Looks like Acronicta americana, or the caterpillar of the American Dagger Moth. They can range in colour from pale cream to really bright yellow. The four spiky hairs give it away:
How cool! Though it doesn't look natural at all - if I'd seen something like that I would have supposed it was a bit of a brush or something someone had dropped :-)
no subject
Date: 2012-08-20 02:58 am (UTC)http://en.wikipedia.org/wiki/Acronicta_americana
no subject
Date: 2012-08-20 03:03 am (UTC)no subject
Date: 2012-08-20 03:37 am (UTC)no subject
Date: 2012-08-20 03:38 am (UTC)no subject
Date: 2012-08-20 07:23 pm (UTC)no subject
Date: 2012-08-20 07:46 pm (UTC)no subject
Date: 2012-08-20 10:02 pm (UTC)no subject
Date: 2012-08-20 10:03 pm (UTC)no subject
Date: 2012-08-24 04:36 pm (UTC)