Yikes! I wrote in a couple of days ago...two new adult cats, one hissing and growling incessantly which has caused the other (less abrasive) cat to become a "bully"...he is trying to guard resources, intervenes when the other cat is getting attention (which only causes more hissing and growling because she wants him nowhere near her), and now we have a major problem. It seems that Ed (the quieter, more discreet cat) is trying to go after Tootsie (aka Hissy) when we aren't looking. The result (2 days in a row) has been an all out brawl leading to Tootsie peeing all over herself and the floor. She was recently vetted so I don't think it's a medical issue, and it seems to be directly related to Ed and her anxiety. She doesn't act like herself (loving and happy) at all!! Long story short, I've tried everything, and I mean EVERYTHING! I've researched and done everything proper to try to introduce and socialize them, but I think all of Tootsie's hissing and growling (anxiety from being an only cat for so long) just got to Ed, and he now wants to establish dominance...Ed is the cat that actually got along well with other cats at the shelter! I fear this will not work! It's been 3 weeks...there was some progress, then as Tootsie started to become more settled, Ed started this sneaky business! I don't know who should be going into the "safe room" we've set up, who should be sleeping where in the house (so as NOT to cause a problem), who should get run of the house, or if it would be best to rehome. Suggestions, anyone, please?!? I love them both so much already!! What am I going to do?