You thought dogs were Color Blind?
Ok this was a new one for me. I always thought that dogs were color blind. I don't know where I got that idea from, but it stuck. Looks like I was wrong all these years. Research conducted by Neitz J, Geist T, and Jacobs G H shows that while dogs see less color than we do, they are far from being unable to distinguish colors at all.
Apparently, dogs have a form of color blindness called deuteranopia which translates into red and green color blindness. So while they are able to clearly distinguish between say blue and yellow, they have trouble telling red from green.
Apparently, this is a bit like seeing the world at night. Dogs were not meant to rely on vision alone for their survival. They are meant to use a totality of their senses including smell and hearning, and that is why they haven't developed the detail and sharp eyesight that humans have. It's more important for them to detect motion.
Dog obstacle courses have blue and yellow themes for this reason. Nice to know that my canine companion doesn't see me as black and white!