Submitting to instinct.
(First time uploading a story onto this site, so try an take it easy on the critisizm, I'm pretty easily discouraged. Anyways I hope its worth your time).
Her name was Autumn, her features well suited to her name. With hazel eyes and silky waist long hair as bright of red as the leaves that dropped in fall. She was attractive to say the least, but far from stuck up. She lived on a ranch all her life, doing everything from milking cows to breeding horses. Just two days ago her parents left for vaction, leaving her in charge for the week. She didn't mind, she loved what she did, and she always had a drawing towards animals. Especially Tank, the ranch's pit bull. He wasn't the typical farm dog, but he kept the coyotes away with ease.
Tank was brindle, short but study, his muscle were tone and outlined his strong body. They had only gotten him weeks ago, when a neighbor decided she was moving and had to get rid of him, but even so, he was always eager to keep Autumn company.
"Come'mere boy!" She yelled from barn. Tank came running in full speed nearly knocking her over. She kneeled down and rubbed his ears as he licked her face. "Good boy." She smiled and stood back up and continued to pile the hay into the wheel barrow. As she knealt down she felt Tanks paws catch her hips, "No, Tank, down. Stay down." she pushed him off and threw the last leaf of hay in. "what is with you?" She looked at him noticing his sheath was hanging low, thicker then usual. She quickly turned view away. N_o!...what is wrong with you? Stop thinking like this, it's a dog, thats not right..._ Her thoughts were quickly getting to her, she liked his paws gripping her, and she kept thinking about his thick sheith.
She sat down on a hay bale beside her and patter her leg for him to come over, thinking to herself that he surely wouldn't try it again. Tank trotted over quickly with his tongue out nuzzling between her legs before jumping up and locking his forelegs around her thigh and thrusting his hips slowly. "Tank.." She pushed him down again, he tried to jump back at her as she held him back.
_ No one would know... An its not like he'd be taking my virginity if I let him at my ass... I doubt he would.._ She tried to convince herself not to, but the tingle growing between her legs was clouding her thoughts, and Tank could smell her getting wet.
He shoved his muzzle back between her legs trying to lick through her short, she could feel his huge tongue so eager to please her. _Might as well give him a chance.. He's getting fixed next week... _ She reached down under him curiously, feeling his warm sheath bulging, and at the top he was wet with his pink tip starting poke through. He reacted to her hand with gentle thrust, he wasn't giving up.
So she stoood up, unbuttoning her shorts and slidding them off nervously, then stripped off her small, black lace thong, and got down on her knees. Tank was ready and so was she. She leaned over putting her elbows and chest against the hay bale then parted her legs slightly, without hesitation, Tank lowered his head eagerly licking her pussy, her wet musk permeating the air around them driving Tank wild.
She shivered to his tongue slidding up her, the electric tingle coursing through her veins. Quickly though he thrusted himself up tightly wrapping his front legs around her waist, his clawing scratching into her hips made her whimper in pain, but soon the pain turned to pleasure and Tank started to hump.
His pink tip poked her firm ass a couple times before she spred her legs further, reaching back to help guide him. He thrusted towards her ass while in her hand as she placed his pink tip to her hole. It press in just barely at first but as soon as Tank felt the tight entrance he shoved himself in. "Ahh! Damnit Tank..." She yelped as he pressed into her, his sheath slidding back as he pounded into her, his dick pulsing and continuing to grown thicker and thicker.
His instincts kicked in and his hips slammed back and forth hurridly his balls slapping against her pussy almost teasingly. Autumn began to moan out, digging her fingers into the hay as the massive pit bull slammed his cock into her ass while cutting up her hips in a pain pleasure.
She couldn't handle much more, she could feel her pussy dripping wet as Tank pounded into her ass over and over, the feeling became more intense, and was begining to feel tighter.
Tanks knot was swelling up outside of her to the size of a large lemon and she could feel it pressing against her as he thrusted forward, she tried to relax herself but before she had time to do so Tank press his hips up squeezing his knot into her tightly, she screamed as she felt herself build up to a high like no other and Tank's cum began to squirt deep inside her, filling her up with his hot, sticky breeding.
Her insides were pulsing with electric pleasure, and her nipples tingled as the grinded against the hay while she neared the top over her climax. Tank turned over knotting with her, tugging away slightly, his dick rubbing inside her brought her over the edge as her pussy convulsed, she could barely catch her breath.
She had plenty of time to though as she remained knotted with Tank for nearly twenty minutes, she panted alongside him and thought to herself. Damn, there is no way I'm letting my parents fix him..