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"Come on, Milo!" Ten year old Harry pushed back his longish fair hair and scrambled after the family's German Shepherd. He often took Milo for walks in this wood, which wasn't far from his house. It was a nice place to take the dog and let him go off the lead, and for Harry to get some privacy. He frequently combined his dog walks with a wank, leaning against a tree and tugging on his two and a half inch prepubescent stiffy. But this time he had something more than masturbation in mind.
Milo circled back, tongue hanging out, playful and energetic as ever. German Shepherds needed lots of exercise and stimulation, so he was the perfect dog for Harry to enjoy running around the woods with.
But lately, that wasn't the only thing he'd been doing with Milo. Milo had a huge doggy penis, bright red and pointed at the tip, and when Harry masturbated in the woods, Milo's 'lipstick' started to slide out of its sheath. The first couple of times he'd just giggled, but Harry had grown to expect Milo to get excited by smelling his owner touching himself.
Then Milo had started jumping up while Harry was in the middle of jerking his little stiffy. Harry had initially pushed him away - but then he'd felt the huge canine erection pressing against his leg. When Milo jumped up again and put his front paws on Harry's shoulders, Harry had steeled his determination and grabbed Milo's exposed penis with his other hand. Dog and boy had come off together, with Harry awkwardly jerking them both.
They did that most days, and had been for more than a month. It was great - Milo really was the best companion a boy could ask for. But Harry had an idea for a new game.
He threw the manky old tennis ball for Milo a few times, but his little willy was stiff in his shorts and he was too excited to wait. He pulled down the elastic waist of his shorts to just underneath his buttocks, fully exposing his little two-inch erection and tiny tight ballsack to the air. Milo immediately stopped and trotted up in front of him. He knew what was coming.
Harry gave himself a few tugs to soothe his tingling willy. He was about to do something he'd read about, and had kind of practised, but he was nervous. Sometimes when he masturbated in bed or in the shower, he put stuff up his bumhole - his fingers, a pen, the handle of a hairbrush - and it made him come really hard. So putting Milo's willy up there should feel amazing for both of them! Harry had a big book all about different breeds of dog and how to care for them, and it included a bit on breeding, including pictures.
He touched himself in his bedroom while looking at those pictures and reading the descriptions of 'the dog mounts the bitch' and 'the base of his penis swells and the dog ties with the bitch'. He was a bit scared of what the book called the 'knot', the swelling on Milo's penis that Harry had already seen because it slid out of his furry sheath when he was jerking Milo off. But the idea of being 'bred' by Milo was too exciting not to try.
Milo pranced eagerly, then dived forward to lick Harry's genitals through his fingers. Harry shivered. He was scared of Milo's teeth, but the huge doggy tongue on his stiffy felt really good. His little penis was already throbbing like he could come any minute. He put down his bag and got out the lube with nerveless fingers. He'd already lubricated his boyhole before they came out here - he'd fingered himself so thoroughly in the bathroom that he'd had to jerk off frantically til he came for the first time that day - but it never hurt to be prepared.
Milo licked Harry's penis again. Oh, that felt great. Harry's two-inch stiffy twitched under the dog's tongue.
"Good boy," Harry whispered to the dog. It was important to praise dogs for doing what you wanted them to do, the books all said so. And Milo was very well-trained.
He undressed totally, putting his t-shirt and his shorts and underwear in a pile. He did leave on his shoes, though. There was something about being completely naked in the forest that was a bit unsettling. Milo was still prancing around him, occasionally licking his stiff penis. It was tempting to let Milo really go to town licking his privates, but Harry was determined that he'd have that canine length inside him today. He'd been fantasising about it for weeks and had finally plucked up the courage.
Awkwardly, Harry got down on his hands and knees on the leaf-strewn floor of the forest. Milo nosed at his bum and licked his little balls. Harry's little stiffy was as hard as ever as he exposed himself to the dog's tongue. That's good, he told himself, that's how the boy dog shows the girl dog he's interested. He didn't have a tail to put to one side, but he pushed his little bum in the air to show willingness.
Milo took the hint. He was a clever dog, after all. He got up on Harry's back and mounted him. He was a big dog, and Harry had to brace himself against Milo's weight. Milo's front paws went round his waist, just as Harry had seen in the pictures in his book. His little stiffy jerked with excitement.
There was some scrabbling and shuffling as the tip of Milo's willy rubbed all over his balls and perineum. Harry thought he might have to help direct Milo's penis to his hole, but just as he was reaching back blindly, Milo found it.
The dog's pointed willy prodded at his entrance. Harry barely had time to take a quick deep breath before Milo pushed it in.
Harry yelped as the dog's penis penetrated him. It felt weird and slick, and it slid into him easily. His knees slid further apart on the ground as Milo leant more of his weight on him. He heard Milo's back legs scrabbling for purchase on the leafy ground.
But Milo started thrusting almost as soon as he'd got his penis inside Harry. He thrust in short hard bursts that rocked Harry's body back and forth. Harry gasped and fell forwards, his arms collapsing beneath him. It felt - oh god, it felt intense! This was bigger and harder and hotter than his fingers! The dog's whole length invaded his anus in relentless jackhammer thrusting, hitting parts inside Harry that he hadn't even known existed. This felt so much better than when he tried to do it himself!
The dog's penis hammered in and out of him. Harry wailed on the ground, pleasure exploding through his prepubescent body. His tiny stiffy jerked untouched between his legs.
"Uh, uhhh," he moaned into his arms, the dog's violent thrusts rocking his whole body. Milo's furry pelvis hit his buttocks over and over in an unmistakable dirty rhythm.
He moaned and let the dog fuck him hard. Milo's thick red doggy penis pounded his hole and made tears come to his eyes with the intensity of the pleasure that built inside him. He couldn't keep his voice down, it felt so incredible. He was glad no-one ever came here except him and Milo.
He could feel Milo's knot starting to grow at the base of his penis. He was going to put it inside Harry! Harry trembled and tried not to tense. He told himself it wouldn't hurt. Milo was thrusting away on top of him and panting, and Harry's two-inch stiffy was tingling like it was about to explode at the feeling of that huge doggy penis ravaging his insides.
With a firm shove, Milo thrust his swelling knot inside Harry's virgin boyhole. Harry gasped as it rapidly swelled further inside him, forcing open his sensitive rim. Milo kept humping him in fast, jabbing thrusts, but they were locked together by the knot.
Harry shuddered and groaned as he felt the first spurt of Milo's come inside him. Milo kept humping, rubbing Harry's sensitive rim with his fat knot. Harry whimpered as he felt his toes curling and orgasm about to hit him. His legs jerked against the overwhelming pleasure.
He came hard, shuddering and clenching around the huge doggy penis and knot inside him. His orgasm was made even more intense by being impaled on Milo's cock. He used the naughty grown-up word in his head: Milo's cock. His family dog had a cock and it was inside him, filling him up with canine come. Harry whimpered and trembled through a dry orgasm that made his two-inch stiff cocklet twitch violently.
When it was over he slumped to the ground. Milo had stopped humping and was just lying on top of him, but he was still incredibly sensitive inside, and Milo's small occasional movements were setting off aftershocks of pleasure that were almost unbearable in the wake of his orgasm.
Milo licked Harry's sweaty neck affectionately. Harry smiled.
"Good boy," he whispered. You were supposed to praise dogs for doing what you wanted them to do.
Milo started moving, pulling on the knot inside Harry, and Harry gasped as it set off another cascade of pleasure. Was Milo trying to pull the knot out now? No, Harry remembered: the dogs turn after mating, during the tie, so they're back to back. Harry felt Milo's paw scrape his lower back as he twisted and brought his leg over. All the jostling of the dog's huge cock inside him made his vision white out like he was coming again.
"Oh, uh," he whimpered helplessly as his tiny willy jerked and his balls squeezed tight again. It felt like he was going to wee!
He did. The dog's huge cock was putting pressure on his bladder and it gave out at the shocking pleasure rippling through his lower body. Harry moaned in embarrassment as his tiny willy started to wee a stream of urine that spattered loudly on the leaves between his thighs. Wee-wee gushed out of him to soak the ground.
They panted together, Milo and Harry, as Harry's bladder finally emptied with a few last trickles. Milo's cock released another spurt of come inside Harry. He's trying to breed me, Harry thought. His head was swimming.
He'd managed to scrape together a couple of braincells by the time he heard noises in the woods. At first he dismissed them as animals, of which there were plenty in the woods: he'd often seen foxes at dawn and dusk.
But it wasn't foxes, or hedgehogs, or even a badger. That was the sound of footsteps crunching over dried leaves. There was another person in the woods, and they were headed straight for where Harry and Milo were tied together!
It was no use - he was trapped by the dog's knot inside him. The footsteps came closer and closer. Harry held his breath and tried to be very, very quiet. Maybe the person would pass by onto a different path.
"Hey, you alright!?"
Harry looked up into the shocked face of a stranger. The man was about Harry's father's age, going a little grey in his stubble and around his temples, and he was looking between Harry and Milo with an expression like a series of light bulbs was going on inside his head. Harry was mortified. How could they be discovered? Nobody ever went in here except him and Milo!
"Well," said the stranger at last, "I've been walking in these wood for three years now, and I've never found a boy getting mounted by a dog before."
Harry said nothing. His flush was crawling down his chest. Milo shifted his weight from one paw to the other and it sent a jolt of pleasure through his prepubescent body. The man looked him up and down, really taking in the bit where he was joined to a dog by the private parts.
"Looks like he'll be tied with you a while yet," said the man. His hands were opening his belt. "That's a nice thing to find in the woods, very nice." He took out his willy, which was half-erect and stiffened further as he stroked it.
Harry could hardly believe it. The man had found him being bred by a dog, and he was just...he was wanking! He was stroking his penis while walking around Harry and Milo to get a good look at where Milo's canine willy was going inside Harry's bum.
"You're a dirty little boy," said the stranger, and despite the words his tone was approving. He jerked his eight-inch erection - his cock, Harry corrected himself in his head - faster. "Tell you what, I'll fuck you when the dog's finished with you. Bet you'd like that."
Harry just panted, open-mouthed. He no longer felt he knew what was going on. He didn't have control of this situation. He was trapped by Milo's knot in his tight boyhole.
"But now, you just open wide..." The man came closer and Harry, impaled on the dog's cock, couldn't move away. He knelt in front of Harry, so close that Harry could see every vein on his thick red cock. "Mm, that's right." The man's stroking sped up again. Harry had never seen a grown man masturbating, never even seen one erect. The musk of the man's cock filled his nose.
Harry could only watch as the man's throbbing erection jerked in his hand and the man groaned and started to thrust his hips forward into his fist. He knew what had to be coming, but he couldn't believe it.
White stuff spurted out of the man's erection. Some of it landed on Harry's tongue. It was bitter and Harry spat it out in disgust. But more of it landed on Harry's nose and cheeks and chin, spattering his face with the stranger's come.
Against his will, his little cocklet twitched. A funny tingly feeling was starting in his groin, and he knew what it meant. The man's huge willy was softening, but he'd promised to put it inside Harry, hadn't he? To fuck him...A shiver ran through Harry's prepubescent body.
"Now that's hot," said the stranger, looking at his come smeared all over Harry's face. "Do you often walk your dog in these woods? I bet we could have a lot of fun together..."