Caterpillar Identification

Hello all,

I found three of these caterpillars on a Catalpa (Indian Cigar?) tree in my back yard. They seem to be quite fond of the leaves. I know this isn't the best picture, but was wondering if anybody could identify the species for me. Their approximate length was about 2" - 2.5".

Thanks!

Tim

Definetly a sphinx moth catapillar. Probably Catalpa Sphinx moth.