"She's a Real Animal in Bed!" M X F

So this is more of a concept then a full idea, but I'd love to discuss it with someone. Basically MC is a guy dating a woman who happens to be some sort of were-beast, whether that a wolf, bare, fox, capibara, is to be decided, but every full moon she transforms. However, she also transforms when she gets super frustrated, upset, particularly hungry, or when her arousal is heightened. This definitely leads to a sort of Jekyll and Hyde thing where her personality when changed is drastically different then her normal one, meanwhile MC is just trying to figure out how to cope with this while staying in the relationship. Like I said it's not a full blown idea but I'd love to discuss it more in messages.