Zuma and Zephyr had been best friends long before they had joined the Paw Patrol. Zuma had joined first, and had encouraged Zephyr as the chubby goberian puppy trained in alchemy. Zephyr eventually joined the Patrol as their alchemist pup and set up an potion's atelier in the Lookout's newly built underground home area. 
Now, it had been several years since Zephyr joined the Paw Patrol. 'Course everyone were still puppies, as in this universe, folks only aged to the point they felt was natural for themselves. And Zuma had started dating Zephyr in the time since. Zuma was always in awe of all the things Zephyr's potions could do. One day he approached his boyfriend offering to help Zephyr test out new potion recipes.
"Dude, your potions are awesome!" Zuma exclaimed. They were sitting down in the living room, having a casual talk about the missions they'd done that week. "Don't you want to try making some new potions?"
"Yeah, that would be fun ta t'wy," Zephyr's tail swayed and his eyes lit up. "I got a buncha f ideas for kinky potions."
"What if I helped you test them out?" The chocolate lab tilted his head.
"That would be kinda w'isky. No telling what kind of side effects might occur," Zephyr said. "But if that's alright, then there is one idea that I w'eally w'eally wanna do." the chubby golden pup jumped off the couch and ran to his atelier across the lobby area with Zuma running behind.
 Zephyr's Atelier was a large wooden lab with many shelves, worktables, and a countertop at puppy height sat in the middle of the room. Zephyr used telekinesis to pull a few jars of plants and dust from a shelf and started work brewing the potion in various glassware tools. Zuma laid down and watched for the next hour or so.
When it was finally finished, Zuma sat up and took the potion from his boyfriend. It was a blueish-violet syrupy liquid as he rolled the bottle in his paw. "What's this potion supposed to do?" Zuma asked.
"It's an aphrodisiac, sorta," Zephyr waved his paw up and down. "I made cupcakes last night that we didn't finish, you're gonna wanna eat something after drinking that."
Zuma thought about eating cake and licked his lips. He lifted the potion and drunk the strange syrup. It tasted like berry juice and grass. Then the two pups went into the kitchen to get the cupcakes out of the fridge. 
"Here ya go bud," Zephyr floated a chocolate cupcake towards Zuma and he ate it in a few bites. "How are ya feeling after that?"
Zuma thought for a moment. "I think I'm maybe slightly warm? Like, all over warm."
"Have anoth'a cupcake," Zephyr floated another cake to Zuma.
"Mmm... Feeling warm'a, it's a comfy kinda warm." Zuma ate a third cupcake and started feeling something new. The growing warmth was beginning to turn into a sense of excitement, and Zuma's tail begun wagging in response. He grabbed another cupcake and the excitement grew. The sensation spread down to his groin and flooded his little body in hormones. 
"How is it now?" Zephyr noticed the change in Zuma's mood and was getting excited himself, his tail wagging along with Zuma's.
"Goodness dude... This is exciting!" Zuma said. "My dick is so hard now, just from eating cupcakes?" There was one more left and Zephyr handed it to Zuma. The excitement grew stronger and Zuma felt incredibly horny, thankfully his boyfriend was right in front him. Zuma walked around behind Zephyr, who promptly raised his fat ass for Zuma to mount it.
The brown lab pup grabbed onto Zephyr's backside and rubbed his dick between the chubby pup's butt cheeks. He pressed into his lover and humped away as the pleasure became greater and greater until the two puppies came together, covering Zephyr's tail in and the kitchen floor in cum. They both laid there panting and staring at each other. 
"I'm still feeling that strange warmth," Zuma said after he caught his breath. "but the excitement is fading a little."
Zephyr got up to lick the floor clean. "Seems like this recipe works as intended! Maybe even bett'a." Zephyr was clearly proud of getting this potion right on the first try. Zephyr gave Zuma a kiss before heading off to the showers to clean his tail-end.
***
Zuma spent the rest of the day thinking about how it felt. The cozy warmth of the potion was really nice, but the sex was intense. It was like one slow orgasm which built into a big climax of a real orgasm. Zuma dreamed about fucking Zephyr that night, and woke up to a very messy dog bed. He decided that he'll toss it in the laundry later.
His night of wet dreams must've been tiring; as Zuma felt slow as he made his way to the dining room for breakfast. Robo-pup had already filled everyone's food bowl. Zuma walked up to his and gave his kibble a sniff. "Ugh, I don't think I'm hung'wy right now."
Marshall, a tall dalmatian pup, came over and placed a paw on Zuma's forehead. "Are you sick?"
"I'm just tired." Zuma said.
Marshall put on his paramedic gear and popped a thermometer out of his red pup-pack, sticking it in Zuma's muzzle. He pulled it out a moment later, using an arm from his pup-pack, and looked at it. "No fever... You should rest in the living room today. I'll keep an eye on you." 
Zuma slumped down on the couch. There wasn't much he could do since the others were all busy doing their missions for the day. Marshall sat down on the other couch next to Zuma, and they watched cartoons for a few hours.
The dalmatian pup went over to check Zuma's temperature again, but there still wasn't any fever. "I wonder why you're still lethargic... Did you eat anything strange yesterday?" Marshall asked.
"No, just some cupcakes before dinner," Zuma said. "Wait, you don't think Zepha's potion is doing this, do you? It wore off a long time ago."
"What kinda potion was it?"
"A new one. Dude, you gotta t'wy it yourself. It was wild," Zuma said.
"I think we should talk to Zephyr about this," Marshall said.
The two pups went to the atelier to see Zephyr brewing a couple more potions. "Hey guys. Are you feelin' any better Zuma?" Zephyr said.
"Not yet. Ma'shall thinks your potion is having side effects, but I thought that only happened before it wore off," Zuma said.
"Well, there's a chance it's a side effect, yeah," Zephyr put down the potion he had just finished bottling. "You should be fine if it's just mild symptoms."
Marshall came over and sniffed at the potion, "It might just wear off with time then."
"Yeah, you guys don't have to wor'wy," Zuma walked up and grabbed a potion, the indigo colour told him it was the same as yesterday. "Can I have another one?"
"Yeah, sure!" Zephyr smiled. "I noticed that it wears off faster after 'playing'. So I made some adjustments to make it last long'a."
Zuma downed the potion and happily trotted off to his dog bowl and ate a late breakfast. The pleasant warm sensation kicked in, though it was less intense than the first time since there wasn't quite as much food in his stomach. Still, Zuma enjoyed it all day long while watching TV. That evening, as the warmth was fading, Zuma asked Ryder if he could have extra kibble. After arguing that he had a bad day, Ryder agreed that the chocolate lab could have another bowl of kibble.
Zuma was thrilled to stuff his face with kibble, more thrilled than natural thanks to the potion. He felt an odd tingling feeling throughout his body. There was something about each bite that turned it into a sensual experience rather than simply eating food, and Zuma savored every bite until his bowl was empty and his belly full.
The lab pup gave a suggestive look to Zephyr, who had been watching. "Hey dude, wanna play some more?" he asked. "I'm all charged up." Zephyr jumped up and the two ran off to Zephyr's room for a night of sex.
Zephyr's bedroom had a large dog bed on one wall, and the entire opposite wall was a mirrored closet. The two lovers began in a 69 position, Zephyr on his back, Zuma sucking Zephyr's fat cock while his boyfriend licked Zuma's tail-hole. Zuma adjusted himself and thrust his cock into Zephyr's muzzle and rocked his body back and forth on top of Zephyr's soft belly. Zephyr came and a moment later Zuma followed, but Zuma kept trying to fuck the goberian pup's mouth until Zephyr tapped out on Zuma's ass.
"Oh sorry dude," Zuma pulled out and got off of Zephyr. Zephyr gasped for air before righting himself. "I think the improvement you made is working. I'm still so horny."
"Well, I'm hung'wy. As usual ya know." Zephyr shook his paw. "So I don't mind giving you blowjobs until you're satisfied." The goberian pup bent down and slide under Zuma to start suckling his dick. They held this position until Zuma came three more times. It was the best time he's ever had, and Zuma felt so happy to have such an attentive boyfriend. And the two of them fell asleep as soon as the lights were off that night.
***
The next morning, Zuma was back to feeling sluggish with no appetite. How could he go from a night like last night to what he was feeling now? Zuma knew he needed another potion to start his day, and remembered that Zephyr had made several. So before heading to breakfast, Zuma went into the atelier's 'kinky cabinet' and grabbed a couple potions. After drinking one, he went to eat.
"How are you feeling today?" Marshall asked when Zuma showed up.
"I'm feeling pw'etty good today. Still got my appetite," Zuma ate his breakfast, happy for the warmth.
Later that day, Zuma went out to help Cap'n Turbot clean up some trash on the lighthouse island. The lab puppy kept thinking about the previous night and how much fun he's gonna have later. He figured he'd play with his other boyfriend, Rocky, tonight. After the job was done, Zuma got a dog treat. Before going back home, Zuma decided to go get some fast food and intensify the warmth further before dinner.
He might've overdone it with the cheeseburger and milkshake because as soon as the food was down and the warm feeling kicked in, Zuma was back to being turned on. He could barely focus on driving his hovercraft back to the Lookout. As soon as the elevator took him down, the lab pup was quick to head to the workshop where Rocky was tinkering with some old thing. Zuma didn't even ask permission before mounting Rocky's backside.
"Umm, hello Zuma?" Rocky stood up and looked back. Zuma held tight and tried getting his hard dick into Rocky's ass. 
Zuma let go of Rocky. "S-sorry dude, I'm so horny w'ight now!" 
"Don't worry, I won't complain if you want to keep going." Rocky kissed him on the cheek. "Maybe some lube might help you here." Rocky stifled a giggle, not really understanding what was up with Zuma, and pulled out his bottle of lubricant. Zuma let Rocky apply the lube, but came as Rocky was doing it.
 The grey pup raised his ass for Zuma to mount. Zuma did and fucked his boyfriend until he came twice more. The potion's effects wore off before dinnertime, but Zuma hadn't lost his appetite yet. By bedtime however, the lethargy was settling in and Zuma remembered that he forgot to wash his bed. So Zuma spent the night in Rocky's room.
***
Zuma drank another potion first thing the next morning. He didn't want anyone to worry about him being too tired. Zuma took his time and was the last to finish breakfast.
Zephyr noticed that Zuma was looking a bit bigger in the balls as he was eating. "What?" Zephyr held Zuma's balls in his pudgy paw. "These things are as big as mine and W'ocky's. How did that happen?"
Zuma blushed a little when Zephyr touched his balls. He swallowed his last bite and turned around. "I, uh, guess it's another side effect from the potion." 
"I guess you're drinking them a lot. Maybe a minor effect is building up over time..." Zephyr trailed off, thinking about how the potion works.
Zuma left him to his pondering and plodded out to get some more breakfast from a fast food place. He was feeling good today, but he knew he could feel even better if he stuffed himself. He ordered a breakfast big enough for several puppies, and took it all to his room. Zuma decided to challenge himself to see how long he could last before he came. The whole experience seemed to make the egg and sausage sandwiches taste better than ever. He struggled to contain himself after the fourth sandwich, his hormones were begging him to fuck someone or something, but he kept going on until he ate a few more. He then realized that he had never eaten this much food before in his life. Zuma's belly was stuffed completely full and he still had more to eat, but he couldn't help himself. Zuma let out a pleasured moan as his dick pumped his puppy cum onto the blue carpet. After cumming a few times, Zuma was fully aware of how stuffed he was. So he curled up in the corner for a nap, his bed was still out for washing.
The lethargy had set in by late afternoon, and Zuma barely felt like getting up. His head felt heavier than last time, maybe the side effects were in proportion the orgasm? He thought about it as he found himself heading towards Zephyr's atelier. He found his chubby boyfriend reading a book, and plopped onto his side in front of Zephyr. 
"Zeph'a. Do you have any more of that potion?" Zuma asked.
"I haven't made anymore, no," Zephyr tilted his head. "They aren't too hard ta make, but haven't you been using them a lot lately?"
"Duuuude, these things are amazing! You gotta make more. Just look at this," Zuma gave the puppy dog eyes and raised a hind leg, showing off that both his dick and balls were a little bigger than this morning.
Zephyr stared for a moment, taken aback by Zuma's intensity. If it made Zuma that excited, then why not. The goberian put the book away and got started on making more. Zuma just laid there, half-napping, while he waited. An hour later, Zephyr handed Zuma a potion.
"Is this all?" Zuma asked.
"I need to go get more ingredients from the greenhouse before I can make more. This one should last you for tonight." Zephyr went back to reading his book.
Zuma felt a small panic. He sat up and put a paw on the book. "Dude, one potion isn't gonna last long."
Zephyr looked up at his boyfriend. "It'll be okay. Just try not ta use it too soon, al'wight?"
Zuma nodded, but his thoughts were racing. He tried not to think about how long he could go without using another potion. Instead, he focused on his boyfriend. He decided that he would try to please his chubby lover, and not worry him too much. He would hold off till tomorrow, and give his body a chance to recover. But he knew deep down that he wasn't strong enough to wait that long.
Zuma trudged to the living room and pulled himself onto the couch, not having the energy to jump. He tried focusing on cartoons, but he was distracted by how awful he felt and how good he could be feeling if he just drank the potion right now. It was hard for him to stay awake, and the longer he watched TV, the more he wanted to sleep. He closed his eyes and let his mind wander. 
The chocolate lab slept until dinner time. He had hoped to be feeling better by then, but he didn't have any appetite. He sat there with his nose in the kibble and yawned. Zephyr and Rocky were worried about their boyfriend, but didn't know what they could do.
"Hey buddy," Zephyr hugged Zuma. "I'll make more potions tomorrow so you can drink the one you have now."
Zuma's mood shot up instantly, and his tail wagged fast. "Thank you so much!" Zuma drank the potion he had and tore through his kibble. "I think the th'wee of us should go out to get a second dinner. I'll pay for it." Zephyr liked the idea. The three pups brought take out home and had a blast with each other that night.
***
 The next few weeks, Zephyr made sure Zuma was kept supplied with potions while he tried to figure out how to cure the lethargy side effect. Zuma consistently drank two potions a day, and ate as much food as he could fit into his stomach. Rocky and Zephyr took turns as Zuma's sex partners, and licking up any spills when Zuma came on the floor from overeating. 
Of course all that binging was having an effect on the once slim labrador puppy's figure. He started looking like he wasn't getting enough exercise. His butt was no longer firm, but was soft, round, and a little saggy. His belly rounded out and sagged down to his knees, and fat built up on top of his back too. Zuma's paws and legs thickened, making his footsteps increasingly heavy. His neck chubby neck hugged his collar, and along with his rounding cheeks, gave him the appearance of having never worked a day in his life.
Rocky and Zephyr were enjoying all the changes alongside Zuma. They three puppies also discovered that Zuma's junk grew a few centimeters every time he came. Like the potion was trying to adjust Zuma's biology to better suit his newfound lifestyle. Zuma's balls were as large as grapefruits; they hung heavily just above the ground. Zuma's dick would regularly poke out backwards from under his balls as he ate his meals. The first week of this happening were embarrassing as all the pups, and even Ryder, could see how turned on he was by his food. But as his junk grew, Zuma got used to not being able to hide it, and soon didn't care. Now he felt proud to be the biggest boy on the team.
Zuma was becoming sluggish at times, not from the side effects, but due to his overindulgence. Even so, he still found time to play in the yard with the other pups in between meals. Playing tag with Skye and Everest was especially fun. He was so much slower than them, and they laughed every time they ran away from him. They still let him play even though he was slow as molasses compared to them. Sometimes tag ended with Zuma trying to hump one of them and failing, as his big belly would get in the way of anything more than a hug. They never let him feel bad about it though; it was just another hilarious part of their game. As Everest was also dating Zuma, the husky girl would help him let off some steam after their games.
Ryder was getting concerned about Zuma's health as Zuma got fatter and more dependent on the potions. Zuma and Zephyr assured Ryder that they could always find a solution to get Zuma back to normal. Zephyr insisted that 'in magic, every action has an equal reaction', hoping that the familiar phrase would ease their leader's worries. As this wasn't exactly the first incident like this, Ryder decided to believe in Zephyr.
Zephyr continued to experiment with new recipes, trying to find a cure for the side effects of the potions. Though, he was half-tempted to try enhancing the potion further instead. He wanted to see what else he could make Zuma's body do. One day, as Zuma was eating dinner, Zephyr made a suggestion.
Zuma finished eating as Zephyr explained his idea to him. "What if we made some of the potion more powa'ful? Then you wouldn't need ta drink as many." Zephyr was entranced by Zuma's body, and ran his paws along Zuma's squishy bulk. Zuma wiggled in response to Zephyr's touch and licked his lips hungrily.
Zephyr grinned and continued, "I bet if with a few adjustments, you could eat even more before you cum." 
Zuma's floppy ears perked up at the thought of being able to eat more before cumming and his body shuddered in anticipation. "Dude, you're so cool."
Zephyr's tail wagged quickly as he felt a little proud of himself. He loved impressing his boyfriend. He also was excited at the idea of making more potions for Zuma. While Zuma was eating his usual second dinner in the living room, and getting blowjobs from Rocky and Marshall, Zephyr got to work on the new potion.
By the following morning, the potion was ready. This should give Zuma a larger appetite, and more delay between his orgasms. Zuma was waiting eagerly as he had used his last potion already. The lethargy coupled with his weight gain meant that Zuma was stuck in bed until he got the new potion.
Zuma licked his lips hungrily as he imagined what the potion could do for him. "Al'wight! Let's get started."
Zuma drunk the potion and felt his energy returning to him. He heaved himself up and waddled his way to get breakfast. His huge balls were dragging on the floor beneath his saggy ass. Zuma was feeling ravenous as the potion kicked in, and practically inhaled his kibble.
"Today is gonna be a big day buddy!" Zephyr said after finishing his own breakfast. "Let's go outside first."
Zephyr slowly led the heavyset labrador into the nearby forest, in it was a clearing they regularly used for privacy. Zuma plopped down onto his belly, panting from the short trek.
"Heehee, ya look just like a big seal sitting like that," Zephyr said, poking at Zuma's belly.
"Aww, you think?" Zuma jiggled around on the ground and wiggled his butt.
Zephyr chuckled and started to tickle Zuma's sides. Zuma squealed and squirmed, but his belly prevented him from doing much.
"I'm sooo hung'wy." Zuma whined, still wiggling.
Zephyr smiled. "I know, I know. I'll get ya something ta eat. W'ocky, Ma'shall, and even Chase are out buying food for ya right now." Zuma begun drooling a little, it sounded like he was getting a feast later.
Zephyr started tickling Zuma's sides again. "Come on, I've got a surp'wise for you."
Zuma wiggled and squirmed on the ground as Zephyr continued to tickle him. Zuma began to pant as he looked up at Zephyr, who lowered his eyebrows at him. Zuma felt a tingling sensation run through his body as he realized what Zephyr was about to do.
Zuma opened his mouth wide when he saw Zephyr rear up, his thick cock throbbing under his chubby blonde belly. Zuma's mouth watered at the sight of it. He whined and squirmed playfully.
Zephyr took a deep breath, and then shoved his dick into Zuma's eager mouth. Zephyr braced himself against Zuma's fat-caked shoulders and slowly begun to thrust. Zuma wagged his tail and whimpered as he began sucking on Zephyr's shaft. Zuma's tongue swirled around the head of Zephyr's cock, licking all over the tip, and his ears perked up as he heard Zephyr moaning.
"This should help ease your hung'a pangs until, hmm, the food gets here." Zephyr moaned and sped up.
Zuma felt his stomach growl and wagged his tail even faster. He closed his eyes as he felt Zephyr's cock pulse inside his mouth. He began to swallow as fast as he could. The salty taste of Zephyr's cum filled his mouth as he sucked on it. 
Zephyr finished up just in time for Everest to arrive. She didn't bring any food though. "Hi boys, hope I'm not interrupting." Everest giggled and sat down nearby. Zuma licked his lips clean as Zephyr sat down too.
Zephyr smiled. "You're not inter'wupting anything. We're just waiting for the others ta get here."
The three of them waited patiently, or mostly patient. Zuma whined and squirmed on the forest floor, unable to do much else. Marshall arrived first, with Rocky close behind. Zuma wagged his tail and greeted them with kisses and hugs.
Rocky hugged Zuma. "You're so heavy, you fat pup."
Zuma wiggled his butt happily in response. "Heehee, thanks!"
Marshall and Rocky had brought several bags of fast food with the. Zuma was drooling, staring intently at them. "Did you guys w'eally buy all this for me?!"
Rocky snickered. "Well yeah, I mean, you deserve it, don't you? You're such a good boy, you deserve a reward. So go ahead and dig in."
Zuma wagged his tail happily and waddled heavily towards the bags. He pulled open the bag and began eating. He stuffed his cheeks full of chicken nuggets and fries. "Oooh, this is so good." Zuma entered a state of bliss as warmth spread throughout his body. Zuma could feel every inch of his girth, and was getting turned on by the sheer indulgence of it all. He licked his lips and lapped up the rest of the grease.
Zephyr watched Zuma eat and couldn't help but smile. He remembered how Zuma used to be before the potions. He would never eat this much. He was always so trim and athletic, with barely noticeable chub. Now he was so plump. It was amazing to watch Zuma chow down now.
Marshall and Rocky were watching Zuma as well. They stared in awe at his engorged body and lust for food. "Damn, Zuma. You're one big puppy now." Rocky laughed.
Zuma finished off the first bag of food and looked up at his friends. "Thank you so much, guys. This is so good." Zuma grinned and went for the second bag. The warmth and excitement spreading through the pup was what he lived for. He didn't want anything else besides a full belly and sex with his best friends.
Rocky noticed that Zuma was starting to get an erection as the fat brown lab's dick began lifting up his balls, extending behind him. "Oh man, Zuma. Looks like you're ready for round two."
Zuma's ears perked up. "What did you say, dude?" Zuma said with a mouthful of fries.
Rocky laughed. "Yeah, it looks like you're getting pretty horny already, and you're going to need a little bit more to keep that boner up. Good thing Chase is almost here with his share."
Chase showed up next, with a few bags of food. He saw Zephyr sitting beside Zuma, and gave him a kiss. He sat down beside Zephyr, and set down his food.
Zuma finished off his second bag and looked around at how much food was left, it was hard to believe that it was all his. He focused on gorging himself, building up his sex drive higher and higher.
"You're getting so big!" Everest wagged her tail as she watched her boyfriend stuff his face with fast food. Zuma wagged his tail in response.
The other pups were enjoying watching Zuma's feeding frenzy as well. "He's gonna blow any second now. Look at how hard he is." Rocky pointed towards Zuma's dick.
Zephyr nodded in agreement. "Now it's time for our fun. Ladies first, Eva'est."
Everest sat up and approached Zuma's huge dick. She stared at it before bending down and tried sticking her mouth on it. Zuma's cock was so thick that it was nearly bigger than the husky's whole head. She held it up in her paws and started licking his fat dickhead.
Zuma groaned, his ears perked up in pleasure as he felt Everest's paws sliding up and down his shaft. Though he continued to eat. His cock twitched as Everest slid her soft tongue up and down the length of what she could reach.
Everest moaned when Zuma's body shuddered, sending a thick stream of cum into his girlfriend's mouth. She swallowed the warm liquid and it kept coming. Everest could feel her belly filling up with Zuma's seed, and was soon grateful for the stretch potions Zephyr had provided the pups last night. Each pulse had Zuma moaning in delight through his mouth full of food. And each time he came, his cock grew longer and his balls grew larger. The changes were far more noticeable than they had been with the old potion.
Zuma continued to cum in Everest's mouth, and she eagerly swallowed it; loving the taste of his thick cum. A couple minutes later, Everest backed off with her bloated belly swaying beneath her. "That was so good, Zuma," she moaned.
Rocky smiled at his friends. "Alright, it's my turn.  The grey pup approached Zuma's cock, and began licking his fat shaft. "Mmmm, I love the way your cock tastes."
Zuma had finished off 4 bags of junk food and was feeling high. "You better be prepared for a big load back there, dude." Zuma said as Zephyr handed him a new bag.
Rocky licked Zuma's shaft up and down, getting it nice and slick. "Oh yeah, I'm ready for that." Zuma was so excited and eager to please his friends. Zuma moaned loudly as his cock began to throb. Rocky stepped back a ways and opened his mouth.
They watched Zuma's huge dick erupt and spurt thick loads of cum into Rocky's waiting mouth and all over his face. Rocky's mouth was quickly filled with warm cum and he quickly swallowed it. Rocky moved around to catch as much as he could before Zuma's dick settled down again; splashing in the puddle of puppy cum. By the end a few minutes later, both Rocky and the forest floor were covered. Rocky looked pretty pleased with himself as he walked back to dry ground to lick himself clean.
Zephyr looked over at Chase who was lying down, jacking off to the scene before him. Marshall was doing the same. Neither of them were all that interested in the gluttony, but Rocky's cum shower was definitely hot. Zephyr was getting excited, as it was his turn to play with Zuma next. He watched as Zuma devoured bag after bag of food. Zephyr used the other two pups to see if the new potion really did what he hoped for, and it did indeed. Zuma definitely came more for Rocky than for Everest. Which means if Zephyr just waited until Zuma had nearly finished eating, he would be in for a big treat.
As Zuma ate, that comforting warmth felt like a sauna without the sweat. He could feel his bloated stomach busily churning away at all the food he was stuffing it with. His genitals were tingling, aching to be touched, but when he looked up Zephyr was just sitting there looking cute.
"Dude hey!" Zuma said. "Mmm, I need attention ove'a here."
Zephyr just giggled and trotted over to Zuma's side. "What can I do for you?" Zephyr poked at Zuma's overstuffed belly.
Zuma whined. "Stop fooling around, Zephy'a" driven by his lust, the lab went back to finishing his last bag.
Zephyr giggled again as he stepped onto the cum-soaked ground behind Zuma. Zephyr tenderly licked at one of Zuma's balls, which were now towering over him and Zuma. Each lick made Zuma shudder, and Zephyr had to be careful to not set him off just yet. Zephyr then moved to measure himself against Zuma's dick, and it was as thick as Zephyr was wide, and Zephyr was a chubby puppy himself. Zuma's dick had also grown twice as long as Zephyr.
When Zuma whined again after finishing his meal, Zephyr hurried up to pick up Zuma's dick. He looked at it, and saw it was leaking precum. "Goodness, this thing has gotten so heavy," Zephyr looked at Rocky. "I need help holding up this monster cock." Rocky was being licked clean by Everest, but he rushed over. Rocky crawled underneath Zuma's dick and held it up high with his back.
Zephyr stood up on his hind legs and licked his lips before beginning to stroke Zuma with his tongue. Zuma's cock twitched and began to throb as Zephyr's tongue worked its magic. Zuma was already on the verge of blowing, and Zephyr's soft tongue and the motion of his licking were pushing him over the edge.
Zuma howled in ecstasy as he shot his load; Zephyr just barely managed to get his muzzle over the opening in time. Zuma's cock pulsed and throbbed, the sheer force of Zuma's orgasm making his cock pump cum at an alarming rate into Zephyr's mouth. Years of practiced gluttony meant the chubby pup knew how to keep up, and he greedily sucked down the flood of cum.
Rocky saw that Zephyr was hard and pushed his head under the goberian's belly to suck off Zephyr. Zephyr could feel his belly rapidly swelling up as Zuma's orgasm continued. Zuma's moans of pleasure were music to the pups. All the built up heat from the potion had turned into such excitement, Zuma felt like he was on a rollercoaster. Zephyr came to Rocky's blowjob as he kept swelling, his belly pushing Rocky away and resting on the ground.
It felt like forever, but it was only about five minutes before Zuma stopped cumming. The heat and pleasure finally started to settle down. Zephyr rested on top of his swollen belly and Chase pushed him away from Zuma's backside as the goberian licked his lips clean.
"That was fantastic!" Zephyr purred. He sat there for a moment relishing the experience. Zuma laid on the ground, his belly still swollen from fat and food. Rocky was standing next to him, licking his own cock clean. He had a goofy smile on his face. He looked up at Zephyr, who was still laying on his belly.
"We left the clearing in a big mess, didn't we?" Marshall laughed. 
"Ah, the rain'll wash it away," Rocky waved at Marshall's comment. Everest went back to trying to lick the cum sticking to Rocky's fur, but it had mostly dried at this point.
Zuma yawned. "I think I'm w'eady for a nap after that. Zeph'a, I hope you have a potion w'eady to get us mobile again... W'ight?"
"'course I do," Zephyr yawned. "Won't cure your addiction, but I think I've figured that out too." Zephyr and Zuma went to sleep, Rocky wanted to join them but Everest dragged him back to the Lookout for a shower. Chase and Marshall went off to shower too. It was a fun morning, but things had to start going back to normal once the bloated pups woke.