Jen felt a strange tingle spread through her head, then felt it stop, she walked over to the mirror and gasped, her ears were now those of a lion.
"This can't be real, please, I don't want this." Jen said in shock.
As if to respond she felt her head tingle again, and could only watch as more changes began, her ears darted around on their own, making her hearing shift strangely as the top of her head started to grow and her eyes started changing, growing larger and turning amber in color, her vision growing slightly blurred and desaturated, the changes stopped and she saw her new head's base, her eyes darting, not focusing on what she wanted to focus on.
"NO! STOP! YOU CAN'T DO THIS TO ME!" Jen screamed, her ears and eyes locked on her reflection as her mouth and nose began to expand, filling in the missing parts of her new lioness's head, the weight of her new head was nearly three times her original, and she saw it was much larger than hers was, she tried to scream, but the mouth and nose now finished remained closed as she fell back on the bed, unable to support such weight with her scrawny human neck. The lioness opened her mouth and heard a human scream, her ears darted in panic trying to locate the source of the sound. As Jen continued to scream she felt her throat expanding, her voice becoming more animalistic, the fur spread down her neck and made a v between her breasts, she could no longer make a sound, her new head turning, sniffing her new environment, startled by the sights and sounds.
"GROOOOOOOOOOOO" She made a deep growl, trying to make sense of what was happening. Jen started to sit up, which confused the newly formed beast even more, causing her to struggle, and forcing Jen to fall over. Jen tried for a few minutes and finally gave up, the lioness now owned her, and she needed to calm her down to at least sit up. Jen reached up and tried to pet her new master and was met with a growl, Jen slapped her and she roared, shaking everything in the room. Jen needed to figure out a way to show her that they were now stuck together.
"Think, Jen, think, what could you do?" Jen pondered for a few minutes until she thought of something, "Oh.. no... I can't... she.... we.... Well I guess it's the only way."
Jen reached up again, and tried to pet her head and was again met with a growl and now an attempted bite. So Jen went for plan B, she reached down and started caressing her breasts, the new sensation startled the lioness and she looked down, her ears perked up as she saw what her new body looked like, fascinated she tried to control her new body and found she couldn't, she growled at it and started to snarl, but Jen continued, caressing, and slowly reached down, and started rubbing her pussy, the lioness started cooing, liking this new sensation. Jen continued masturbating until they cam, the lioness roared again.
After a minute, Jen reached up gently to the lioness and tried one more time to pet her, she finally got to touch her muzzle, and her new eyes opened wide, two and two were put together and she realized that this was her new body. Jen sat up, the lioness still resisted a little, and then Jen faced the mirror, her new head wouldn't focus on it so she reached up and pushed her jaw gently until she was staring right at them.
Jen had heard cats were supposed to be smart, and apparently this one was, Jen pointed a finger directly at her so she could see it and then pointed at the mirror, hoping the lioness would at least realized what was going on.
"Ooooo." She finally voiced, and Jen patted her muzzle, meeting a big nose and a lick from her new head's tongue, the lioness allowing her new body to touch her. feeling all of what was going on, realized on a basic level that this was her. Jen had a lot of work to do, training her new pet on how to act.