My husband built a catio outside of one of our living room windows and our boy, Paddy, loved it. He's a feisty orange tabby too. We now live in a motorhome and travel, but he has a popup catio for hanging outside. He gets mad when I don't want to set it up when we're only staying one night somewhere. I'm so happy for you all and Buddy. Have your husband check out homemade catios on Pinterest. You will get some fabulous ideas. All of your fur babies will enjoy it. :)