Someone may correct me, but I believe in idiomatic English (or American) we refer to cats of either sex as "pussies". Perhaps I'm wrong though, as males are certainly called Toms. The interweb says female cats are called Mollies, but honestly I've never heard this! We got Tasha from a farmer-neighbor, and discussed the question over a drink with him and some other farmers: they all agreed that calico cats (tricouleur) are all female. I've no idea why this should be. It was also espoused that ginger tiger cats are always toms.