Lust is a Thing with Fangs - Lup tries to sneak in one more day of laboratory work before her annual heat cycle kicks in. Barry is there. It goes about how you would expect. (Explicit content.) (By @tanger-catnip & @youhearstatic)
Lup paused at the door to the lab. She stood up straight, wrapping herself in dignity and ignoring her heart pounding in her chest like a jackhammer. It would be fine. It was only Barry. He would be way too focused on his work to notice her trembling, or the fact she was flushed from the tips of her ears to her toes.
Lup licked her lips. She suddenly had the strangest feeling. Like part of her had come to a revelation about something and another was frantically trying to muffle it before it could be brought to her attention.