Clop, Clop

The tunnels of the Diamond Dogs were often dark and dingy places, though with the advent of extra attention from mainstream Equestria they were often more often decorated with modern objects and made with more care and precision. In the mine tunnels electric lights illuminated the many branching passages, providing a steady illumination. The long, straight tunnels were normally sill and silent, when not filled with the sounds of work. But in that particular tunnel, it rang with howls and grunts, and the occasional screams of a female voice.

At the junction of several of the downward tunnels was a huge, well-constructed chamber that bore the marks of active excavation. It was lit well with many electric lights, which illuminated many carts piled with gems, sparkling gloriously. Also in the room were a number of Diamond Dogs, of many different types, including spear-wielding Dig Dogs in full armor. They were civilized Diamond Dogs, meaning they were clean and groomed, by and large, though mildly begrimed by the actions of being so deep in the earth. In the center of the room was a mare, an earth pony. She was a pale pink color, with a golden yellow mane in bouncy curls. Her body was very pudgy, thick and full and matronly. On her flank was a bouquet of white roses. She was also slightly dirty, sprinkled with dust, rolling around on a padded cloth. She was splattered with semen, with a Diamond Dog climbing off of her and shaking his penis at her, flicking fresh ejaculate onto her body.

She rolled slowly onto her belly and rose up on shaky legs, her rear end coming up more quickly than her front, which seemed to act like a beacon. A shriek poured from her mouth as an especially large, joweled type with pale brown fur leaped onto her hind end. One hand slapped her plump rear end, the thick digits making the heavy hind shake about, while the other stroked his unique organ. Unlike the four-legged creatures of Equestria, the Diamond Dogs lacked a tethering sheath, letting their straightly-cylindrical members hang down and sway freely, with some rising as blood engorged them.

He ground and mashed his rounded, blunted head against the mare’s lips, which let out a small running trail of oozing whiteness. He made certain to firmly and thoroughly rub and grind the lightly-pulsing flesh over the mare’s clit, making her groan and shudder all the more, her trembling forelegs losing strength and making her fall forward, rear end up in the air though hind legs still trembling as she was teased and massaged by the laughing dog, who was egged on by his guffawing fellow dogs.

After a long and complete tease of the ball of nerves, he slid the rounded head upwards, mashing the thick lips down, smearing around the evidence of prior partners then pressing right in the center, thrusting his hips forward with a growl and grunt, bringing forth a short cry from the mare beneath him as her lips were forced open and down into the passage that was trying to squeeze back down into original tightness. She wasn’t gaping by any means, but was very obviously well-used.

The huge hound howled out, thick fingers grasping hard at her fat, rounded flank. He used his grip to pull her up towards his hips, spreading her passage out again, undoing all the work she had done recovering from the previous activity. She cried again as the distinctly-alien penis pounded down deep into the warm clutching of her pony passage.

Another of the surrounding dogs came up, lightly panting as he presented his erect pole to her. He was of the shorter breed, jowly as well, and rather wide. The mare didn't even seem to see him. When her eyes were not closed, she seemed to have a glazed, distant look in those green eyes. Taking advantage of her occasional cries and groans he stepped forward, took her head in his hands and pushed himself between her lips. The mare gave a choke and gurgle, but did not seem to fight against it.

The smaller dog rasped a harsh laugh and placed his hands on his hips after he had his organ firmly and securely wedged into her mouth, no longer needing to hold onto her head. He did his best to stand looking proud of himself, despite his diminutive stature. He also tried to maintain his composure, giving small, unconcerned thrusts of his hips into the willing, drooling maw. But that was not at all easy to do, his tongue slipping out to pant as the pony's tongue slipped and squirmed around on the faintly-throbbing pink erection. In addition to that there was the loud, incredibly lewd sucking sound, emerging from the combination of free drooling and constant turning of her head to come at the dog dong from all angles.

In the rear, the taller dog was settled into a heavy, rhythmic thudding of his hips against the pony's big, jiggling ass. His huge hands were settled around her midsection, squeezing at her warm pudge as he used his grip to move her at his pleasure. He pushed her forward, into the body of the other dog, as he drew his hips back, then pulled her towards him as he thrust forward, his hips meeting her backside with a thunderous, meaty slap and light jiggle of her cheeks.

“Mmmm, pony is very tight. Good muscles to still be tight after so many dogs.” The tall dog grunted out his comment, continuing to give powerful thrusts and thugs against the mare. His organ ached and throbbed desperately deep within the squirming, double-taken pony, spitting warm preseed against the clutching, rippling walls of her insides.

The see-sawing spit-roasting continued with wild cheers from the assembled crowd and even barking laughter from the thick-bodied Dig Dogs. The smaller one went off first, yipping loudly and howling out, hands on his trembling his leaping off to grab the mare's head, keeping her in position as he directly splattered gooey dog slime down her throat and right against her tongue. He slipped out with a few last spits of the organ spattering on her face. Her sticky tongue, hanging with the ooze just placed on it, sloppily licked her lips as she heaved a sigh, which gurgled through the semen not yet swallowed.

As his smaller fellow fell with a grunt, the larger held the mare tight and jackahmmered his hips in hard against her fat rear end, adding a merciless spanking to her hard, unrelenting breeding. He did not last, fingers grabbing her hard while his head was thrown back. His howl echoed around the huge cavern, filled with the power of his orgasm. It felt, to him, like he was blasting her with a firehose, gushing wave on creamy wave of canine spunk into a decidedly non-canine receptacle.

The huge dog pulled out with a deep wurf, staggering back slightly and then falling on his rear, to the amusement of the other dogs around them. The mare slumped slightly, over-filled yoni showing a peeking glob of clinging seed, like a pearl. The tightening muscles forced out more and more until the messy creampie flowed out and splattered on the ground. She stood up on her shaky legs, looking around with bedroom eyes. She licked her sticky lips once again and moaned out, “More...”

A look passed between the gathered dogs, and their laughter choked off and died. Concern filled the cavern. By the looks of their crotches ever able-bodied canine had given the pink mare the business at least once, and some were panting hard enough to have appeared to have gone twice. “P-pony is strong...” One of the medium-sized one said, with a note of fear.

“Yes... too strong...” The smaller dog that had just been serviced responded, watching his issue being smeared around, like lip gloss. “What do we do?”

The medium dog wurfed heavily and looked at the two standing Dig Dogs. “Need more help.” He whistled sharply, the thick guards suddenly snapping to attention. “Dig Dogs! Service pretty mare!”

The huge gray-brown goofballs eagerly cast off their helmets and threw aside their spears. They revealed large eyes shining with desire, and heavily-jowled faces, giving them a bulldog look. They also stripped off their armor, the heavy steel plates clanging to the ground, revealing rippling, powerful chests, like slabs of cut rock. The stretched and howled in liberation, flexing revealing almost more muscle than should have been possible. They also thrust their erect organs into the air, well-prepared by watching the previous encounter, seeing the insatiable mare taking on their fellows and remain unsatisfied. They had to restore the honor of the colony.

The huge hands of the two dogs smeared their free-flowing preseed along their erections, highlighting the thick, standing network of faint veins. The engorged organs pulsated with need, hungry for the mare's body. The two drooled freely, slapping their thick tongues around their mouths and flinging saliva all around and onto the mare.

One of the huge dogs crashed heavily into the ground, like a stalactite during a cave in, right beside the mare. He reached out and under her, pulling her up and over atop him. She looked down with lust-fogged eyes, dipping her head down to capture his lips with her own. She had succeeded in completely cleaning her maw of the load from the prior dog. She was good and clean when the two began to sloppily make out. The dog tasted of “freshness”, with a hint of charcoal demonstrating the cause of the taste; the pony mare tasted like mint, the lingering effect of undiminished mouthwash.

Tongues dueled in both mouths, pressing against cheeks and trading saliva, the liquid running from between their joined lips as they slid and pressed against one another. One thick hand wrapped around her back, pushing her chest down against his own broad, flat pectorals. His other hand reached behind her, grasping his thick pole and pulling it up, pressing it firmly against her used passage.

The thick glans parted the lips with a soft squish, and worked to spread the passage, the re-tightening muscles fighting against the swollen rod. And the stiff length was winning without even trying. He pushed forward with a kind of inexorable destiny, burying himself with short thrusts and gentle shoves of her rear end, to force her hind end down a bit at a time.
He made it down to the hilt, fitting into her like a glove. His whole, pulsating girth reached right to her furthest depth. He then pulled her up a little bit and gave himself the space needed to thrust into her, giving light pumps of his hips. He then gave her hips a soft slap, striking over her Cutie Mark, and reached back around behind her with both hands, spreading out her rump to expose everything between the cheeks.

The Dig Dog standing behind her spit rather loudly, a very thick and slippery blob of saliva splattering directly against her puckered anus. His fingers came in and gently massaged the slippery liquid against the tight opening. The thick digits were a bit too thick to really slip in and spread it around, but he still tried, spitting more to get plenty of fluid down there to provide a good pool for lubrication.

He nudged the tip of his rounded, thick penis against the puckered passage, pushing hard against the muscular ring. He threw the power of his hips behind it and the weight of his thick body to the task of forcing the rear passage wide open. As the matter was pushed to the fore, the mare broke her kiss with a slightly-muffled cry, the noise interrupted by the tongue still stuck in her mouth, which slowly slipped out with a sloppy slurp.

She continued to cry out, head thrown back and body shuddering wildly as the girthy pole plunged deeper and deeper into her hind end, the dog below her adding to her pleasure by firmly thrusting into her body, rocking her with each stiff pump into her warmly-massaging sex. As she adjusted to the feeling of the double penetration, her cries slowly tapered off, falling into a whimpering little moan.

The exhausted dogs surrounding the scene started to nod to one another and exchange relieved smiles. But as the two Dig Dogs set to work, thrusting in and pulling out, going good and deep each time they moved, the mare threw her head back and shouted something to make the dog's faces fall. “MORE!”

In another tunnel, just off from the large cavern containing the great mare-pleasuring, there was a great flurry of activity. There was a stallion on the floor, on his back, casually straddled by a female Diamond Dog, one of the taller types, though lacking jowls. Behind her was another stallion taking up her backdoor, while a third was in front, filling her short muzzle. Lastly, two other stallions shuddered hard as her hands squeezed and stroked their trembling, leaking shafts.

It wasn't long at all before all the stallions gave loud, shuddering whinnies, the stroked males rearing up and all the others giving bounces of their bodies as they unleashed stallion spunk inside of the mare, and all over her face, the squirting lengths aimed carefully at her face, mouth open and pulled back a little from her partner's squirting erection.

Back in the cavern with the large collection of dogs, the canines whooped and clapped encouragingly at the Dig Dogs desperately and firmly riding the needy earth mare. Their heads turned at the sound of echoing clops from a side-tunnel. Out of that opening emerged the five stallions, looking winded but incredibly happy, and the Diamond Dog female, still slightly sticky with semen. The stallions calmly and willingly walked over to the carts, letting themselves be hooked up, and then trotting off with casual whistles and happy hums.

The female looked at the stallions trotting off with a fond smile. Then she turned to her male counterparts and gave a typical Diamond Dog grating laugh and a shake of her head. “Ha! Silly dogs. Stallions easy to please. And so many at once! Should try that.” She winked at them and then sauntered off down the passage the stallions had used.

The medium-sized dog and the smaller one who had spoken before looked down at the mare, who was calling more more between sloppily kissing the Dig Dog constantly burying himself in her warm and massaging passage. The smaller dog spoke aside to the larger, sotto voce. “Why we not use stallions? Easier, like she say. Plenty of females like ponies.”

The medium dog waved a hand dismissively, shaking his head a bit. “Not need to. Many mares. Easy to find. Like nice words and have free time. Mares just as strong. But that not important part.”

The smaller dog looked curiously at his boss. “What is more important?”

The boss dog watched the needy, greedy mare sucking on the Dig Dog's tongue, her trembling body looking alight with great pleasure, a smile showing on her snout, her face a mask of delight. The dog placed a hand on his smaller companion's shoulder and indicated the mare. “We make mares happy. Very happy. That most important part.”