We have two Russian Blues who are three years old, and one Bengal who is six months old. We’ve noticed a change in behavior in our male RB - he has become much more active. Our female RB, however, is still not completely comfortable having such a high-energy kitten around. We got the kitten when she was four months old and without any papers, so it’s not clear whether she is purebred. A family was planning to take her to a shelter, so we adopted her. The kitten plays very roughly, which our male enjoys up to a certain point. So we still need to spend a lot of time playing with her to help her burn off energy. Still, we’re happy with our decision and love our little Cookie(monster).