I can see his pic now too! Handsome..but being a defensive little butt head huh? Kirby, and my R.B Willy, and Thumbelina were the most passive cats! Kirby is a radial aplasia case like yours, but stays in my bedroom and is happy in the room. Maybe Surya is a bit overwhelmed by too much area, and having to deal with others. Try keeping him in one room..it won't kill him. My RB Willy (the love of my life ) preferred to stay in my bedroom. He felt safe and secure in a smaller zone. He was petrified trying to survive with all the others!