What's That Bug

Just an update for some of you. I did some searching on a fabulous site, What's That Bug, and found the identity of our little friend below. Turns out, he/she was a Tiger Swallowtail Catepillar, in the life stage just before it's time to pupate! When it comes out of the cocoon, it will look like this...

Mystery solved! I still don't get the whole rocking thing it was doing though...

Until,
D