Pounding into his mate again, the Wolf was growling with every thrust. He had a firm grip on the excess skin and fur at the nape of her neck, and he was pleased at her stillness as she accepted his seed. His forepaws were cramping, and he flexed his wrists to hold himself in place on his female's thighs even as his fingers shrunk and lost their human dexterity. The Wolf was not conscious of this change, nor did he register the fact that his tail was growing out, his dark grey fur thickening as it completely covered his shoulders, back and rear. His legs shortened as well, even as his hips and shoulders reoriented to their full-wolfish positions.
Meanwhile Mary was nearly out of her human mind, her new instincts telling her to remain still for the dominant wolf filling her from behind. She barely registered the tickling prickle as her luscious white fur finally covered her legs and feet, reaching her toes just as they shortened into hind paws, her heels having elongated as her nails darkened and thickened to sharp claws that dug into the couch cushions below her.
As she felt her mate come once more within her, Mary's eyes flew open, but as she didn't have a mirror on the arm of the couch, she was unable to see that her eyes had lightened to a glacial-blue. Had anyone been in the room to witness the scene, they would have been puzzled as to how two large wolves had come to be fucking on a couch in a sealed human apartment. As it was, the neighbors were becoming increasingly worried and annoyed by the grunts, growls and howls of ecstasy coming from Mary and Xander's place.