[Los Feliz Slim]

When I introduced a second cat into my house I kept them totally separate for a while and slowly, slowly, introduced them to each other. One is much older than the other, they're both female. The older one HATED the younger one for a long time, and the best she ever does is tolerate the younger one. Once a day or so the older one just beats the living [censored] out of the younger one, just for kicks.

I do think it's kind of nice for them to have each other when we're not in the house, but I think the only way you can know they'll be friends is if they're siblings.