"Well you certainly look like you enjoyed that... That's good, because one thing I forgot to mention is that sex makes this potion's effect permanent."
Still caught in the afterglow of experiencing the amazing pleasure of her first female, animal orgasm... in addition to the juicy feel of Sarge's huge knot still filling her sex, Wendy's brain barely registers the significance of what Megan has said.
But eventually the knot tying Sarge to Wendy diminishes, and Sarge dismounts and busilly begins licking his dick clean, leaving Wendy standing there, her vagina wet and dripping with cum and pussy juices.
As the pleasure and passion begins to fade the horrible truth of what has happened begins to dawn on her. "Permanant???" she thinks in horror. Would she be stuck in this bitches body for the rest of her life? What about her family? What about getting married and having kids? Oh god, wait... she was now pregnant. And she'd soon be giving birth to puppies!!!
She bows her head towards the ceiling and cries in anguish. If only dogs had tears...
Then quite suddenly and unexpectedly, Wendy feels...