto the shore. As she put her weight down the muddy ground, and her paw, splashed into the lake. She shifted her weight and tried her other leg, but the soft ground just couldn't support her.
Gwen growled. She loved being this big, but this size came with some difficulties she hadn't planned for. That didn't deter her from her goal, she still wanted more, and the massive puppy was not slowing down. She turned around and waddled off, looking for more stable ground to pull herself out of the lake. Zuma put on his vest, his scuba pup pack, and swam after Gwen. Each sway of her fat thighs sent waves rippling through the water; repeatedly pushing Zuma away as he swam behind her big behind.
The behemoth made her way down to the far side of the lake, where it met with the mountain. The ground here was more solid, and Gwen could pull herself onto dry land after struggling a bit to get her belly up. At some point during all the splashing, Skye's helicopter had flown off, and it was returning. The helicopter had a rope and harness deployed from the bottom, and Zephyr was strapped in with a potion in his paw.
"Zuma," Ryder said through the pup tag. "You can back down now. Thanks for helping us keep track of Gwen." Zuma was tired after the hard swim, and collapsed on the grass with sigh.
Gwen reared up onto the mountainside and busied herself with taking bites out of it. With her being so big, it was going to her head. Gwen wanted to become the biggest thing in all the Adventure Bay area, and this mountain was the only thing left that was bigger. If she ate it she could solve her problem and maybe even grow to surpass the size it was before. She didn't even mind how sweaty she was making herself as she got to work.
"Gwen!" Zephyr called out. Gwen turned around to face the tiny helicopter. Her cheeks alone were bigger than the whole vehicle, not to mention her head. With her sweating again Zephyr and Skye could smell her from there.
"What's up?" Gwen tilted her head.
"You gotta stop eating," Zephyr held up the potion in his paw. "This will turn your appetite back to normal."
Gwen growled and snarled. "I'm not done yet! This mountain is asking for it." Gwen pulled herself up higher and bit off a cliff. The copter's buzzing was getting annoying. Gwen turned her head again, taking a deep breath, she blew a fierce gale that pushed Skye and Zephyr quite a ways over the lake. Now she could eat the mountain unhindered.
Gwen greedily dug into the mountain wherever there was a spot easy to get her muzzle around. Hoisting herself up when she made a new ledge, working her way up. Each bite caused the spaniel to grow by the yard. She could feel how heavy she was getting. The weight slowed her movements and she realized that the height growth was struggling to keep up with her. Every inch of her ginormous body was filling with fat; from her paws to her legs, her neck, back, and belly. Her fur was drenched in sweat now, pouring off of her in streams.
She was worried that she wouldn't make it to the top before her fat butt dragged her back down. She tried to focus on clawing her way to the top, but her appetite begged her to keep eating on the way. Soon enough, the mountain couldn't support her weight and she slid down to the base on a mudslide with a startled yelp.
Gwen laid on her belly, staring up at the mountain. The helicopter returned and dropped Zephyr down on top of Gwen's squishy back. Zephyr was pretty impressed by how wide his girlfriend had become, the brown-furred expanse stretched out like a full american football field to each side. Zephyr's paws sunk into her smelly flab as he made the trek towards Gwen's head. Gwen was immobilized by her girth, and so used her ghost paws spell to dig into the mountain and bring her more to eat.
"Zephyr, she's still eating..." Skye said through his tag.
Zephyr could feel some vibrations from the rapidly growing puppy beneath him. Waddling over her fat was a slow job, and Zephyr kept slipping on her sweat-soaked fur. That gave Gwen plenty of time to stuff herself. If her tail wasn't buried in her fat butt, it would be wagging up a storm. The mountainside was filled with deep holes, and Gwen's belly was raising her up higher and higher. By the time Zephyr finally made it to the back of her neck, above her head, he could nearly see the mountain peak.
Zephyr took a breather for a quick moment before turning and climbing down. He tried digging his paws in, but lost his grip and fell onto Gwen's enormous cheek. Now he could look her in the eye. And what an eye, her blue eyes were easily 50 times larger than Zephyr if not more. Gwen's cheeks rose and fell, jiggling with each bite of stone and shrubbery. 
Zephyr balanced himself and addressed Gwen. "Gwen, you've gotta stop eating. You're nearly as big as a mountain now."
That was exactly what Gwen wanted to hear. She opened her mouth wide, letting out a loud burp. "I'm gonna be the biggest thing ever!"
"No you aren't," Zephyr pleaded. "You need to get back to normal."
"I'm not stopping until I'm the biggest thing in all of Adventure Bay!" Gwen used a giant ghost paw to swiped Zephyr off her cheek. The chubby goberian landed gently on a roll of neck flab, and Gwen went back to eating once more.
Zephyr picked himself up, crawled under her cheek, and towards her muzzle. He was gonna have to pour the antidote into her mouth himself. Gwen crunched loudly and messily at the boulders her ghost paws brought her. Zephyr had to be careful not to get hit with flying rocks while he waited for an opening. He used his telekinesis to carry the potion and tip it into Gwen's mouth quickly, and fetch the empty bottle back.
Gwen smacked her lips at the sudden bitterness. Finally it was done! Zephyr climbed back on top of Gwen's cheek to speak to her.
"Zephyr..." Gwen glared at him.
"This antidote won't sh'wink you back to normal size w'ight away." Zephyr said hoping to reassure her. "It just stops the hung'a pangs, and takes away your ability to eat everything." Zephyr nuzzled Gwen's cheek."You'll still be the biggest person in the region for a few days."
"Well that sucks." Gwen let out a long sigh. "I guess I should enjoy this weight while I can. It feels so good."
"I'll stay w'ight here with ya the whole time." Zephyr said. The pups looked out, they were higher than the peak of Jake's Mountain. "I'm sure some of the other pups will come up ta visit us too. We'll have a ton of fun. Heehee."