My first experience with DPNs - I was making a sock and had the usual 'feeling like I was knitting with all thumbs' experience. I left it on the couch while we went to dinner. Big mistake. My dog at the time figured they were just giant tooth picks and proceeded to chew one of them into a million pieces. It was of course one of the needles that was IN the sock. I don't know how she did it, but she avoided the sock and just got the needle.
Lesson learned..don't leave your knitting on the couch when you leave the room. Also don't leave your sandwich. She grabbed that one day, too.