To Willy's people: We had an all-black (with white markings) cat named Willy between the years 1972-1987. His story was so similar to your own. Our Willy would come out of his usually mild-mannered state into attack-cat mode if his territory was threatened. We too in his later years had hassock steps piled in front of any perch he needed to reach. You've renewed our memories through sharing your experiences. Our thanks for every bit of that wonderful and costly care your own Willy is receiving -- costly in the sense of the time-consuming patience required also. Willy and your other cats are very very fortunate.