Difference between Human and Canine Vision

Humans and canines have very different vision, but it probably isn’t different in the way that you imagine it to be. After reading this, you’ll think differently about the way your dog sees the world when he or she heads out through the dog door. You may even better understand your pet’s behaviour.

Myth Busted
There is a myth that dogs only see in black and white. While they do only see in a two-color spectrum, it isn’t black and white. Humans see on a three-color spectrum that includes blue, red, and green shades. Dogs see on a blue/green spectrum. For them, that means that something pink may look like a different shade of blue or green.

Timing Is Everything
Humans and dogs have a very similar eye structure, including the existence of cones and rods. The difference is that humans have more cones, while dogs have more rods. Since cones help with daytime vision, it stands to reason that your dog has better night vision than you do, and they also see a wider field.

When something runs through your yard at night, and your dog heads out the pet door and immediately sees something you can’t see, rest assured that it could be your dog’s superior night vision or wider panoramic view. However, when you don’t understand why he or she is getting so worked up over a bottle that blew in the yard, know that what you can see clearly from 75 ft. away, your dog can only see clearly at 20 ft. away.