I have a year old female tabby named Kitty, and I noticed that she does this odd thing when meowing. When I'm not around, my roommate said she's very vocal, but as soon as I get home, the norm for her volume in meowing is practically mute. She is vocal with me as well, but she meows so softly, it's like a whisper, and it's only when I'm around. At first I thought she was always like this until my roommate noticed she'd suddenly have a voice when I wasn't home. I began sneaking in so Kitty wouldn't notice and caught her meowing loudly red handed many times, but as soon as she saw me, she was back to whispering her meows. I've never had a cat behave like this towards me, she's very unique. What could be the reason she purposely loses her voice around me?