I'm so sorry to read of Opus' passing. He sure was a gorgeous boy and he didn't look his age either. Must been the Maine Coon breed b/c they're so hardy. No matter how long we have our furkids w/us, it's never long enough, is it? Try to take comfort in knowing that you did the last act of kindness for Opus and he loves you all the more for it and is waiting for the day when you will be reunited. RIP, sweet Opus and peace to your human.