I really really really want a third cat - my partner is not too keen on the idea...... he has written me a long list of tasks to achieve before I can do it! So really a couple of things? How many cats is too many? Have any of you introduced a kitten to 2 adolescent cats and have any advice on how to do it successfully? My two lovely cats (1 boy, 1 girl, both ~18 months- 2 years) get along great even though they aren't siblings and I don't want to mess that up! Sorry if I'm too crazy cat lady!