A strong ocean breeze blew past Zephyr as he stepped outside the frontier Lookout, and clouds drifted lazily through a deep blue sky. The chubby pup was excited. He had been in talks with a traveling merchant for a few days, and managed to acquire a key opening a portal to a place Zephyr just knew his girlfriend would enjoy. After a month of prep work, he was ready.
Zephyr found Gwen sitting in the blue-green grass sketching some of the exotic plants that grew here in Frontier Bay. Gwen was a pretty cocker spaniel puppy wearing a yellow beanie, with a pink streak in her brown hair, and fluffy pink-tipped ears. She also had a long fluffy tail as she was part golden retriever.
Zephyr was himself a golden retriever puppy, one crossed with a husky. He was plump and bottom-heavy, a gradient of blonde fur ran down his round sides with dark brown fur on his back. Two stripes ran down his face from below his eyes to the corners of his mouth, accenting his chubby cheeks.
"Heyo Gwen, that sketch looks g'weat," Zephyr sat down beside Gwen, wagging his tail. Gwen looked up and smiled. "Wondering, would you be up for a camping trip with me?" Zephyr tilted his head.
"I don't know. Where are camping?" Gwen said in her slight Latino accent.
"Heehee. Someplace new and fun, ya know. Got a new gate key the other day, and I set up a big surp'wise at the end of the hike."
Gwen perked up and put away her sketchbook. "Ooh! It's a date then." 
The pups stood up and headed towards a large wooden doorway sitting near the driveway that surrounded the Lookout. The doorway was covered in vines and flowers growing from it. This gate served as a means of quickly traveling to any place that the Paw Patrol had previously been, but with gate keys they could visit foreign realms too.
Gwen glanced towards Zephyr. "Oh, you did remember to tell Chase we would be out, right?"
"Of course I got his permission. The hike is gonna take a few days, but the journey is part of the fun." Zephyr said.
The doorway lit up and the pups walked through. On the other side they were greeted with the scent of sweets, placing their paws down on cookie ground. Looking around, Gwen saw distant mountains made of layered cakes and flowers made of candy. The pink clouds looked like actual cotton candy in the azure sky.
Zephyr rushed forward and turned around. "This place is apparently called the Cake Zone. P'wetty much everything is edible, I checked." Zephyr smiled mouth open wide and his tail wagged waiting for Gwen's reaction.
Gwen stared in awe. "Ohhh, this place is amazing!"
As Gwen walked along the path with Zephyr, Zephyr ate a chocolatey flower. "You should t'wy this," he said after swallowing.
Gwen ate one for herself. The milk chocolate melted like truffles, and the licorice stem was a subtle cherry flavor. "Mmm. Good, but I think I like your chocolates better," Gwen said.
"I do use a slightly darker chocolate when I bake," Zephyr said. "Eat some more if ya like."
"Hm, no thanks," Gwen said. "I'm gonna watch my appetite while we're here."
Zephyr whined in slight disappointment, but he expected that answer. While she enjoyed being fat sometimes, Gwen also enjoyed being slim and agile. This has been a long period of agile Gwen, and Zephyr was determined to get her to loosen up and indulge. 
So they carried on with their hike. Along the way, Zephyr darted about, offering Gwen a bit of everything they passed. A nibble from a crisp mint tree here, a bite of a cookie rock there, and a bit of a few cupcake boulders too.
Gwen was starting to feel full when the pups stopped for a midday break in a spot filled with giant fudge brownies. Zephyr had been careful to pretend to be eating, only licking things. So his appetite was still strong. "Time for lunch!" Zephyr said.
"We're puppies, we don't normally eat lunch." Gwen hopped up and laid down on a soft brownie.
Zephyr stayed below her and took a bite out of Gwen's resting spot. "Mmm... Come on Gwen, don't make me eat this by myself."
Gwen smiled at the playful puppy and tried to ignore him as he kept eating the large brownie. Zephyr ate a hole into the center, causing the brownie to collapse under Gwen. The spaniel girl fell through with a startled yelp as Zephyr got away giggling. 
"Zephyr!" Gwen clawed her way out of the brownie's remains. "That wasn't nice." Gwen shook off the crumbs and jumped onto a new brownie boulder.
Zephyr shrugged and then hopped up to lay beside Gwen. "Ya didn't get hurt. Must've been the softest fall you've ever had."
"Let's just nap while I digest everything I already ate." Gwen put her head on her paws, and Zephyr did the same.
The pups woke up an hour later, their weight having made dents in the boulder. When they hopped off, Gwen didn't seem to notice the bit of pudge that had formed across her body, softening her face just enough for Zephyr to notice. Zephyr might've gained some too, but it wasn't noticeable on his already chubby self.
Further on down the road, the pups noticed a large pile of giant, blue frosted sugar cookies. Zephyr veered towards it and started nibbling and wagging his tail. Gwen stood by as Zephyr pretended to eat the cookies, but Zephyr wasn't budging until he had enticed Gwen into eating. It took a few minutes of standing around smelling the cookies before the spaniel gave in and joined Zephyr.
The sugar cookies were soft and covered in rich frosting. Gwen ate half of one cookie, patting her belly, now stuffed again. she called Zephyr out of the pile so they could move on. Zephyr climbed out, his fur completely covered in frosted crumbs.
A few hours later, the sun was setting and the pups were growing tired. They had found a creek filled with soda to camp beside for the night. The soda tasted cool and refreshing, and as sweet as anything else they've eaten today. 
Zephyr dug out some of the ground cookie and offered it to Gwen for dinner.
"We're eating cookies for dinner?" Gwen asked. "You forgot to pack the kibble?"
"We didn't need to pack kibble." Zephyr said in a tone that made Gwen's comment sound dumb. Gwen shrugged and the two pups ate cookies before laying beside each to sleep.
***
Upon waking in the morning, Gwen felt heavy. The hike must've been more tiring than she thought. When the spaniel girl walked up to the drink from the soda creek, she felt her legs squishing into her new belly, in fact, even her legs themselves had become soft. She felt her face, her cheeks clearly puffed up slightly. Her butt jiggled ever so slightly as she made her way to the creek.
Zephyr had woken up earlier, and watched as Gwen drank. Gwen was pretty strong-willed, so Zephyr expected this next part.
Gwen turned around and walked over to her boyfriend. "Zephyr, this world is making me fat!" Gwen huffed and glared at the golden pup. "I know what your trying to do. But I'm not gonna let you make me fat again. I'll gain weight when I feel like gaining."
"But it's been forever since the last time." Zephyr rolled his head for emphasis. "We moved to Frontier Bay months ago, and you were in thin mode before then." Zephyr got up and moved closer to Gwen. "I think you've forgotten what it's like ta be big."
"I'm staying thin so I can travel more." Gwen said.
"That makes sense, I guess. Though my weight doesn't stop me." Zephyr said.
"I'm gonna refuse to eat more than the standard two meals today." Gwen got up, clearly winning the argument. Zephyr didn't press his point, he was going to approach this gently.
The pups ate more ground cookies for breakfast before crossing the creek. Zephyr slowed them down by taking a bite out of any treat that caught his eye. Gwen would ignore him and walk onwards.
Eventually they made it to a forested area. Trees of chocolate and peppermint bark grew out of ground covered in frosting that dripped from the trees. Squirrels that looked like cinnamon rolls scurred away as Zephyr led the hike to a large pond of tapioca pudding where they could break for the afternoon.
"How about we go for a swim?" Zephyr waded into the milky pond and looked back towards Gwen.
"A swim through pudding? I guess that couldn't hurt." Gwen ran into the pond.
The pudding was thick, but plenty liquid enough to swim in. Gwen stood splashed some at Zephyr, and he tried catching it in his mouth as Gwen splashed more. Swimming around, Zephyr splashed Gwen too, some of the pudding dripping into her mouth. It was so creamy and the tapioca pearls were soft and fun to chew. Gwen's sweet tooth of old started waking up. She had to sneak a few muzzle-fulls of pudding as they played, whenever Zephyr dove under and couldn't see her.
The pups were coated in pudding once they left the pond. Zephyr licked Gwen clean, and she licked him clean. Then they settled down to nap. Gwen's stomach was surprisingly full. She didn't think she had eaten that much, but she kinda lost track.
Gwen woke up having partially digested her lunch, and feeling heavier from it. She inspected her body again, her was soft despite being close to full. Her ass cheeks gently pressed together beneath her fluffy tail. Her forelegs squished into her chest as she stood, and her neck tugged at her yellow collar.
Gwen knew that once she finished digesting the rest of the pudding that she be nearly as fat as Zephyr. She had let her guard down, but she didn't feel too bad about it. Still, she had said that she wouldn't eat too much that day, and tried to ignore anymore temptations on the forest road.
The pups set down for the night in a small clearing where no frosting trees could drip onto them. They ate more ground cookies, which weren't all that flavourful before Zephyr scooped up some frosting to plop down on them. They had water bottles of soda to wash it down with. Zephyr managed to encourage Gwen into eating most of the cookies, but it was mostly just frosting.
Gwen was certainly fatter in the morning. Her back weighing her down as she stood, and her plump ass sagging over a pair of thick hind legs. The spaniel's belly bowed out to each side and hung down to her knees. Her forelegs were thick, though not as much as her hind legs. She adjusted her collar which had become tight around her neck rolls; the movement causing her round face to jiggle.
Zephyr had gained some weight too, his bulbous butt looked closer to swallowing his tail and sagged onto his heels. His belly hung past his knees, and he also needed to adjust his collar for a thicker neck.
Gwen looked over at Zephyr, he was staring at her admiringly taking in her bigger body. "You're making me blush." Gwen giggled.
They ate a breakfast of frosted cookies dug from the ground, before heaving themselves to their feet and moving on. Gwen now walked with a pronounced waddle, having to balance a fat belly between her puppy legs. Zephyr was darting around less today, and they took a leisurely pace.
Gwen had to think about how she really felt about being this big. Honestly, she missed the feeling of the various regions of her body moving out of sync to her steps, her swaying belly in particular, and her flab didn't stop moving when she did. How great it felt with her bloated paws being pushed into ground by the weight of her back bearing down on her. Even with it being hard to run more than a few minutes before getting winded, she felt large and powerful.
The spaniel pup had been around this fat before she lost the weight last time. It had taken her months to work off the weight, wanting to improve her physique and stamina instead of taking a weight loss potion shortcut. Keeping the weight off was hard, Gwen's appetite had always rivaled Zephyr's own. And now just two days in the Cake Zone, she was back to being obese.
Zephyr saw his girlfriend lost in thought and stopped waddling so she could catch up. "You doin' alright?" 
"I'm good. Just thinking, I really did miss this." Gwen plopped her butt down to give her legs a break, wiped some sweat from her brow, and brushed an ear back. "I can't believe I had forgotten how good it feels to be fat."
Zephyr barked happily and smiled with his tongue hanging out. "So you're okay with all of this? I knew ya would be. You and I are such gluttons. Heehee!"
"Yeah, I'm feeling good now. By the way... How much farther is that surprise you promised me?" Gwen asked.
"Oh, not too far now. It's a bit of a climb though..." Zephyr scratched his cheek as he only just realized that they were getting too fat to climb.
They soon came across a steep cookie hill outside of the forest. It was a tough hike heaving their bulks upwards. The pups had to bite and dig to create footholds or else they would slide backwards to the bottom. After several minutes of careful climbing, the big puppies made it to the top. Left panting and sweaty, the couple laid on their sides took their afternoon nap there.
They woke a couple hours later feeling refreshed. Zephyr's belly rumbled with hunger, and Gwen's responded in kind. They laughed and continued on a winding path until they saw a large gingerbread house. Zephyr got excited and tried running towards it, but his pace barely changed from a brisk waddle. Gwen excitedly hopped after him.
Inside the house Gwen was stunned when she saw it was a single large room, and that it was filled to bursting with pastries and candies. Zephyr grabbed a couple of wide skateboards by the door.
"This is the surp'wise!" Zephyr said. "All this is for you. Plenty ta share, but you get ta eat however much ya desire. The skateboards are for when we get too fat ta reach the floor. We can use our telekinesis ta push us around. Heehee."
"Oh wow! This is impressive." Gwen looked around at the mountainous walls covered in cakes, cookies, pies... Her sweet tooth was fully awake now. She approached some tanks filled with milkshakes and sodas, needing a drink she grabbed a hose and turned on a soda pump.
Then she looked around and decided to dive into the cakes first. They were piled high above her and she started at the bottom, the rest would fall down later. Gwen took mouthful after mouthful of deliciously moist vanilla and strawberry cake until she was fit to bursting herself.
Stifling a burp and covered in frosting, she turned to Zephyr, sounding concerned. "How are we gonna eat all of this?"
"Chase said we can stay here all week. And since you're not in the Patrol, you're free ta stay as long as ya like. Food never gets stale in this realm." Zephyr said. "The best part is..." Zephyr giggled." That we're w'ight back where we started. The gate is w'ight down the path behind this house." 
Gwen stared daggers at her devious boyfriend. "I can't believe. No, I can believe that you would lead me around in a giant three-day circle just to fatten me up." Gwen shook her head, but was actually glad to be reminded how much fun giving in to her gluttonous side was. "It was really fun though, exploring and trying out strange food."
Zephyr laughed and produced a potion for Gwen. "Here, I made a few appetite enhancing potions for ya."
Gwen waddled and took the potions, drinking one. She felt her hunger return to her. She kept eating, digging her muzzle into a wildberry pie. She saw Zephyr sitting on his haunches watching her eat. He had positioned himself near the tanks, and when Gwen opened her mouth, Zephyr telekinetically moved a milkshake hose into it. Gwen's mouth filled with strawberry milkshake to sate her thirst.
Gwen stuffed herself with more pies and shakes, her mind entering a state of bliss as she glutted herself. Her stomach feverishly began working on digesting, the fattening treats of the Cake Zone working on her body more quickly now. Gwen could feel herself plumping up as she waddled over to the cookie pile.
She was quickly becoming obese; her belly pushing towards the floor. Her back rolls growing thicker, merging with her neck roll. She took several bites out of crunchy cookies, filling her fat cheeks up as much as she could before chewing, swallowing, and going for more and more. She heavily waddled back towards Zephyr so he could give her more shakes.
Gwen's stomach was taut with so much food that even the appetite potion had stopped working. She lay down on her belly, panting happily as Zephyr came up to give her much welcomed belly rubs. As the pups listened to the diligent gurgling of Gwen's stomach, the spaniel continued growing. Neck rolls burst open her collar and her face widened.
Gwen's belly slowly lifted her off her feet, and Zephyr pushed the mobility skateboard beneath her mass. Gwen's ass bulged upwards and outwards, sagging towards the floor. The spaniel adjusted her legs, letting her hind legs splay out behind her ontop of her belly. Gwen's paws even bloated up with fat, her once dexterous digits becoming harder to wiggle, and her cute pink pads grew into little pillows.
Zephyr found it amusing watching his girlfriend getting fatter by the moment; his tail wagging when he pushed harder with his belly rubs, eliciting a loud *brrruUUuppp* from Gwen. Embarrassed, Gwen held an ear over her face to mask her blushing.
Zephyr looked at Gwen lovingly, his eyes at half-mast. "Are ya w'eady for more?"
Gwen looked down at her boyfriend, sharing his gaze. "Mmmm... Should I really be indulging myself like this?"
Zephyr responded by pushing Gwen towards the cakes. Gwen couldn't resist and began to eagerly stuff herself even more. She was having so much fun, she needed to eat everything Zephyr provided her. She was truly loving every bite, and every chug. Zephyr busied himself by burying his face into Gwen's hind paws. She going to get massive, and Zephyr was going to enjoy every new inch of her.