Dogs Are Not Colorblind, Plus More Misconceptions About Canine Vision and How They See Differently than Humans | 9/19/2017 | Saryn Chorney
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Ah, to know what goes on inside those puppy dog eyes. Aside from “food!” “ball!” “squirrel!” and “outside!”, people like to think their pets are contemplating life, maybe making minor judgments about us.

Whether they’re watching TV or surveying the scenery while on a walk, it’s hard to put ourselves inside their shoes paws and really see what they see. But up until recently, humans thought they knew this one thing about canine vision: that dogs see life in black and white.

Shades - Gray - Misconception - Pups - Colorblind

Wrong. Turns out they don’t even see in shades of gray. The misconception that pups are colorblind is actually a major dog myth. Alexandra Horowitz, the author of the 2016 book Being a Dog, recently explained to Business Insider that even though it’s difficult to know exactly which colors our pups see, the cones and rods which work as light receptors inside their eyes (as well as our own) are likely able to detect some colors. While humans can best see three colors of the spectrum — red, green and blue — experts believe dogs, who have less cones than us, may have the most sensitivity to two colors — yellow and blue. Horowitz says this vision field probably compares to what humans see at dusk.

However, dogs have more rods in their eyes than humans do, plus another layer of eye tissue, which means their night vision is better than ours. And while...
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