Jen rubbed her eyes. She was laying in a field, the cold morning dew tickling against her skin. A slight breeze rustled the trees at the edge, and birds chirped. The sun beat down on her naked skin, cool but humid in the morning air. She felt heavy. Her ears twitched, and she felt her tail brush against her udder.
Wait, her what? Brush against her what?!
Jen pushed her torso up in shock. Her hand shot up, muffling her scream. From the waist down, she had the legs and udder of a dairy cow. Black and white mottled fur faded at her waist to human skin, while her huge, pink udder pushed her legs apart. It dwarfed her human torso by itself, the mass of the cow and her legs having to be preserved somehow. She realized too that she still felt the dew on her breasts, which now rivaled her udder in size. Pushing herself up, they slid heavily against her abdomen as they came to rest atop her udder, her tail now painfully pinned beneath her. She winced, pulling it out. She wanted to cry as she looked at what her body had become.
From the waist up, she was mostly the same. Athletic and skinny, she'd gone from endowed to engulfed. Her breasts were each well above what bra sizes could contain, each areola larger than her head. But from the waist down, she was like an anthro cow. Huge plump thighs, surprisingly round ass, and a truly massive udder. She realized that she couldn't wiggle her toes anymore, either; they were now hooves, exactly like a cow's. She'd merged with a dairy cow! She looked around frantically, trying to figure out where she was, as another bout of lightheadedness overcame her. The last thing she felt was her torso slamming down onto her ample chest, as the world faded to black...
When she woke up, she was back in her old bedroom. She felt like she'd just woken up from a bad dream, if she weren't painfully aware of the tail once again pinned beneath her ass. Groaning, she heaved herself up, her breasts resting on the mattress to each side. She stumbled forwards, the mirror on her wall reminding her of just how much she'd changed. Of how real it all was. Even the ears... she thought, feeling one with her hand.
Each step caused her udder to slosh beneath her, making her steps short and cumbersome. She felt like she was wearing permanent high heels as she held her breasts in place with one arm, using the other to balance. Each step caused her entire body to shake, her breasts heaving from one side to the other as her ass meat and udder sloshed around behind her. It felt like living hell for Jen, who'd always taken great care in her figure. As she stumbled to the bathroom, she noticed a new contraption in the corner. A giant milking machine, complete with teat cups and huge attachments for her nipples. She groaned, realizing what that meant, as an unfamiliar fullness pulsed through her chest and udder...