It's funny: back at the house where we used to live, neither of our cats talked very much, although there was a mouthy little calico living there (she still lives there and is still very mouthy
). Now that my boyfriend and I have our own place, it's like our cats need to fill in the void left by the calico and have become the most incredible chatterboxes! Spike is the more vocal of the two; sometimes I think he meows just to hear the sound of his own voice. He meows a greeting to us when we come home from work, he meows when he's hungry, he meows when he's bored and lonely, he meows when he wants something and he meows when he doesn't know what
he wants. He also tends to forget where he left us (he'll leave the room and forget which room we were in) and then cries until we call him back. Oz is quieter, but his meows and cries are more plaintive sounding -- almost mournful -- and he typically doesn't start until Spike has been talking for a while.
If we stopped talking back to them they'd probably stop being so noisy, but at this point it's almost second nature to reply when one of our cats starts talking. And both my boyfriend and I talk to the cats (in English) all
the time, so it's no wonder they talk back!