Her fears were realized as she began growing hair all over her body. Her legs lengthened as a canine muzzle appeared on her face. Her ears shifted to the top of her head and grew long and pointed, just like her new teeth.
Katie felt a stretching sensation as her midsection lengthened. Where once had been flat, defined, female abs was now a furry eight pack as her torso lengthened.
Her boobs began contracting into her chest, flattening out, and turning into male pectorals as the rippling muscle spread all throughout her body.
Her biceps and forearms became very defined, strong, and attractive to the female gender. Smooth skin was replaced by a coat of grey, white, and black fur.
Katie began to feel a tingle in her back and ass. Her back became more defined. Her hips rose to a distinctive male shape and tapered outwards to her shoulders in an attractive manner.
A tail sprouted just above her ass crack, the fur racing down her legs and into her crotch. Where she once had a beautiful clit, it had now grown into a canine dick ten inches long with a beautiful knot at the base. Her cock angled up to her chest and was enveloped in a furry sheath that came up just below her waistline. Two furry balls grew out right below her dick that were the size of tangerines.
Her muscles continued growing and shifting below her waist. Her ass tightened, grew more muscular, her thighs became larger and longer, more defined, her calves grew muscles and fur, and her human feet grew two sizes larger and adopted claws like her hands.
Katie's clothes were practically ripped to shreds. She slid off what was left of the cloth on her body and began inspecting her new features.
She saw the sheath and balls and immediately her sex drive kicked in. Her cock grew out of the sheath and lengthened, the knot slowly growing at the base as she looked to Tiff.
"Come to me..." Tiff was mesmorized. She walked over to the horny wolf and stopped just in front of him. "I like what you've done to me Tiff... now let me return the favor."
Katie took her hands and grabbed the collar of Tiff's shirt, ripping it in two to reveal her breasts. Katie began groping and licking the nipple, ushering moans from Tiff. Slowly, Katie's hands went south, rubbing Tiff's stomach and licking at the same time to just above her pantie line, which lay just underneath her tight blue jeans.
Katie grabbed the blue jeans at the button just above the zipper with both hands, and in a fierce lust for sex, ripped Tiff's pants in two to reveal pink panties and a wet mound.
Katie was growing rough as she ripped the panties to shreds with her teeth, finally making her way to sweet pussy. Her tongue carressed Tiff's clit, causing her to orgasm and spasm. "Are you ready?"
"Ready for what?" Tiff felt something press at the entrance to her vagina, gasping at the hot probe. Katie's dick spasmed, shooting cum from the feeling. She finally plunged into Tiff's pussy, causing her vagina to clench around the hot cock as she moved in and out in an ever increasing rhythm. Finally, the knot popped in, stretching Tiff and causing a fifth or seventh orgasm.
Tiff felt the hot cum shooting into her and as she was coming down from her climax, she heard Katie ask, "Transform or Dare?"
"Transform..." She answered nervously.
The Katie-Wolf grinned lustfully at her answer. Tiff's body began changing into a female werewolf, with defined abs, DD cup breasts, a tail, and a vagina that grew tighter and tighter as her transformation raced across her body, down through her pelvis, gripping Katie's cock.
Tiffany felt a tingle in her womb as another orgasm hit her out of nowhere. Then another, and another, and another as her body became more sensative and she couldn't stop cumming. "What did you do to me?"
"Multiple orgasms, stronger one after the other... and a defined, sexy body to go with the one I'm in."
"Transform or Dare?"
Katie answered, "Transform," and she felt her cock grow longer, harder, and larger in girth as her knot grew to 4 inchs wide and her balls became the size of small oranges and her drive increased. She began having unending orgasms too as she snaked her long tongue into Tiff's mouth, reaching almost the back of her throat, adding to the pleasure.
Without warning, Tiffany shouted, "Transform!" Her breasts grew fuller and more defined, firmer, and her nipples stood taller and more erect. Her legs became more slender and the gap between her legs at her now tighter pussy widened as her hips grew wider, her waist was smaller, and her muscles became even more defined.
They...