Years ago I heard the Star Spangled Banner sung live by the guy who sang it for the Indians. From about 15 feet away it was literally painfully loud. I had no idea a human voice could be that loud.
My first dog, a 10-year old female, starting lifting her leg to mark soon after I got my second dog, a male. I guess it was some kind of sibling rivalry or something.
I occasionally tap a dead-tree book to turn the page. Strangely enough, it never works.