I was just searching for something on the net, and ran across this funny little blog by accident. The first paragraph cracked me up, as I'm sure it describes exactly what Charlie thinks when he sees me grab his leash.
The blog is called "Make your pup happy and explore dog-friendly spots" written by Carla Kucinski
"Make your pup happy and explore dog-friendly spots " : Stories : goTriad.com
Worth a quick read if you need a chuckle.