Katy's eyes were closed as the dog got inside the room and she kept them this way when he started to mount her.
Soon she felt the dogs' cock hammer in and out of her pussy and she loved every second of it. Close to his panting muzzle she inhaled Buster's breath and felt his wonderful fur on her naked skin.
Her vagina was incredibly slick and her body still demanded more ectasy. Katy longed for Buster's hot doggy cock and semen. She threw her arms around his massive back and dragged him as close as possible to her shivering body. She longed for his canine love more then she had ever longed for anything in her whole life.
While still being impaled again and again by the dogs' cock, Katy opend her eyes for a short moment and looked at her canine lover.
When she realized that the dog mounting her wasn't Buster, a short scream escaped her mouth.
Before Katy could react in any way, the dog's sperm sprayed inside her body and his knot expanded rapidly, sending her into an incredible orgasm in which her humanly moans turned fast into canine whines.
The dog tied to her vagina while Katy's body was still shivering in the aftershocks of what was the mightiest orgasm she'd ever experienced.
Katy tried to push the dog from her body, but she was only able to get him to stand up an all four legs, as his cock was still deeply locked with her vagina.
Panting, the dog lied beside her, his gaze fully locked on Katy's eyes.
"How's this possible," Katy wondered in a frightened tone as she tried to dislodge herself from the dog's tie, but she had to give up very soon as her actions hurt her vagina and the dog started to growl deep inside his chest. He did not want her to untie and Katy knew she was in grave danger if she'd further tried to escape.
Lying on her bed, stomach to stomach with this strange dog, Katy closed her eyes again and tried to think straight.
What had happened to her? Why had she longed to be mounted by Buster? Why had she loved to be impaled by this huge Labrador Retriever?
Why ... why was the feeling of the dog tying with her as incredibly ecstatic as it was just this monent?
Without wanting to, Katy moaned and whined as she realized and felt the dog's cock locked deep within her.
She felt complete and alien to herself at the same time and as her lust to continue mating with the Lab grew once again, she knew that her body changed and that she was getting into canine heat.
Katy knew without opening her eyes that fur started to creep all over her body, starting from her vagina and enveloping her skin in a coarse fur. Her bones and muscles shifted and rearranged themselfes. Her breasts changed and her tailbone extended to form a dog's tail.
Slowly the Lab started humping away on her again and Katy, still in the middle of her transformation, realized that she was turned into a obedient member of a pack of cursed dogs.
Her human self, her human emotions... everything was on the brink of total deletion. She had to resist the canine instincts that were already taking hold in her changing brain to ... to ... ...
As the Labrador Retriever's cock spew hot doggy jizz inside of Katy's hot tunnel, her human thoughtpatterns collapsed and her mind turned into that of a obedient bitch in heat. Her own orgasm shook her own Labrador-body as she whined and barked and howled...
Cal and Mark's mother Darlene entered the room not long after Mark's cock finally dislocked with Katy's canine vagina.
"Very well, you've become a fine beta-bitch," Darlene's voice drifted through Katy's sex-crazed mind. "You're subject to my will now. Come, we've got work to do... we have to find the enchanted dildo and there are still humans to be turned into dogs nearby, I can smell their stench..."