My cat, Cricket has started doing something really annoying. She is not in heat becuase I know for sure when that is.. but she has taken to meowing ALOT. Now, it isn't an I'm-in-pain-help-me-crying meow, but a playful, rolling meow. THe weird part is that she does not do this during the day. She usually starts it about 5pm at night and she meows and meows until I am ready to THROTTLE her. It not due to her sleeping all the time and being up at night, becuase she and Ash play constantly so I know its not that. But WHY else would she be doing this? She is not pregnant either becuase she is never allowed out doors and Ash is neutered. She goes to be spayed in October. Any ideas?