My cat Mitzy was at it again last night, looking under my dresser for fallen ear plugs.  She LOVES to chew on anything that's soft rubber, including my ipod headphones.  She's chewed through two sets of those already.  Needless to say, I keep them in a drawer now.  I even had a dream the other night that she chewed through my latest pair of headphones.  It seemed so real that I woke up mad!  I can't tell how relieved I was to check on my headphones and see that they were indeed fully intact.  Whew!