I now have three cats and it seems that two react differently and I am about to find out how the third cat reacts to other cats. My first two, Graemer and Miley are so different when it comes to inter-reactions. Graemer is loving, curious and takes over the new comer and Miley is standoffish, jealous and uptight with new comers. Go figure. I have yet to see what Gabe is like with new pets. I am going to housesit someone else's cat in two weeks, so I will have more information then......