Ok, so we have one black cat, f, who, (bless her cottons) has hardly any voice - when she does miaow you struggle to hear it. The other, a big, m, half-Bengal, half-something else, bugger of a cat, miaows all the time. We used to think it was because he wanted feeding, buut it's not juust that, it's also when he wants to be let out, or when we're walking in or our of the house, or just to get us to watch him eat - weirdo. Aside from that though, can you think of any reason why he might be miaowing so much? He's not in pain.