I had Niniane (the tabby) for about two weeks before someone dumped Boudica, my tortie, in the lobby at the restaurant i worked at. Best i could tell, Nini was about 2-4 weeks older and they immediately became inseperable. I am so fortunate to have two cats that love each other and are so sweet and sociable with absolutely everyone. I'll watch them cycle between intense makeout sessions grooming each other, to zooming after each other acrtthe apartment, to full on WWE Smackdown events throwing each other to the floor.