Wildlife Spotting

does it have a horn of anykind? if so perhaps it's a Laurel Sphinx caterpillar (Sphinx kalmiae ) If this is what it is, I think it's a rare sighting Could also be a white dotted prominent caterpillar (Nadata gibbosa)

I'm not sure, but it looks like a sphingidae caterpillar. This is one example of it http://en.wikipedia.org/wiki/Manduca_sexta.