B flat curiosities

My commute to work is usually eased by listening to NPR's Morning Edition; the story that caught my ear this morning was about musical notes. Did you know that alligators bellow when they hear a specific musical note, a B flat, one octave below middle C? I wonder why.

The why doesn't really matter though; what matters is that this story started my day on a cheerful note!

Interesting reading and listening: Have you heard about B flat?, broadcast on Friday, February 16, 2007.