Bestiality

He returned to her. It was so delightful that they could still communicate. She felt him smile against her neck, but he never removed his mouth. Instead, he trailed lower to her chest until he was precariously close to her breasts.

Remembering her reaction when he put his tongue on her nipple, she found herself arching into him. He didn't tease, and for that she was thankful. She was strung so tight that she feared what was going to happen to her. His lips closed around one nipple, and he sucked hard. Her back bowed, and her hands flew to grip his hair.

Oh, heaven, but this was a wondrous sensation. He suckled, in turns hard and then gentle and rhythmic. His tongue circled sensitive flesh, and his teeth nipped ever so lightly, coaxing the bud to an even harder point.