'Or at least, it will be soon'.
At the moment, it was just a small hairless lump protruding from the bottom of her spine, just above her arse crack. But she knew what was happening now, it all made sense.
Kate's hair turning ginger/orange, Nate getting a bit chubbier, and although she hadn't noticed anything different about Eli, maybe her attraction to him was because of the Cow-Bull link.
Emily decided to head for the bathroom to get another look at herself. She forced the jeans over her widened hips, realising they probably won't fit at all if she grows a little more. The little tail nub was sticking out of the gap between her top and jeans. She just hoped that everyone was too drunk to notice until she came up with some way to cover it.
Emily trekked back down the garden to see Kate and Eli heading indoors. She followed them in and headed upstairs for the bathroom. When she reached the top of the stairs, the pair were trying to get into the room next to the bathroom.
"Guys remember we can't go in that one right? Meera's a dog in ther - wait no, Meera has a dog in there!" She drunkenly shouted at them.
"Oh no, we don't want to interrupt Meera being a dog!" Kate joked to Eli. They laughed and stumbled into one of the other rooms.
Emily went into the bathroom and locked the door behind herself.
'Weird, I didn't see Nate on the way through' she thought, pulling her jeans down and sitting on the toilet.
She took out her phone and unlocked it, she had a few notifications, the first was a message from Nate.
'Sorry Em, I've gotta run, I'm not feeling too great. Maybe we can see each other on Sunday? xx'
Emily felt pretty confident in thinking that his changes embarrassed him enough to go home.
She checked on some other messages before opening up the app.
Emily - Cow - 17%
Evie - Cat - 3%
Nate - Pig - 17%
Kate - Fox 7%
Eli - Bull - 8%
Meera - Dog - 1%
Emily started to panic. She didnt know what to do.
'Is there even anything I can do?' she thought.
She was deep in thought when a warm feeling came from her tail nub.
'That actually feels...nice' she decided. She started touching it with her left hand, feeling it slowly growing. Her right hand slid down to her pussy and started rubbing it. She still felt horny even after having sex with Nate. She decided her tits needed some attention too, so she pulled off her top and unhooked the bra, throwing them to the floor.
Her right hand continued working her clit and her left hand started playing with her nipples.
'Oh god they've never felt this sensitive before this is incredible'.
Her right hand joined in with the breast play, leaving her unattended down below.
'Oh god I wish I had another hand right now' she thought. As if on command her tail finished growing and snaked itself underneath her, brushing itself against her clit.
"Ffffuuuuck" she cried out, slightly overwhelmed at the sensations she was feeling right now.
Milk began dribbling out from her nipples now too, getting stronger when she squeezed at them harder.
Emily looked down at her tail, loyally working on her. Black bushy fur had formed on the end of it, and she could see white and black fur slowly creeping in over the rest of it.
Watching herself change pushed Emily over the edge, and she hit her climax, squirting from all three of the spots she was playing with. Her tail fur finished growing as she sat there recovering.
She was snapped out of her sexual haze by a knock on the door.
"Hurry up I need to piss so bad!" shouted a female voice from the other side, urgently.
Emily quickly got up and grabbed some toilet roll, quickly cleaning up herself and the floor she sprayed over. She caught an eyeful of herself in the mirror, and took a moment to appreciate it.
'I... Actually look pretty fucking hot right now' she thought. Her hands ran over her curves.
'I feel so sexy, these hips are incredible'.
The mysterious pee-er knocked again.
Emily quickly squeezed into her clothes once more, making sure her tail was slid up the back of her top. People would still see it if they looked at her back, but this was better than it swaying around freely until she found a jumper or something.
Emily took a deep breath, composed herself and went back out to the party, making sure the girl waiting didn't get a chance to look at her back.
She picked a door, hoping it would lead to Meera's room, forgetting who might be inside.