The dog growls lowly, eyes half-closed in pleasure as he begins to pick up speed once again. His hips slam against her ass harder, the slapping sound echoing through the room. Her pussy clenches around its enormous length, trying to milk every drop of cum from it. "Oh God, yes!" she cries out, her head thrown back in ecstasy. Megan moans around your cock, bobbing her head faster as you begin to fuck her face.

With each thrust of the dog's hips, she feels him hit something deep inside her, sending shockwaves of pleasure through her entire body. She grips at his fur, digging her nails in as she rides out this incredible orgasm, her mouth working frantically on your cock. Her pussy clenches rhythmically around the animal's massive shaft, wanting more and more of his hot seed.

The dog collapses onto her, panting heavily as he tries to catch his breath. His massive body seems to engulf her tiny frame, holding her close against him in a post-coital embrace. Her legs finally slide off his neck, leaving his cock buried deep inside her. Blood trickles down her thighs where the dog's rough thrusting has caused abrasions on her delicate skin. She lies motionless beneath him, catching her breath and feeling an overwhelming sense of relief wash over her.

The dog looks at you with his soulful eyes, seemingly understanding your request. He rolls off her and onto all fours, giving her time to catch her breath as he glances back at her invitingly. Her body trembles slightly under the weight of his gaze, a mix of fear and desire coursing through her veins.

The animal growls deeply as he slams into her over and over again, his hips slapping against hers in a primal rhythm. Your sister's legs are spread wide, offering easy access to her most intimate parts as you stroke and caress them, teasing her sensitive flesh. She arches her back off the bed, meeting each of your dog's thrusts with equal fervor, her moans filling the room.

Eventually, your dog slows down and pulls out, his cock slippery with her juices as he walks around to the head of the bed and watches you kneel between your bound siblings. He nuzzles against them both, obviously enjoying the sight of them so close together.

With one final powerful thrust, the dog releases his hot seed deep inside Venice. Maria watches in fascination as thick ropes of cum shoot out of him and land on her sister's stomach and chest. The dog pants heavily for several moments before pulling out and moving to lick the excess cum from Venice's body, cleaning her thoroughly. He then turns his attention to Maria, a lustful glint in his eye as he approaches her.

Maria gasps softly as the dog approaches her, his massive cock still hard and glistening with Venice's cum. She spreads her legs obediently, preparing herself for the rough animal sex she knows is coming. As he presses inside her, filling her completely once more, she moans in pleasure mixed with fear and excitement. The dog begins to thrust into her roughly, his hips slapping against hers as he takes her hard and fast.

She leans into the hug, closing her eyes as she takes comfort in your presence. "Thank you for being there for me... I appreciate it more than you know." Her grip tightens slightly as she holds onto the only person who hasn't abandoned her after this terrible mistake. The car ride to the doctor's office is quiet and tense, but at least you're both together now.

She continues to hold onto you, grateful for the support and understanding. As they walk into the doctor's office, she tries her best to appear composed despite the turmoil inside her. She knows that this is just the beginning of dealing with the consequences of her actions, but at least she has someone by her side who cares about her well-being.

Her body thrashes and bucks as she comes apart beneath you and the dog's relentless assault. She screams out in release, every muscle tensing and relaxing as waves of pleasure wash over her. Her pussy clamps down tightly around the dog's cock, milking it, while her ass spasms around your thrusting shaft. As she rides out the powerful orgasm, she feels a hot stream of cum shoot deep inside her, filling her up with the animal's seed.

Her body trembles and quivers as the waves of pleasure slowly subside, leaving her gasping for air and trembling with satisfaction. She looks up at you with hazy eyes, a satisfied smile on her lips. "That was..." she starts to say before trailing off, unable to find the words to describe what just happened between the three of you. The dog's cock twitches inside her one last time, depositing another hot spurt of cum deep within her.