Caterpillar Pics

I was getting ready to go on a walk with my wife and son in a cemetery in the summer a couple years ago, and as I walked by a shaded patch of flowers, I noticed these huge caterpillars. I'd never seen these type before. They are the larvae of the sphyngid moth...better known as the sphinx moth. Thank God I brought my camera with me. They are beautiful things....creepy, but beautiful.