Weve just got a new kitten (female, 4 months) and looking for tips on introducing her to my resident cat (male, 9 years). They are currently separated (we brought her home at the weekend and shes contained to one room at the moment). My male has lived with other cats before (we recently lost a female cat that he was very close to) but he doesnt seem overly impressed with the new kitten so far. I let them meet this morning and there was a fair bit of growling and hissing and I separated them again. Any tips for making the introduction go well?