We have now been together for 7 weeks and I am thrilled with how well they get on. Thrilled and slightly alarmed that the kitten is already nearly the same size as the 2.5 year old cat lol. Leroy the kitten will walk up to Penny and shove his head under her chin with his ears back ready for grooming, all the while letting out a thunderous purr. I am loving it. It sounds silly but honestly I feel like my little family is finally complete!