Well, from what I understand, the social structure of feral cat colonies is fairly similar to that of lion prides. Females remain in familial groups while the males wander to join different groups (including the same sort of fights between males for the chance to join those groups, and then to keep others from doing so and taking it from them). The similarity breaks down a bit in urban areas where the size of a colony may grow well beyond that of a pride, but that's a function of population and food supply levels more than the innate preferences of either cats or lions.
