Filthy

Anna (23) whimpered from her cage on the floor, her new paws pushing futilely against the metal bars as she watched her stepbrother, Ben (23) take her former body from behind. Anna was embarrassed and outraged watching her dog behave like that in her body.
Ben didn’t know it wasn’t his stepsister in her body. That she’d been the victim of a magic spell gone wrong that had seen her swap bodies with her dog. Sure, she was acting a little weird when he got home from work. Making not-quite-words with her mouth. But her intent was clear.
Anna’s body had jumped her stepbrother the minute he got home. her former butt wagging furiously as she licked his face, so happy to see him. She’d tried to interfere, but Ben had scooped up her tiny, fluffy body and popped her into the cage before proceeding to help her former body get naked and then plunged into her from behind.
The noises her body was making right now were ridiculous, but Ben didn’t seem to notice. She guessed he’d always had a thing for her and maybe he thought the weird groans and all the slobbering was just how she acted when she was horny.
Both Ben and her former body seemed to enjoy it, howling as the came and then – Jesus – her former body tried to lick itself clean. When she couldn’t get her head down to her pussy she used her hands, dragging her stepbrother’s cum out of her pussy and stuffing it in her mouth.
“Wow, I didn’t know you were so filthy,” Ben laughed.
If Anna could blush in her new body she would have.

Two roommates find a set of magic rings that allows one to transform and alter the mind of the other, forcing them into some sexy fun in Ring of Power 1, available only on Body Swap Stories and Smashwords. Preview here.