Today, as always, you wake up in the morning. When you open your eyes, you see your pet dog, Vlad, standing in the doorway. "Good morning, mistress," he says with a strong Russian accent, but you can hear a smile in his voice. You notice a large bulge in his pants. Vlad's thick fur covers his eyes, but you can tell that he is looking directly at you. "I couldn't sleep tonight, I was thinking about you," he reveals a large used condom, about the size of your head, filled with a generous amount of cum. The dog takes a few steps, and his giant 76-centimeter penis wobbles between his legs. Vlad lies down on your bed. "How did you sleep?" he mumbles something in Russian under his breath and places his muscular hand on your thigh.

"Well, I got carried away last night," he chuckles awkwardly. "So, do you think we can put that...uh...'to work?'" Vlad asks as he nuzzles closer to you, his warm breath tickling your neck. "Maybe give me a good reason to blow off some steam today?" He lets out a low growl and thrusts his hips forward, grinding against the sheets beneath him. His erection strains against the fabric, pushing the thick veins on the underside of it even more prominently on display.

A cocky grin spreads across the dog's muzzle as he replies, "Well, isn't that what I'm here for?" He rolls over onto his back and beckons you closer with one hand while his other cups your cheek. His imposing member leans against the bed, pointing at the ceiling, still dripping pre-cum. "Come here, mistress," he purrs as he nibbles gently on your earlobe. "Let's see what kind of trouble we can get into today."

"Oh, you know me so well," Vlad growls as he wraps his massive arm around your waist, pulling you down onto him. "I've been dreaming of puppies running all over the house for weeks now." He pins your body with his, trapping you underneath his impressive weight and strength. His other hand finds its way to your breast, massaging it roughly through your nightgown. "And I think today is going to be a very good day for that dream."

With one powerful thrust, Vlad impales himself on your wet center. You cry out in shock at the immense size of him filling you so completely, stretching you beyond anything you've ever experienced before. His muscles flex and ripple as he begins to move inside you, his pace fast and hard. Sweat beads on your forehead as your master fucks you senseless, his teeth bare in a snarl of pleasure.

The dog lets out an insane howl as you tighten around his cock, your words pushing him over the edge. His hips buck wildly, driving deeper into your body with each thrust. The headboard slams against the wall and you can feel his hot seed spurting inside you again and again until finally he collapses on top of you, panting heavily.

You're sore, but strangely satisfied as you lie there beneath the massive dog. His breath fans across your neck and cheek in ragged gasps, and his still-erect cock twitches inside of you every now and then. "Puppies..." he whispers contentedly, and finally rolls off to the side, giving you some much needed relief from the crushing weight on your chest.

Vlad grins and licks his lips, clearly pleased with himself. "Yes...yes, you'll have quite the little family soon," he says proudly before giving your stomach a gentle nudge with his nose. "And don't worry about taking care of them, mistress...I will help as much as I can." His voice is gentle and reassuring, making it hard not to smile back at him despite the aches all over your body.

"Now," he continues, looking you in the eye, "we should probably get you cleaned up a bit and find something for that...sore spot of yours..."

The words seem innocent enough, but there's an undeniable note of hunger in his voice that leaves little room for doubt about what he really means.

The dog's ears perk up at your words, and he can't help but laugh heartily. "I like the way you think, mistress," he says between chuckles. "But I think we both know that there's plenty of sperm left inside me, so let's not waste any time cleaning you up and getting back to...well, more important business." His expression turns serious for a moment as his gaze lingers on your body. "Are you sure you want to keep going?" he asks softly, concerned about overwhelming you with his size and strength.

A predatory grin spreads across the dog's face as you give him your consent to continue. His eyes glint with hunger and desire as he climbs back on top of you, positioning his giant member at the entrance to your wet core once more. With one powerful thrust, he buries himself inside you again, growling deeply in his throat as he begins moving wildly within you.

His hips slam into yours with a rhythm that borders on brutal; his massive weight presses down on you with such force that it's hard to believe someone so large could possibly be this agile. Your body feels like it's being put through the wringer as he uses your womanhood like a personal punching bag, each impact sending shockwaves of pleasure coursing through you in spite of the pain.

"Mmm," he moans into your neck, nipping at your flesh with his teeth. "You feel so good...so tight..." His words trail off as he focuses on the task at hand: filling you with every last drop of his seed until there's no part of either one of you that hasn't been claimed by his heat and desire.

A savage growl rumbles in his chest as he feels you tensing around him, your body starting to clench and convulse with the force of your impending orgasm. His thrusts become faster, harder, deeper; his hips slam into yours again and again until it's impossible to tell where one ends and the other begins. You can feel his hot seed spurting deep inside you as he cums, filling every crevice and cavity with sticky strands of his DNA, marking you as his for life.

Finally, Vlad collapses atop you once more, his heavy breath misting your face as his giant member twitches weakly inside you. For a long moment, there is silence save for the sound of your ragged gasps and labored breaths mixing with his own. It feels almost surreal, as if reality has been suspended in the wake of their shared ecstasy. But when Vlad looks down at you now, he knows that nothing will ever be the same again.