So I have 5 kittens irl, they are now 9 weeks old. Whenever I'm playing SL, I have my speakers on, and most of my time is spent where my meeroos are, so you can always hear them chirping. One of the kittens, Zorro, has been doing this really cute noise, and last night my boyfriend heard it. He was all it sounds like one of your meeroos! (he doesn't play SL) and you know what? It sounds EXACTLY like the meeroos chirp. We figure that he's been hearing it for the past 9 weeks of his life, that he somehow picked up the sound and now does it himself. I will try to catch it on video before we give him away to share with you all, but I have to say it's super cute!