Megan was already the better half of two weeks into this season’s heat. If the seemingly never-ending flow and previous experience held true, she had another week to go. Her nipples, breasts and cookie were swollen to twice their normal size, the cramps came and went seemingly of their own volition.

All of the above made getting her class work done difficult enough, just on top of all that Megan was sooooo horny. After getting home from classes, where nearly every male in class or the hallways seemed to have their noses twitching in her direction. Megan rushed up to her room, locked herself inside and practically ripped off her own clothing. Then figuratively bent herself into a pretzel licking her own cookie, that not being enough she grabbed a fur brush from the nightstand and used the wooden handle to pleasure herself as she slowly licked her swollen vag and clit.

After just a few minutes Megan squirted hot grool mixed with menstrual blood and sighed with relief, her tail curled and she finally felt like she could breathe. Even if her favorite brush’s handle now looked like a murder weapon.

Megan grabbed a tube of sanitary wet wipes off the desk in her room, pulled one out and wiped her muzzle clean then the grool and blood off the brush handle. Then pulled a second wipe and wiped her swollen privates, before changing her pad and pulled her panties back up. Megan tossed the old pad and wipes into a plastic grocery bag tied it shut then put it in a second bag before doing the same.

The whole routine was ridiculous, but her younger brother Max who Megan had to share a bathroom with LOVED getting his sticky paws on her pads and wipes. Megan noticed her dad spent a lot more time out in the garage or smoking his smelly cigars out on the back patio when she was in heat. But Max, a year younger than her, now a junior at the same school, would pull her pads out of the trash, sniff or even eat them, nasty little twerp.

Megan had smacked him across his knobby head and given him a swift kick to the tail more than once after he had tried sniffing under her tail when she wasn’t watching or was busy doing the dishes after dinner.

Megan just had to be careful, Max was kind of a runt for a dog but he was still a lot heavier and stronger than a bitch. Their parents were just the wrong side of useless, when it came to these matters. Instead of getting Max to stop trying to sniff under her tail, pull down her pants and lick her cookie at any opportunity or dig her pads out of the trash to sniff or eat. They would just separate the two and say the all so classic, “ dogs will be dogs.”

During last fall's heat, she had forgotten to lock her room while she was in the shower. When she padded back into her room, fur still damp and only wearing a towel. Max, having been hiding behind her door, had rushed her. He was already bottomless, his tiny red rocket half out of his smelly Dorito dust covered sheath.

Max had ripped off her towel and before she could fight, bite or rip a whisker right off the side of his stupid muzzle. He overpowered her, turned her facing away from him, bent her over her dresser, painfully yanked her tail up. Then holding her wrists Megan felt his hot wet tip poking poking poking at her Vag. Megan yelped in pain and surprise as Max humped and his red tip jammed deep into her asshole.

Megan’s yelp, surprised them both, Megan took the chance. Twisted around which popped her brother's cock out of her ass and kicked him square in balls as hard as she could. Her right paw connected directly with his nutsack lifting him damn near off the pink throw rug.

Megan yelped even louder, thinking she might have just broken her paw on Maxs nuts and hopped around naked on one paw for a few moments. Max for his troubles had all his breath explode out his maw as it felt like his nuts had just been kicked into his throat! He fell over sideways curled into the fetal position, not able to do anything other than softly wheeze and tried to not pass out.

Megan after she was pretty sure she hadn’t broken her paw, growled and gave her little bro a kick to the ribs. Just not too hard, more to get him moving and yelled for like the millionth time “ GET THE FUCK OUT OF MY ROOM YOU PERV!”

Max had scurried out the door on all fours like a feral and puked his guts out in the toilet before closing himself in his room the rest of the night. When their parents got home from work, Megan didn’t say a word. She figured a kick to the nuts that hard was a pretty strong deterrence. And they wouldn’t have done anything anyways. They probably would’ve been mad at her for hurting her little brother, the freaking weasel.

Max besides walking with a serious limp for a week, it apparently worked. For the rest of Megan's heat, Max stayed away from her, not even making eye contact, just going to his room and closing the door without a word. After her heat finally subsided life went back to normal, the two weren’t super close or anything but got along well enough. Megan liked hanging out with friends, socializing, listening to music and hanging out on social media.

Max had friends over occasionally, but mostly played his online video games, virtually, shooting up a bunch of terrorists and rebels trying to destroy modern society. Make all predators eat salads or equal rights or something stupid crap like that. Megan could usually hear Max screaming through the voice chat like some military commander usually along the lines of “Kill those bastards” “ fuck those grass eaters” etc etc.

Megan just rolled her eyes and put on her earphones, he told all those losers he was a 20 something, 6 foot 9 or 7ft 4 from ear tips all black wolf super predator from one of the still intact big cities, maybe New Boston. She guessed a 17yo, 5,6 border collie from flyover country didn’t have the same ring to it while mowing down virtual herds of herbivore enemies.

This heat other than a few sniffs and some panties going missing Max hadn’t tried anything. Megan after getting most of her homework done and using one of her special toys she ordered online decided to say screw the weight. They had some fresh lamb guts in the fridge and she was up for a late night snack before bed.

Megan hadn’t heard Max or her parents in at least an hour, the whole house was probably asleep. Megan got out of bed, padded quietly across the room, opened her bedroom door, turned left to head to the kitchen. Just before she took two steps the laundry room door opened up and Max the sneaky little shit yanked her by the arm and scruff into the room.

Once again before she could even cry out or kick him in the nuts again. Max, sucker punched her right between her second row of tits. It wasn’t a particularly vicious or hard blow but for a few moments Megan gulped for air feeling like she couldn’t breathe.

In those few moments Max pushed Megan against the wall, yanking down her shorts, grabbing her arms holding them with what felt like vice grips. Only releasing his right hand to pull her panties to one side and guide his red pointy cock inside her wet pink swollen folds. Megan tried to push him off, squirm left, or right or bring a leg up into his groin.

He was just too close, he was already inside her. Megan felt the heat and slickness of her brother's cock penetrate deep inside her pussy, worse yet she could feel it swelling and bared her teeth.

“ Get off… get your smelly nasty dick out… you … aaaaaah ahhhhh… MAX DON’T you… aaaaaah no don’t you knot me! I’ll bite the ever living shit … awoooooo … out of you!”

Max just bared his teeth back, panted, drool hanging off his chin as he ran a paw across, up and down her breasts.

As Max humped his sister, his cock getting harder and harder, after a few seconds 10-15 at the most. Megan could feel the hot squirts deep in her belly and the tightness in her pussy. It almost felt good the cramps were gone at least for now and she knew several things all at once.

First she was hopelessly knotted to her annoying perv of a little brother in the laundry room of all places.

Second from the warm wetness and throbbing she felt in her belly she was now full of her brother’s hot sticky very fertile cum and would be until his knot relaxed.

Third, she didn’t want to be pregnant, muchless pregnant with her brother’s pups. But the breeding laws were strict at the best of times, predators were outnumbered 200 to 1. No exceptions were made not even for… for gods help her, incest or inbreeding.

Megan moaned as Max tried to pull out and his swollen knot held them together as he came again deep inside her. His seed well on their way to Megan’s eggs.

Max still panting and out of breath, finally let go of his sisters wrists and breasts

“ Ummm sis… ummm I’m kind of stuck?”

Megan narrowed her eyes and glared “ You ... you think?!"

Max started to reply but just softly moaned as he ejactutated deep into Megan's womb for the 4th or 5th time

Megan growled between gritted teeth "If you got me pregnant I'm going to eat your birth certificate and Pokemon cards!"

A very special thank you to my good friend and amazing artist https://www.furaffinity.net/user/himeragoldtail. She really went above and beyond with this one, as she usually does.

If you enjoyed the art or story, and possibly want to see more of Megan and her new mate Max, please leave a comment below, and I will take that into consideration on the next project. And as always I always appreciate any general feedback, good, bad, and the ugly.