I can tell my cats meows apart too. Sunny has the loudest meow. Storm has a little baby meow. It sounds more like a kitten. Pepper has a little meow too but it's a little bit deeper than Storm's. When Storm is in his cat carrier sometimes people think he's a kitten. The funny thing is that Storm is my biggest cat then Pepper and then Sunny. I guess in my house the smaller you are the louder you are.