Erika was staring at her canine erection when an electric spasm ran through her body, and she felt her joints crack.
Her feet and palms had just lengthened a little, and her hips were narrowing. Her ribcage also felt weird, with her breasts sticking out in a strange way.
"Oh no... It's getting worse", Erika whimpered. A wave of anxiety came over her, and her boner rapidly softened.
She got up from her bed and put on the longest nightgown she could find from her closet. Her legs were hidden from sight, save for her feet of course, but she only needed to grab a plate in the kitchen. No need to linger around or go to the living room where her parents were.
She stepped out of her bedroom as quietly as possible, trying to ignore the feeling of her increasingly heavy furry ballsack swinging between her legs. She didn't want to think about genitals or breeding and get another erection!
The kitchen was only lit by the TV lights from the nearby living room. Erika's eyesight had no issue adjusting to the darkness, and she spotted her full plate on the table. She could smell its content as though she had her nose on it, and her mouth started salivating. A weird creaking sound resonated in her skull from her jaw, and she felt the stub of a muzzle push forward a little.
"I better hurry..." Erika thought to herself, her head getting dizzy.
She leaned forward to grab her plate, but another spasm shook her and she had to hold on to the table, her knuckles almost turning white. Creamy fur was spreading over her forearms and hands now; her vertebraes popped as her tailbone grew into a full canine tail. Erika felt it swag in her nightgown and between her arching legs. Her knees and ankles were burning, threatening to mutate any moment now.
She felt weak. Her fingers clenching on the table were losing grip as they turned into pads with canine nails. She reached for her plate but was unable to grab it with her not-quite-hands, not-quite paws.
A rope of drool escaped her mouth as her jaws made another thrust forward, looking more and more like a muzzle by the minute. Without even thinking, Erika lowered her head and started wolfing down her meal to get away as soon as possible.
She was overcome with new sensations. Her sense of taste was different, and her broad tongue was doing an amazing job at cleaning up her plate. She was making a bit of a mess however, pushing food out of the plate with some falling on the chair and floor.
"Max, what are you up to buddy", Erika's father called from the living room. Erika froze, trying to not make a sound. Somewhere in the house, the young husky heard his name and walked to the living room, his collar making a soft metallic sound. "There you are, boy. Good boy!"
Erika wagged her tail excitedly at the voice and at the sight of Max without even realizing. Licking her chops, she bathed in the feeling of her full belly, quite content with herself. Another spasm made her double over though, bringing her back to her senses.
Almost losing her balance, she sneaked out of the kitchen and staggered to her room as her legs were turning entierely digitigrade. Erika grunted in protest and a low canine sound escaped her mouth. Stumbling on her bedroom's step, she shut the door behind her before falling on all four. She felt her breasts disappear in her furry chest.
The nightgown constricted her movements and she let out another annoyed canine sound before sitting back. Her balls were swelling, her shaft fat and itchy. Erika was overcome by the imperious need for sexual release...
Pulling on the nightgown with her teeth, she uncovered her groin and looked at the pink flesh that was starting to poke out of its sheath, almost falling over. Its size looked even more impressive when she was in this form.
A pleasant churning inflated her already massive balls, while more of her member slid out in plain sight, getting fat and hard. Erika was transfixed by the sight. Before knowing what was happening, she was drooling over her own boner and licking its length, feeling the taste of her pre on her canine tongue.