The girl sneezed, alerting her small fuzzy friend that was curled up above her chest. "Sorry Harvey." she reached out and petted the long critter gently, inciting a responsive murr. Denise then heard banging and ruffling from the boys room. "Can't they stay quiet for one day?" her voice was nasally and stopped-up.
She noticed Harvey had been behaving oddly, after his encounter with the family dog, Bix. However Harvey seemed... larger today, she only noticed the bigger size now as he layed over her chest. She groaned, and lifted him aside. However Harvey hated being picked up, and nipped her on the hand for doing so. "Yeow! Damn it Harvey!" Denise got up from her bed to her bathroom, and went to examine the bite in the mirror.
The wound hadn't left more than a slight scratch, which she rinsed out and placed a bandaid over it. Glancing back up in the mirror, she looked back at Harvey, realizing the once two pound ferret is now easily reaching three feet in length. "What's happening? Am I dreaming this?"
Denise cozied her way over to the large creature, letting her hand brush through its fur. She always admired his warmth, and now he was quite large enough to rest on. Harvey's head perked up, as he turned to lick at her fingertips. Denise giggled, finding him adorable still. As she leaned over to give him a playful kiss on the head, the ferret's muzzle turned upward, and returned the favor.
Denise had a mix of emotions, but inevitably found herself kissing back with her companion. She hadn't yet realized the fur growing from his bite or the lengthening bud of a tail over her behind. The noise from the other rooms broke their mood, releasing new tension into the room. Denise could smell Harvey... not just the usual odor, but an animalistic musk that filled the room. She found herself lost in tempation, her eyes wandering over Harvey as she looked over his form.
Harvey's limbs had lengthened and began to look more human, but Denise stopped to examine her pet's package. She had seen Harvey clean himself off before, being quite flexible, but as he stretched out now only could she fantasize about playing with his member. She snuggled over him, not yet noticing the soft brown fur coating her left arm or bottom. Her nose had began to lift slightly, the underside becoming a fleshy pink, it helped to enhance the smell. She gave an inhuman noise, a rumble or purr of excitement as she nuzzled her face against his.
Harvey's basic animal thoughts had developed more and more as the two progressed. Once regarded as his keeper, Denise seemed more interested in something else. Harvey couldn't resist the opportunity; as he nuzzled back he placed small nips on her cheek and neck. Denise began to feel quite hot, flushed with desire and blooming fur, she lifted off her shirt showing off her white furred torso. Harvey almost humanely cupping her breasts, giving them a squeeze as he continued to fondle her neck.
Denise made quick work of her clothes, only leaving her panties on as she could see the intent now in her companion's eyes. Denise stood off the bed, bending over, showing off her furred rump and fluffy tail. Her human features in her face were being covered by a steady cascade of fur, she gave a naughty wink as she took a claw and slid down her panties, exposing her swollen clitorus to the excited Harvey. She raised her tail up and braced her arms against the wall, as he came flying in. He slammed into her with precision, reaching his arms around her and clinging thightly, thrusting into her from behind like a crazed animal... which he was. Denise moaned and carved into the wall and floors with her claws, wet juices ruining down her thighs as Harvey continued to bang and release his pent up desires to mate. With a powerful clutch onto her breasts, he nips down onto her neck and explodes; Harvey's hips bucking and pounding into the soft bottom of his new mate. Denise's moans went silent as she had her first ferret orgasm as well, slowly peeling herself off the wall as her experience slowed.
Denise and Harvey cuddled into the bed together afterwards. Afterall, she did have a whole sick day to use up.