Insect and Spider Identification: CLOSED: CATERPILLAR ID HELP, 1 by gardenfinds

gardenfinds wrote:
I found this caterpillar outside today, not on a plant, but sitting on a sponge I use to clean out the chicken's waterer! It's main color is brown with light tan "stripes". It is banded, smooth skinned with dark brown/tanned spots and a brown "horn." When open, it measures around 2" long. I did some searching on the internet and from what I found it might be a sphinx moth but I'd like to know for sure for my records. Thanks!