Hickory Horned Devil - A Regal Moth in the Making
The hickory horned devil is the largest caterpillar that occurs in East Texas and looks like a small dragon. For some people who come across it unexpectedly, it can be very intimidating. In spite of its scary appearance, the hickory horned devil is completely harmless.
The link address is: http://txforestservice.tamu.edu/forestry_education/insects_and_diseases/insects/hickory_horned_devil.html