[Catu]

(Warning, coment coming from someone who doesn't own cats)

Cats may not be pack animals by themselves, but thy are a domestic animals with all the changes it involves, starting with neurological and endocrinology changes from the African cat they come from. That means that just like dogs, cats have a degree of neoteny (keeping juvenile characteristics in adulthood) and that makes them more tolerant of other cats than any wild counterpart. On the other hand, the range of territory is widely determined by the amount of food available, if there is food in abundance, there is no need to guard so jealously a vast territory and coexistence is possible. Since they are eternal juveniles and food is less of a problem for feral domestic cats, with all our trash and rats, they can form alliances just like juvenile lions, leopards and cheetahs do.