After living in our house for a full year our dog has finally figured out who the mail carrier is. We live in a rural area and our mail lady drives a normal SUV with a light on top. My dog just figured out she is delivering mail and now is going crazy barking at her.
My dog dislikes UPS, Fed Ex, mail trucks, etc. and barks like crazy at them. Oh well - at least I had a year of peace on the mail front