This thread is interesting. It shows how widespread a general lack of understanding many have over how a dog works and operates. That a blaze orange dummy is that color for the handler would be one of the most basic things I would expect ANY basic dog handler to know. All of the examples given of things dogs can see have been moving. Anyone who has recalled a dog while being in a group of people having trouble identifying which is their handler on return unless there is a wind from behind the handler. Most handlers in this situation will have to extend their arms and repeat the recall just so the dog gets a recognition.
The better you understand these aspects of your dog, the better you will handle your dog. The more you try and believe the dog thinks, acts, sees, hears and smells like you do you are putting up impediments you don;t need.
Bookmarks