After Mary saw the human vial shatter on the floor, she closed her eyes, resolving herself to just let lion John finish inside her, as he fucked her from behind.
But to her surprise, she soon found that his lion cock was ... smaller? He then came with a distinctly male human grunt, and withdrew.
She turned over quickly to see the rather disappointing form of a naked male human John, looking his lips and wiping his chin.
She realized he had, either through chance instinct or presence of mind, used his long lion tongue to lick up the spilled human vial before the liquid disappeared.
She supposed she should be glad for him, but honestly felt a little bit disgusted that her mate was now a puny human.
Human John and half-lioness Mary were soon sitting on her bed with the case of the vials, trying to figure out what to do.
"OK, so the human vial is gone, but there's still this woman/ girl vial?" John suggested.
"That just feminizes," Mary explained. "Like, if you took it, you'd turn into a girl of whatever species you currently were. If I took it now, it would exaggerate my female qualities."
"Interesting ..." said John. "What about, like, an ape or monkey? That's close to human. "
"You really think I'd look better as a 1/4 human woman, 1/4 lioness. 1/2 fucking gorilla?" Mary growled.
"I guess not, " said John. "Look, I know you're angry, but this situation is kind of your fault. You dosed me without asking. I fucking killed that guy in the bar, I think. "
John then saw the hair of the lioness Mary bristling, and thought better of having that conversation right now.
"Okay, well, someone delivered this to you, even if by mistake ... so there must be more human potion in the world. So I figure you have two choices ...."