They'll be best buds in no time and you'll be subjected to kitteh porn like I am. I got Chui when Brandi was 3. She was upset (especially since Chui became allies with Onyx the pit/lab) but I knew she was lonely and needed a kitty friend (I also wanted a kitty LOL). But they didn't fight nor was there any hissing (she would swat his high-energy self sometimes--she still does this LOL), but now, they are inseparable. Like sniff and lick each other to death and cuddle till morning inseparable. They play with each other all the time and it brings me great joy watching them. I LOVE IT!!!!