I have noticed in the last couple of days that Chloe is starting to accasionally make proper meow sounds rather than her previous attempts. Before she would start with a meow noise but end it with a strange clicking noise. Before she started attempted the clicking noise she just squeaked away. Toshi is still just squeaking! They are both 9 months old. Do cats learn to meow as they grow up or is this just Chloe trying different techniques to get my attention!