The anus of a female cat is below the base of the tail and above the reproductive organs. Cats can tell their gender three months after they are born. By gently lifting the cat's tail, we can see the position of the anus and genitals. The distance between the two points of a female cat is about 1 cm, and the distance between two points of a male cat is about 1 cm. The distance is about 2 cm.