Margaret's transformation

Peter stared at the redhead on her hands and knees below him. He instinctively knew what to do with her. He needed to fuck her, to mark her as his new mate.
His big, clawed hand grabbed her hair, removing her hungry mouth from his cock. She moaned with disappointment and pain as he tossed her on the exam table.

“Fuck me! Fuck me now!” the once composed doctor said.

Peter answered her by slamming his prick in her. “
The demonic feline bucked and thrust in her like the beast he was, driving his cock in deeper and deeper until the pointed head bumped into her cervix. The doctor twitched and jerked with each powerful thrust, her mind unable to cope with the intense fucking she was having. She was panting as orgasm after orgasm hit her, her moans gradually turning into purring. .

Desire, lust and evil thoughts began to envelope their minds as Margaret began to show signs of her own corruption. Dark fur was sprouting around her pussy and was rapidly spreading over her skin. Her canines were turning into fangs that slightly protruded from her mouth. They stared at each other’s as her glowing pupils became golden. She growled and purred as she thrust against her new mate with renewed energy, trying to drive his massive cock even deeper inside her.

Two new rows of nipples appeared under Margaret’s breasts which rapidly grew into 2 more sets of fur covered breasts. Her body was now fully encased in black fur while her red hairs grew into a flowing mane on her head and back. She snarled and grunted through her new fangs, bucking her wide hips back against the thrusts of the male covering her, clearing savoring every second of the brutal fucking. Her newly formed tail coiled dexterously around the base of the demon's member, squeezing and milking it.

“Y-your changing me” she said between moans and snarls of pleasure. “P-please, don’t stop, turn me into your sexy, beastly lover! Rrrrr fuck me!” The former doctor didn’t have a lot of lovers, focusing entirely on her job. All her thoughts about it disappearing, she now only wanted to enjoy the forbidden pleasure of the flesh. Suddenly she threw back her head and screamed in agony as her cheekbones broke and shifted, gaining many feline aspects.
She howled with pain and pleasure as her toes and fingers turned into claws, tearing the table with ease.

Two lovers could no longer be mistaken for anything human. They roared together as Peter finally came hard into her mate, sealing her changes. Margaret’s new body trembled with pleasure, both of them delighted by the improvements to her pussy that allowed her to literally suck on Peter’s cock and milk it of even more of his cum.

Margaret rolled off him and crouched sexily on all fours. She looked back over her shoulder and winked at him as she moved her tail to the side, showing him her wet, bestial cunt. He growled as the sight as her mate’s scent washed through his lust-filled brain. He moved toward her, ready to give her another true bestial mating. Suddenly both of them froze as they heard the door opening.