I recently got a foster cat (recently as in yesterday). Due to space constraints, I could not keep my 2 cats seperated from her. She is spayed, shots UTD, and healthy so no health worries. My 2 are fine with her. They are just kinda curious- no aggressive behavior AT ALL! I was suprised because I figured that I might have issues because I couldn't keep them seperated. Aya (the foster kitty) hisses and swats at them. Even with that, Petunia just kind of looked at her like she was an idiot. Pepper didn't seem to appreciate it so much, but didn't really do much other that pin his ears back and growl a little. Is it just going to take time or is there anything that I can do to facilitate the intros?