<Li> William Demarest, Charles Leslie "Uncle Charley" O'Casey, Bub's brother (1965--1972) </Li> <Li> Tim Considine, Michael "Mike" Douglas (1960--1965) </Li> <Li> Don Grady, Robert "Robbie" Douglas (1960--1971) </Li> <Li> Stanley Livingston, Richard "Chip" Douglas (1960--1972) </Li>

What is the name of the dog on my three sons